Material for the
Explanation Meeting on
the Business Creation Sector

April 16, 2024
Business Creation Sector
Mitsui Mining & Smelting Co., Ltd.

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Today’s
AgendaParticipants and Materials

Participants

Name

Position•

YASUDA Kiyotaka, Ph.D.

Senior Executive Officer and Senior General Manager of Business
Creation Sector•

YAMAMOTO Takuya

Executive Officer and General Manager of Business Planning
Department, Business Creation Sector•

NAKAHARA Yunosuke, Ph.D.

Director of the R&D Center, Business Creation Sector•

SUZUOKA Kenji, Ph.D.

General Manager, SE Business Promotion Unit•

FUJII Joji

General Manager, HRDP Business Promotion Unit•

ANAI Kei

General Manager, AST Business Promotion Unit

Topic

Document pages•

Overview of the Business Creation Sector

PP. 2 to 6•

[A-SOLiD®], a Solid Electrolyte Business for All-Solid-State
Batteries

PP. 7 to 13•[HRDP®] Specialty Carrier Business for Next Generation
Semiconductor Packaging

PP. 14 to 17•

Cu Sinter Paste BusinessPP. 18 to 19•

CO2 Capture and Reuse Business (R&D Center Case Studies)PP. 20 to 23•

Owned Media “M-Lab” (Web Marketing & Open Innovation)

P. 24

•

Copyrights and Disclaimer

P. 25

Materials

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1

Overview of theBusiness Creation
SectorPositioning of the Business Creation Sector
Company
purposeWe promote the well-being of the world through a spirit of exploration and diverse technologies.

SectormissionTo be a “source” of the well-being of the world. Three sentiments behind our mission: (1) Our company is a source of resolving issues to make theearth smile ≈ a starting point; (2) our sector is a source of company-wide businesses; and (3) the foundation of our competitive advantage is theintelligence of the source (material).
This is a sector of “Exploration” within Ambidexterity*, with priority allocation of management resources as a “Value Cultivation” sector within
business portfolios.

Positioning of the Business Creation Sector
Ambidexterity
Exploration
Life science

Environment/
energyBusiness
Creation
SectorEnvironment/
resource
energyMobility

Mobility Sector

Metal Sector

Electronics

Circular economy

Next-generationelectronics

Value Cultivation

Engineered
Materials Sector

Attractive markets

Exploitation

Business Portfolio Management

Corporate Planning & Control Sector Portfolio reconfiguration/synergynurturing functions

Business
Creation Sector

Value Expansion
Businesses
under focus

New businesses
sector
* Utilization of M&A

Business
Reconstruction
OfficeValue Transformation

Mobility
Sector●Copper foil

●Engineered powders

Engineered
Materials
Sector

Metal Sector
Value Reinforcement/Optimization

Business Values* A concept of ongoing innovation and survival by implementing both Exploitation, the continuous
pursuit of existing businesses, and Exploration, the development of new businesses.

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2

Overview of theBusiness Creation
SectorHistory and Organization of the Business Creation Sector
In 2020, the Engineered Materials Research & Development Center and the New Business Planning Office under the Engineered Materials Sector werespun off into a new independent sector.
This new organization is autonomous and self-propelled, and handles everything from research and development to commercialization, having the internal
strategic support functions necessary for business creation.

History of the Business Creation Sector

Value chain of the Business Creation Sector

Copper Foil Division

ResearchEngineered Powders Division
・・・

Development

Commercialization

Strategic support functions (DX, mass production technology, quality assurance,
intellectual property, accounting, human resources, etc.)

Company-wide assets

Engineered Materials Research& Development Center
New Business Planning Office
CVC

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2020
Established as a new
independent sector.

