EQ-STC-BEW
EQ-STC-BEW

Split Test Cell with Beryllium (Be) Window
For Battery Electrode In-situ Analysis

OPERATION MANUAL

860 South 19th Street, Richmond, CA 94804, USA
TEL: (510) 525 – 3070 FAX: (510) 525 – 4705
Website: www.mtixtl.com Email: info@mtixtl.com
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EQ-STC-BEW

Table of Contents
Introduction ............................................................................................................................................................................ 3
Specifications .......................................................................................................................................................................... 3Structure ................................................................................................................................................................................. 4
Disassembled ...................................................................................................................................................................... 5Tools .................................................................................................................................................................................... 5
Assembly ................................................................................................................................................................................. 6
Precaution ............................................................................................................................................................................... 8

Thanks for purchasing MTI's product, please carefully read this manual before use, wehave no responsibility for any damage caused by misuse.
Note: The specification data may be different from the real product since MTI keeps
upgrading the machine; if any confusion, please visit our website www.mtixtl.com for thelatest information.
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EQ-STC-BEWIntroduction
EQ-STC-BEW split-able test cell features a 40mm Dia. Beryllium (Be) Window which allows in-situ
X-Ray analysis of battery material phase transitions during charging/discharging cycles. Such a cell canaccommodate various sizes (15, 19, 20 and 24 mm diameter) of electrodes and separators. It is designed foreasy & quick assembling tests of the electrode materials of rechargeable batteries.

SpecificationsFeatures••••Featured a Beryllium (Be) Window which is nearly Transparent to X-rays.
Such window is also electrically conductive and thus allows XRD in-situ
analysis for electrode materials during cell charging / discharging cycles orunder various temperature conditions.
A free stands is included for the proper height adjustment of the split cell inorder to fit the best testing position. (430mm to 480mm height adjustable)
Electrolyte corrosive-proof PTFE Guide Sleeve capable of withstanding up to250℃.
Sealed be electrolyte corrosion-resistant PTFE O-rings.
Slim design allows the operation inside of the glove box.
Easy to assemble, separate or clean after the completion of each experiment.
Same functionality as “Swagelok Coin Cell” but more size options forelectrodes.
Stainless Steel constructed body and pressing plate
Beryllium (Be) window
Height: 62mm min. without load
Diameter: 75mm (widest diameter without lead)
Lead-exposed length: 19mm
Beryllium (Be) Window: 40mm Dia. X 1.5mm thickness
Beryllium (Be) Observation Window allows the X-Ray beam penetration.
XRD diffraction angle (2θ) 25°~ 155°(For the measurement of diffraction
peaks beyond this range, please contact engineer for more details)
Diffraction pattern of SiO2 (10-10)
A typical setup of split test cell with XRD device250℃•••

PTFE Sleeve around a stainless steel pressing pad
PTFE sleeve I.D.: 15,19,20 and 24 mm
PTFE sleeve O.D.: 29 mm

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Components &MaterialsDimension

Be Observation
WindowMax. WorkingTemperature
PTFE Sleeve SizeOption••••
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EQ-STC-BEWMax. Cell Thickness
Application Notes••••

Cathode + Separator + Anode: 5mmFor In-situ Laser Raman Spectroscopy, the typical Wavelength used isranging from ultra-violet (244 nm ~ 364 nm) to near infrared (785 nm ~ 1064nm). The Be observation window we used is Nearly transparent in thiswavelength range.
For Better in-situ observation, electrode material shall face the window. Youmay use lab press and dry pressing die below to prepare an electrode pellet
instead of using electrode coated Al or Cu foil.
Optional: Purchase a vacuum pen for easy component placement.

Structure

Anode

Cathode4

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EQ-STC-BEW

Disassembled

Be Window
Electrode
HolderPTFE White
Ring

PTFE O-Ring

Hex
ScrewsCell
BaseCell topTools

Hex Key

Electrode
HolderDriver5

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EQ-STC-BEW

Assembly

1. Prepare the Device Base

2. Insert the PTFE white ring to be base.

3. Insert the Be Window.

4. Insert the electrode holder.

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EQ-STC-BEW

5. Tighten the electrode holder with the provided
Driver.

6. Align the 4 threaded holes with the Cell base and top.

7. Tighten the hex screws with the provided hex key.

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EQ-STC-BEW

Note: This screw cap
must by tighten up
when in use.

Precaution
1. In order to prevent electrolyte leakage, pleasetighten the screw cap on the top after electrolyte
injection.

2.Adjust the cylinder spring pressure according to the cell’s thickness:• Unscrew and remove the screw cap. (pic. 1)• Adjust the spring height to desired position with a flat head screw driver. (pic. 2)• Reinstall the screw cap and tighten it before use.

Pic. 1

Pic. 2

If you have any questions, please contact us at info@mtictl.com, MTI's engineers team will help you out within
24 hours.
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