ECC-Opto-Std

ECC-Opto-Std

Test cell for optical and X-ray characterization in the reflective mode with face-to-face arrangement of electrodes

ECC-Opto-Std

Test cell for optical and X-ray characterization in the reflective mode with face-to-face arrangement of electrodes

ECC-Opto-Std

Test cell for optical and X-ray characterization in the reflective mode with face-to-face arrangement of electrodes

Product overview

Product description

The ECC-Opto-Std test cell is dedicated to the inspection of electrodes by optical methods such as light microscopy or Raman spectroscopy working in the reflection mode. Basically, the respective instrument looks through a transparent window onto the backside of the working electrode. For this purpose the working electrode is to be supported on a perforated current collector or a current collector having a single small hole in its center. Different versions are available for use in either aprotic or aqueous electrolytes and can be adapted to the optical instrumentation used.

Features

Adjustable, reproducible and homogeneous mechanical pressure on electrodes

Reliable low leakage sealing with PE washers and EPDM O-rings

Easy and reliable electrolyte filling upon assembly

Fast assembly and dismantling and easy cleaning of cell components

Electrodes are easily accessible for post-mortem analysis

Materials in media contact are stainless steel 1.4404 and PEEK (other materials on request)

Specifications

Manual

Delivery scope

 

Consumables

Spare parts

Test cell

Product overview

Product description

The ECC-Opto-Std test cell is dedicated to the inspection of electrodes by optical methods such as light microscopy or Raman spectroscopy working in the reflection mode. Basically, the respective instrument looks through a transparent window onto the backside of the working electrode. For this purpose the working electrode is to be supported on a perforated current collector or a current collector having a single small hole in its center. Different versions are available for use in either aprotic or aqueous electrolytes and can be adapted to the optical instrumentation used.

Features

Adjustable, reproducible and homogeneous mechanical pressure on electrodes

Reliable low leakage sealing with PE washers and EPDM O-rings

Easy and reliable electrolyte filling upon assembly

Fast assembly and dismantling and easy cleaning of cell components

Electrodes are easily accessible for post-mortem analysis

Materials in media contact are stainless steel 1.4404 and PEEK (other materials on request)

Specifications

Manual

Delivery scope

 

Consumables

Spare parts

Test cell

The ECC-Opto-Std test cell is dedicated to the inspection of electrodes by optical methods such as light microscopy or Raman spectroscopy working in the reflection mode. Basically, the respective instrument looks through a transparent window onto the backside of the working electrode. For this purpose the working electrode is to be supported on a perforated current collector or a current collector having a single small hole in its center. Different versions are available for use in either aprotic or aqueous electrolytes and can be adapted to the optical instrumentation used.

ECC-Opto-Std overview

Features

Adjustable, reproducible and homogeneous mechanical pressure on electrodes

Reliable low leakage sealing with PE washers and EPDM O-rings

Easy and reliable electrolyte filling upon assembly

Fast assembly and dismantling and easy cleaning of cell components

Electrodes are easily accessible for post-mortem analysis

Materials in media contact are stainless steel 1.4404 and PEEK (other materials on request)

Specifications
Manual
Delivery scope

 

Consumables
Spare parts

Test cell

Sample test result: Electrochemical lithiation of a graphite electrode

In this experiment, the ECC-Opto-Std test cell has been used to visualize the color change of a graphite electrode during electrochemical lithiation. A 10 mm diameter free-standing graphite electrode was used as the working electrode (WE). The WE was sandwiched with a glass fiber separator and a lithium metal counter electrode. A holed copper foil was used as the WE current collector. The microscope “looked” through the 1 mm diameter hole in the copper foil onto the backside of the graphite electrode. One picture was taken every 5 minutes.

The time-lapse video starts at the fully lithiated state after the graphite electrode had been fully discharged overnight to 5 mV versus the lithium metal counter electrode. The next 2.5 cycles are shown, starting with the golden color of the fully lithiated graphite, and ending up with the silver-black color of almost pure graphite. Both charge and discharge were conducted at constant current with a rate of C/3, followed by constant voltage periods till the current had dropped to C/30.