External co-creation partners

Provision of value

Engineered Materials Sector

Organization Features(1) An autonomous, self-propelled organization- Handling of everything from R&D to commercialization- With strategic support functions for DX, mass production technology, quality
assurance, IP, etc.
(2) A “market co-creation-type” business entity- Creation of new markets with external co-creation partners*
The sector operates CVC for organic links with external assets.
* Customers, universities, research institutions, suppliers, startups, equipment andcomplementary goods manufacturers

3

Overview of theBusiness Creation
SectorVision, Value, and Business Domain of the Business Creation Sector
We create markets one after another by leveraging our strengths and external forces.
Our business domain for 2030 are “Environment/Energy,” “Next-generation Electronics,” and “Life Science.”
VisionDriverlessvehiclesAI technologies

An exciting co-creation groupthat explores the future with material
intelligence

Security

Circular economy

Space industry

Value

Excitement (Challenges)
Vitality (Work)
Wholeheartedly (Fun)

Environment/Energy

Environment/
EnergyElectronics

Agriculture

Resources

Mobility

Next-generationelectronics

Ourstrengths

Life science

External
forcesCustomers
Suppliers
Startups
Universities,
research institutions,etc.

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Business Domain for
2030

Robot technologies

Life science

The world in 2050

4

Overview of theBusiness Creation
SectorYear 2030 Goals and Major Policies of the Business Creation Sector
We will actively invest management resources toward the goal of contributing to profits of 10 billion yen* or more in 2030 from our new businessthemes.

Major Policies of the Business Creation Sector

Year 2030 Goals

Policies

Management Resources(1) Reinforcement of our R&D strengths- Increase the number of R&D personnel.
- Promote DX application.
- Promote external collaboration.

Expenses (hundred million yen)
300
Environment/Energy

CO2related
themesSE(2) Reinforcement of commercialization promotion- Increase the number of personnel forcommercialization promotion.
- Implement strategic investments.

0(3) Enhancement of strategic support functions- Reinforce strategic support functions for
production process development, IP,
quality assurance, etc.

100(4) Reinforcement of sector competitiveness- Promote the spread of MVV.
- Enhance human capital.
・ Boost engagement.
・ Nurture global human resources, etc.

Profit contribution > 10 billion yen

2016 Plan

2019 Plan

2022 Plan

Investments (hundred million yen)
Next-generationelectronics
02016 Plan

2019 Plan

2022 PlanHRDP

Cu paste

Others

Personnel
500

Portfolio reviews as needed0
2016

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2019

2022

2025

R&D
themes

R&D
themes* The levels of R&D activities are deliberated on a case-by-case basis
within the framework of company-wide management asset allocation.

5

Overview of theBusiness Creation
SectorConcrete Case Studies (Cases Studies in the Environmental/Energy Sector)
To realize the well-being of the world, we are promoting a vast number of themes based on keywords such as a “carbon neutral society,”“recycling-oriented society,” and “society in harmony with nature.”
Blue: Themes to be
introduced today

CommercializationⓇ

HRDP
Special carrier for
next generation
semiconductors

Contribute to a carbon neutral society- Technologies that facilitate the transition to EVs and FCVs
- Technologies that support a hydrogen society

Solid electrolyte
A-SOLiDⓇ

Commercialization- Technologies that contribute to the reduction of GHG emissions

Underdevelopment

Contribute to circular economy
Cu sinter paste
for power
semiconductors- Technologies that contribute to energy and resource conservation- Materials that support material recycling and resource circulation

Collaborating

Collaborating

Methanol generationfrom CO2
Contribute to harmonious coexistence
Downsizing and energyof nature and humans- Technologies that support the bioeconomy

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conservation for chemical
processing

Collaborating

Commercialization of
nuclear fusion technology

Industrial structuretransformation driven by
photosynthesis-based
technology
6

Business
Explanation:
A-SOLiD®

Project Overview
Year 2030
visionContribute to realizing a decarbonized society through all-solid-state batteries and become the leading company for solid
electrolytes.
Market Scale in the 2030s

Next-generation batteries: All-solid-state batteries
EV applications• Commercialization of initial models to begin from thelate 2020s• Potential widespread adoption and rapid market
growth by the 2030s

Safer and more comfortableelectric vehicles (EVs)
Expansion of potential battery
uses by increasing
environmental adaptability(high/low temperatures, etc.)

Photo provided by Maxell,
Ltd.

