Bipolar Carbon
Separator
Just Powder. Just Press.
Carbon powder and synthetic resin are used as raw materials fordie press molding. We have originally developed a manufacturing
technology for composite materials, and established a fully
automated production line. To realize the products requested byour customers, we optimize material selection and manufacturingconditions to provide high-quality products.

Characteristics
Materials

Carbon powder and synthetic resin

Shape processing

Shape processing die press molding

Advantage

Advantage

Carbon exhibits excellent corrosion resistance.
The mixture ratio can be adjusted with an accuracy of 0.01%.
Good Balance between Production cost and Physicalproperties.

Low production cost
High speed production
Manufacturing molds internally(Manufacturing through cutting processes is also available.)

Available materials

Maximum shape

Natural and artiﬁcial graphite powder
Thermoplastics and thermosets

Width and length:950 mm max
Thickness:1.0〜10 mm

Manufacturing technology
Our manufacturing process is very simple, so we have developed automated manufacturing facilities
incorporating robots.
Press molding using powder raw materials
Since products with groove shapes can be manufactured
using molds, post-processing (cutting processes) is unnecessary.
Excellent in cost performance and low environmental impact
Product quality can be ﬁnely adjusted by varying the formulation
cost.

Mixing

FillingMolding

Inspection

Bipolar Carbon
Separator
Properties
NamePE

PP

PVDF

PPS

PF

Penetration resistance
［mΩ㎠］

5.45

3.85

3.70

3.70

5.70

Bending strength
［Mpa］

2432

314150

Bending strain
［％］

0.54

0.74

0.60

0.35

0.38

Mass production◯◯◯◯△Production cost◯△×××Corrosion resistance◯◯◯◯◯Heat resistanttemperature ［℃］100140160

220200We can measure the propertiesof separators in-house.

Gas permeability (He, H2)

The combination of resin and carbon is possible regardless of the type.

Electric resistance

We can ﬁne-tune the resin ratio.

Thermal expansion

We have been conducting research and development in collaboration

Bending strengthwith resin manufacturers and graphite manufacturers for many years.

Application
Polymer Electrolyte Fuel cell and storage battery

Electricity

A separator is one of the essential components in fuel cells. Fuelcells generate electricity through the chemical reaction withhydrogen and oxygen. The basic unit of a fuel cell is called a unit▲

▲cell, which consists of a catalyst to accelerate the chemical
reaction, an electrolyte membrane that conducts protons, and aseparator. By stacking multiple cells together, high-voltage power
generation is achieved. Fuel cells and batteries serve various
purposes, including being environmentally friendly and providing

Fuel-cellvehicle

Large-scale Energy
Storage Systemstable electricity supply during disasters and at night.

Storage ofElecticity

Carbon separator

GenerateElectricity

Electrolyte
StationaryStorage BatteryHydrogen
Drone

Unit cell

Stucked cells

Probe

FJ Comopsite Materials Co.,LTD2-2-3, Kashiwadai-minami, Chitose-shi, Hokkaido, 066-0009, Japan
TEL ： 0123-29-7034 FAX ： 0123-29-7035
JQA-QMA16308

URL ： https://www.fj-composite.com/

Fuel Cells forHome Use