Sample test result: Visualizing the potential gradient in a graphite electrode during electrochemical lithiation

In this video, we show how the ECC-Opto-Std test cell can be used to visualize a potential gradient inside graphite, just by using a standard graphite electrode with a continuous copper foil as the current collector (rather than a holed current collector).

A 9 mm diameter lithium iron phosphate (LFP) electrode was used as the lower electrode and lithium ion source. Two glass fiber discs (10 mm dia, 2 x 0.26 mm thick) were used as the separator. A 2 mm wide strip of the graphite electrode was placed on top of the separator, with the supporting copper current collector in between the LFP electrode and the graphite layer.

This way, the copper foil blocks the direct perpendicular ion current between the two opposing electrodes, and forces the ions to enter the graphite at the two edges of the electrode strip.

As a consequence, a beautiful color gradient can be observed along the plane of the graphite electrode.

Gallery

Videos

You can download all of our videos directly from our video page.

Accessories

Window kits

Optional window kits

As a standard, the ECC-Opto-Std is equipped with a borosilicate glass window. Depending on your testing purposes the following additional window kits are available. Each kit includes one or more windows and a modified cell lid. Further window materials like magnesium oxide, silicon dioxide,  silicon nitride or PET (Mylar®)­ are available on request.

Cell holder

Cell holder for ECC-Opto-Std

The cell holder is designed for the use of the ECC-Opto-Std in light microscopes.  It fits nicely on sample stages of most manufacturers (e.g. Thermofisher or Renishaw) utilizing standard microscope slides (75 x 26 mm, ISO 8037-1).

Cell holder for ECC-Opto-Std mounted on a Thermofisher sample stage

Cell holder for ECC-Opto-Std mounted on a Thermofisher sample stage

Accessories

Optional window kits

As a standard, the ECC-Opto-Std is equipped with a borosilicate glass window. Depending on your testing purposes the following additional window kits are available. Each kit includes one or more windows and a modified cell lid. Further window materials like magnesium oxide, silicon dioxide,  silicon nitride or PET (Mylar®)­ are available on request.









Cell holder for ECC-Opto-Std

The cell holder is designed for the use of the ECC-Opto-Std in light microscopes.  It fits nicely on sample stages of most manufacturers (e.g. Thermofisher or Renishaw) utilizing standard microscope slides (75 x 26 mm, ISO 8037-1).

Cell holder for ECC-Opto-Std mounted on a Thermofisher sample stage

Cell holder for ECC-Opto-Std mounted on a Thermofisher sample stage

Accessories

Optional window kits

As a standard, the ECC-Opto-Std is equipped with a borosilicate glass window. Depending on your testing purposes the following additional window kits are available. Each kit includes one or more windows and a modified cell lid. Further window materials like magnesium oxide, silicon dioxide,  silicon nitride or PET (Mylar®)­ are available on request.









Cell holder for ECC-Opto-Std

The cell holder is designed for the use of the ECC-Opto-Std in light microscopes.  It fits nicely on sample stages of most manufacturers (e.g. Thermofisher or Renishaw) utilizing standard microscope slides (75 x 26 mm, ISO 8037-1).

Cell holder for ECC-Opto-Std mounted on a Thermofisher sample stage

Cell holder for ECC-Opto-Std mounted on a Thermofisher sample stage

Recommended tools

ECC-RefLoad

Ref loading tool – Useful tool for conveniently loading the Ref-sleeve

Product details

ECC-LiPunch

Punching tool for lithium foil. The recommended size for use with the ECC-Opto-Std is 10 mm.

Product details

EL-Cut

High Precision Cutting Tool eliminates torn and chipped electrode edges. The recommended size for use with the ECC-Opto-Std is 10 mm.

Product details

Related products

ECC-Opto-Std-Aqu

Test cell for optical characterization in the reflective mode with face-to-face arrangement of electrodes. For aqueous electrochemistry.

Product details

ECC-Opto-SBS

Test cell for optical characterization in the reflective mode with side-by-side arrangement of electrodes

Product details

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