Photo provided by LIBTEC

A-SOLiD®, a solid electrolyte•

A powder sulfide solid electrolyte
necessary for all-solid-state batteries•

Argyrodite-type structure with high ion
conductivity and durability, and exhibits
excellent properties for use in batteries

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Market scale

Value we proposition

Target markets

Product Overview

Industrial/special applications• Commercialization of all-solid-state batteries for F/A
by Maxell, Ltd.
2024 will be the first year of all-solid-state battery
commercialization.
• Steady formulation of our own market for all-solidstate batteries

Widespread EVs

Initial EVs(high-end)
Industrial/special applications

2025

2030

2035

2040
7

Business
Explanation:
A-SOLiD®

Features and Expected Value of All-solid-state BatteriesCompared to conventional liquid LiBs, all-solid-state LiBs offer a “wide temperature range for use” and “high safety.”
They are expected to provide value in terms of smaller sizes, quicker charging, and higher energy density.

Comparison of LiB Features
Form

Working Temperature Range

Battery Design

Cathode⚫ More than 70% is organic matter➢ Limited working temperature Cathoderange➢ Risks of leakage/combustion-20C

Condenser

CathodeSeparator
Solid electrolyte

Anode

Anode

Refrigerant piping

Provision ofvalue

All-solid-state

Liquid type

Composition-40C・ Smaller cooling space
・ Simplified BMS

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Cathodes: LMO, NCM,
LFP

Anodes: Graphite,
LTO⚫ No use of electrolyte solutions(Composed of only inorganic matter)➢ Wider working temperature range➢ Lower risks of leakage/combustion➢ Rapid charging becomes possible

High level of safety

60C

Smaller and more
lightweight

150C

Wider working temperature
range and improved heat
resistance

Rapid charging
becomes possible

Potential of new materials
Cathodes: High-voltage cathodes
5V-class LNMO, etc.
Anodes: High-capacity anodes
Li metal, Si-types, etc.

High energy
density8

Business
Explanation:
A-SOLiD®

All-solid-state Battery Market Trends
We can expect the market to expand, as there are already practical applications that make the most of the features of all-solid-statebatteries. Companies have been actively making efforts to achieve EV commercialization in the latter half of the 2020s.
Market forecast per application for all-solid-state batteries
GeneralAnnual demand (MWh)General, etc.

Compound annual
growth rate (CAGR):
341%

EVs

EVs

Commercialization of highcapacity ceramic packaged
all-solid-state batteries

Development of cylindricalall-solid-state batteries foruse in main power supplies

News release (7/25/2022)

News release (10/26/2023)

Striving to create an all- Announced 44 billion yen
solid-state battery-powered in investments in 2024
vehicle in 2027 to 2028

Announced prototype
manufacturing facilities

R&D for EVs
News release (6/13/2023)(Year)
Data source: Solid-State Battery 2021 | Report | www.yole.fr

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Space

Business briefing (4/12/2022) News release (4/8/2022)

Adopted by a semiconductor
equipment manufacturer

Discharge/charge functions
confirmed in space

News release (2/27/2024)

News release (8/5/2022)
9

Business
Explanation:
A-SOLiD®

A-SOLiD® Features
A-SOLiD® features high ion conductivity (2 to 10 mS/cm) within processes feasible for mass production.
It has both the characteristics of a powder and ion conductivity and can be used widely as a battery material.
Features of A-SOLiD® (Argyrodite-type Solid Electrolyte)
Crystalline Structure of an Argyrodite-type Sulfide Solid Electrolyte
S2-/(halogen)-(4a)S2-/(halogen)-(4c)Features・ Achievement of high Li ion conductivity throughoptimized composition→ Optimization of composition to incorporate the lattice
space necessary for high diffusion of Li ions・ Realization of both powder characteristics and ion
conductivity→ Realization of both particle size control and ion
conductivity by employing our powder control
technology

Li+(48h)・ Crystalline material with excellent mass production
properties→ Management of crystallization parameters andquantification of control factors
PS43-

・ Possession of many patents related to argyrodite

Use of VESTA: K. Momma and F. Izumi, J. Appl. Crystallogr., 44, 1272–1276 (2011).

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10

Business
Explanation:
A-SOLiD®

A-SOLiD® Features
A-SOLiD® (sulfide solid electrolyte), which our company has developed, is a material that features high ion conductivity and particle size
control compared to other sulfide solid electrolytes, and that has excellent mass production potential.
◎Particularly excellent 〇Good △Has issues

Comparison of Various Sulfide Solid Electrolytes
Massproduction
feasibility

H2S
generation

◎

◎

△

△

〇

◎

△

△

〇

△

△

◎

△

△

△

Name

Structure:
Typical composition

Ion conductivity

Voltagestability

A-SOLiD®

CrystalLi7-xPS6-xHax

◎

〇

〇

Argyrodite

Crystal
Li6PS5Cl

〇

〇

LGPS

Crystal
Li10GeP2S12◎△Glass ceramic

Glass ceramic
LPS+Ha〇(Ge, Si)〇

Moldability
Atomization(hardness)

Mechanochemical

Created by Mitsui Mining & Smelting Co., Ltd. based on various data.
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11

Business
Explanation:
A-SOLiD®

Initiatives to Promote SE Projects
In November 2021, we started supply from test facilities for mass production. We decided to increase production capacities in February
2023 and again in January 2024.
A-SOLiD® will contribute to the realization and widespread adoption of all-solid-state batteries.
Decision to introduce
mass production testing
facilities

Start of supply from A-SOLiD ®
mass production testing
facilities（11/24/2016 News release）（12/4/2019 News release）（11/11/2021 News release）（2/7/2023 News release）

・ Developed an argyrodite-type
sulfide solid electrolyte withexcellent mass production
capabilities.

・ Started verification towards
commercialization of allsolid-state batteries withfacilities that have anannual production capacityof several dozens of tons.

・ Developed an argyrodite-type
sulfide solid electrolyte withexcellent mass production
capabilities.

・ Decided to increase theproduction capacity forargyrodite-type sulfide solid
electrolyte.

Development of a sulfide
solid electrolyte

Production capacity
increased for mass
production facilities

Decision to invest in
expanding secondary
production capabilities（1/26/2024 News release）

・ Decided to invest to triple
the current production
capacity.

A-SOLiD® mass-production testing facility building

2016

2019

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2021

2023

2024
12

Business
Explanation:
A-SOLiD®

Initiatives toward 2030

Started to supply samples.

EV uses
Accelerate
R&D withcustomers.

2030

Commercialization

Industrial
uses

Commercialization

2024
With the acceleration in development towards
commercialization at companies, there has been arapid increase in the number of inquiries.
➡ We are deliberating additional investments toincrease production.

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・ Development is accelerating at companies to achievecommercialization in the late 2020s, and the number ofinquiries has been increasing rapidly.

・ Reinforce mass production testing facilities to address
customer demand.
・ Co-create an EV market by providing high-quality solid
electrolytes.
・ Develop processes for HVM and make efforts to lower
costs.
・ Assess market trends to invest at optimal timings.

Expandedapplications

Decided to triple production capacity in response to soaring demand for samples from companies inJapan and overseas. (January 26, 2024)

A-SOLiDTM mass-production
testing facility building(Ageo City, Saitama Prefecture)

Environment

Decided to introduce a massproduction testing facility.

2025

EV uses

HVM*2

Measures

Developed solid
electrolytes.

2020

SVM*1

Future Key Policies

Industrial uses
Environment

Preparations forcommercialization

R&D

2015

*1 Small Volume Manufacturing*2 High Volume Manufacturing

・ Maxell’s high-temperature range and long-life batteries
started receiving orders from Nikon in FY2024, so
commercialization of all-solid-state batteries starts thisyear.

Measures

Roadmap・ Ensure delivery of solid electrolytes of consistent quality.
・ Expand the product lineup according to customer
requirements.
・ Collaborate with partners who develop materials thatcater to customer/market needs to expand applications
and markets.

13

Business
Explanation:
HRDP®

Project Overview
Year 2030
visionAchieve a de facto standard for next-generation semiconductor packaging device platforms
Product Overview

Market Scale in the 2030s

Value we proposition

Specialty carrier for the next-generation semiconductor PKG

10 trillion
yenMarket scale

Target markets

The advanced packaging that HRDP® aims for is advanced fan-out and advanced flip-chip.

Contribute to the advancement oftechnologies for high-speed
communication, high-speed processing,self-driving, medical procedures, etc.

The advanced packaging
market scale that HRDP® aims
for is forecast to expand to 9.4
trillion yen by 2030.

Advanced fan-out(Chiplet, chip-first, chip-middle, chip-last)

Advanced flip-chip

Reduce power consumption and improveenergy efficiency.

(2.1D packaging, bridge)

Image of a next-generation
semiconductor package

2022

2026

2030

Created by Mitsui Mining & Smelting Co., Ltd. based on information from Advanced Packaging 2023, Yole.

Status of Customer* HRDP® Assessments and Production Application Plans

HRDP®
• Specialty carrier for highproduction efficiency of nextgeneration semiconductor
Functional
packaginglayer
thickness: • Contribution to customers’
0.65 μm
process yield maximization in
next-generation
semiconductor package
manufacturing

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15 major semiconductor supply chain companies have entered the mass production assessment phase,and one of these companies is in the final stages before mass production.
Customer segment
2024
2025
2026
2027・・・

Early adopters 3 companies
Early majority 12 companies
Late majority 9 companies

HVM*2

SVM*1

Innovators 2 companies
Development

SVM

Development
Development

HVM
SVM

HVM
SVM

HVM

*1 Semiconductor packaging supply chain; IDM, fabless companies, packaging manufacturers,
and board manufacturers
Created on information current as*2 Small Volume Manufacturingof March 2023.
*3 High Volume Manufacturing

14

Business
Explanation:
HRDP®

HRDP ® Targeting
Merits of Carrier Application
Conventional Structure

Application Areas for HRDP®

Next-generation Package Structure

Carrier (HRDP®)

Development of devices with specifications enabled byapplying HRDP®

Ultra-high-density RDL
including smaller thanLS2/2um circuitry design.

Higher quality
requirements(foreign matter,scratches)

Application areas for HRDP®
Multi chip
High-end market
2.5D/3D,
heterogeneous,
chiplets

Improved productivity byminimizing warpage of
packaging device workin-progress.

Ex) AI, HPC,
Networking

Thick (device
thickness)

Mid-range market
Diverse communication devices
Realization of Ultra-thin devices

FC-CSP/FC-BGA

General-purpose market
Diverse IoT devices

Carrier (HRDP®)

Applications withcomparatively fewer IO
counts on single chips

Single chip

Package substrate
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・Simplification of highdensity chip assembly process
・ Realization of high yield manufacturing
for the 2.5D/3D chip-lets structures

1/1

2/2

5/5

10/10

15/15

20/20

Interposer circuit width line/space (µm）
15

Business
Explanation:
HRDP®

Initiatives toward 2030

2018

SVM*1

2020

Future Key Policies

HVM*2

2025

Developed HRDP🄬.
Established mass production technologies with
GEOMATEC Co., Ltd.

2030
Expanded
adoption

Environment

Preparations forcommercialization

R&D*1 Small Volume Manufacturing*2 High Volume Manufacturing

・ Increase in the number of inquiries for nextgeneration semiconductor packaging geared
toward 5G/6G, AI, and high-performancecomputing・ Increase in the number of development projects
from mainstream customers due to production
efficiency (panelization and cycle time reduction)with HRDP® application

Measures

Roadmap・ Reinforcement of marketing activities to endmanufacturers who are utilizing DOE facilities
・ Expansion of the product lineup according tocustomer requirements
・ Second line to start operation as planned in 2025

Started mass production. (Domestic composite chip module
manufacturers)
Started mass production. (IC-chip packaging device
manufacturers overseas)
Started operation of theDOE*3 facility.
Expand production capacity (install a second line).
Enhance the DOE facility.

Automatic release mechanism
for HRDPⓇ (part of the DOE
facility)*3 DOE: Design of Experiments. This methodology is applied to build adevelopment facility for identifying and resolving issues inadvance by verifying customer designs.

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16

Business
Explanation:
HRDP®

Initiatives toward 2030
At present, the first line within the GEOMATEC Co., Ltd. Ako Factory has been conducting mass production, and the second line is planned
to start operation in 2025.*1
We will make capital investments informed by market expansion towards the year 2030.
Manufacturing Process

Printing

Deposition of functional layer*2

Clean transport

Product inspection
Packaging/shipping

Glass cleaning

HRDP® production capacity2023
40,000 m2/year
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2024

2025 to 2027

2028 onward

110,000 m2/year

170,000 m2/year(Partial automation of the firstline)(Start of operation of the second
line*1)

Securing of the required
production capacity*1 May 15, 2023, news release*2 Excerpted from the GEOMATEC Co., Ltd. website.

17

Business
Explanation:
Cu Paste

Project Overview
Year 2030
visionReach the No. 1 position and performance as a copper bonding material manufacturer to contribute to improving the global
environment through widespread adaptation of power electronics.

Target markets

Product Overview
Next-generation power
semiconductors
Promote the spread of power
semiconductors as key
devices for decarbonizationand energy conservation.

・ EVs/PHEVs
・ Renewable energy (wind/solar power)・ Industrial equipment (base stations, etc.) andmore

Market Scale in the 2030s• The sinter materials market is also expected to see sustainablegrowth due to the rapid popularization of EVs and wider
implementation of SiC power modules.
• Adoption of sinter materials, including die-attach and substrateattach*2, will continue to grow to a market scale of 50 billion yen in
2030, and will expand thereafter as well.
(Billion yen)

Market scale*3 of sinter materials

100

Value proposition

80

Cu sinter*1 paste
for power
semiconductors

Characteristics

60• Bonding material with high heat dissipation and high heat
resistance, which are essential properties for nextgeneration power devices (SiC/GaN)40• A performance level equivalent to that of Ag sinter paste,
which is taking the lead in the market
Competitive advantage• Integrated in-house design/development/production fromcopper particles to paste to achieve a cost advantage
over competitors (Cu/Ag sinter materials)

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20
0
2024

2030

2035

*1 Technology that creates metal bonds at a junction interface through heatand pressure of materials to be bonded and the paste*2 E.g., bonding between a semiconductor package and a heat sink
*3 Created by Mitsui Mining & Smelting Co., Ltd. based on the “Current Statusand Future Prospects of Next-generation Power Device & PowerElectronics-related Equipment Market for 2024” by FUJI KEIZAI CO., LTD.

18

Business
Explanation:
Cu Paste

Initiatives toward 2030
*1 Small Volume Manufacturing*2 High Volume Manufacturing

Preparations forcommercialization

R&D
2015

2020

SVM*1
2025

HVM*2
2030

Markets by area
Accelerate
R&D with customers.

Developed Cu sinter paste.

Future Key Policies

Expandadoption/applications.

EuropeandAmerica

Environment

Roadmap

Accelerate
ExpandAsia
R&D with customers. adoption/applications.

Started operations of DOE*3 facilities/small-・ Full-scale adoption of SiC is ongoing focusedon EVs and PHEVs, and solder is being
replaced with Ag sinter to improve
performance.
.・ Meanwhile, customers have strong needs toreduce costs, and less expensive Cu paste is
expected to reduce costs in the back-end
process*4 for widespread adoption of SiC
power modules.

scale mass production facilities.

Measures

DOE functions

Equipment for process
testing and evaluation

Sinteringequipment formass production

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・ Aim to replace Ag sinter by providing products
according to application*5 at competitive
prices, by taking advantage of our strength inintegrated internal development from copper
particles to paste and in-house DOE functions.

*3 DOE: Design of Experiments. This methodology is applied to build adevelopment facility for identifying and resolving issues in advance by verifying
customer designs.
*4 Back-end process: Processes for bonding diced semiconductor chips andsubstrates, wiring, and resin encapsulation to finish products*5 Example applications: Clip attach (bonding between the top side of asemiconductor chip and a lead frame)
Substrate attach (bonding between a semiconductor package and a heat sink)19

R&D
CN-related
Initiatives

Key Technologies for Decarbonization
We have set adsorption separation and catalysts as key technologies for creating new businesses related to decarbonization at ourcompany.
We encourage external collaboration to refine technologies and promote initiatives focused on CO2 capture and conversion as well as
related fields.

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20

R&D
CN-related
Initiatives

Key Materials for Decarbonization
With distinctive materials (zeolite, silica, MOF/porous materials) and related technologies that can be applied as key elementsin the era of decarbonization, we aim to create new value with adsorption/separation and catalytic functions.

5000

MOF
Features pore sizes ranging from 0.1 nm toseveral nm and has an extremely large
surface area, making it ideal for gas
adsorption and storage.

Specific surface area (m2/g)

4500
4000

3500
3000
2500
2000

ZeoliteFeatures a pore size of approximately
0.1 nm, making it ideal for catalysts
and adsorbent materials.

1500
1000
500

Silica monolith
Features two types of pores with sizes ranging fromseveral nm and from several μm, making it ideal for
adsorbent and support materials.

0
0.1

1

10

100

1000

Pore diameter (Å)
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MOF: Metal Organic Framework

21

R&D
CN-related
Initiatives

Examples of CO2 Capture Technology Initiatives

Panels/actual
exhibits

Under
development

Collaboration
between sectors

By utilizing newly developed CO2 capture materials, we are making efforts to realize new businesses that widely contribute to thecompany as well as decarbonization.
Differential Hypothesis

CO2 Capture System Proposal

Development of CO2 capture materials with a fast cycle timeand low capture energy by utilizing our material technologies

Rapid extraction of issues within CO2 capture materials and thesystem, along with acceleration of practical applications by using ourfactory for demonstrations

Unit capture energy

Chemicalabsorption
methodAcceleration of adsorption/
desorption cycles with a morecompact equipment size

Our solid
adsorption
methodOther companies’
solid adsorption
methods

Adsorption/desorption cycle time
(Per unit of CO2/adsorbent material)

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Exhaust gas
Factory

CO2 adsorbent
material(Developed by us)

Atmosphere

Adsorption

Exhaust gas
Desorption (after CO2 separation)

Capture & separation system

Captured CO2

Storage & utilization
methods
Under deliberation(including collaboration
with other companies)

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R&D
CN-related
Initiatives

Examples of CO2 Utilization Technology Initiatives

Under
development

Open innovation withstartups

We are accelerating joint development with eSep to provide better value for membrane reactors, which combine separation membranes
and catalysts.
Methanol Generation from CO2 with a Membrane Reactor

CO2-methanol synthesis reaction

Laboratory Scale Test Results
We confirmed the possibility of exceeding the theoretical yield withmembrane separation.*

Membrane reactor mechanism

Catalyst layer

CH3OH yield (%)

Theoretical yield of CH3OH = approx. 20%

CH3OH equilibrium

Zeolite film
Without separation
membrane

Selective separation of productmaterials promotes reactions.
Copyright © Mitsui Mining & Smelting Co., Ltd. All Rights Reserved.

With separation
membrane* Already announced at the CerSJ 36th Fall Meeting of
the Ceramic Society of Japan.
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Business Segment
Information
Communication

Business Creation Sector’s Owned Media “ M Lab”
We relaunched the owned media “M Lab” in March 2023 for web marketing and open innovation (search for co-creation partners.)
www.mitsui-kinzoku.co.jp/mlab/

Exhibition
product
information

Customers

Push-type
informationtransmission

Suppliers

Startups

Pull-type
informationtransmission

Stories pertheme, etc.

Universities, research
institutions, etc.

Solicit product inquiries, development project requests, inquiries for collaboration, etc.
Copyright © Mitsui Mining & Smelting Co., Ltd. All Rights Reserved.

24

Copyrights andDisclaimer

About copyrights and trademarks• The copyrights, trademarks, and other intellectual property rights related to the information, content, trademarks, logos, etc.
in this document belong to Mitsui Mining & Smelting unless indicated otherwise.
• Content published in this document (text, photographs, images, layouts, etc.) is protected by copyright laws and related
treaties and regulations. Reproduction or reuse, etc. of this content without the permission of the rightsholder, beyond thescope of personal use and to the extent explicitly permitted by law, is prohibited by law.
• It is prohibited to reproduce or reuse this document, in whole or in part, as-is, or modified, beyond the scope of personal use
and to the extent explicitly permitted by law, without the prior written consent of Mitsui Mining & Smelting.
Disclaimer• The information for shareholders and investors in this document has been published with the aim of providing management
information and other information about our company. It is not a solicitation to investment activities, such as purchasing or
sale of our company stock. When making an investment, we ask that you do so under your own judgement. Furthermore, in
no event shall we be liable for any damages incurred from using the information published in this document.
• In addition to past and present facts about our company, this document contains conclusions, plans, and forecasts based on
information available at the time of document creation. For this reason, please be aware of the possibility that future social
situations and the results/circumstances of business activities may differ from those found in this document. Our company is
not obliged to revise and release future forecasts published in this document with new information or future events.

Copyright © Mitsui Mining & Smelting Co., Ltd. All Rights Reserved.

25

Thank you for your kind attention.

Copyright © Mitsui Mining & Smelting Co., Ltd. All Rights Reserved.

26