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ECC-Aqu

Electrochemical Test Cell

The ECC-AQU Electrochemical Cell is dedicated to the characterization of aqueous battery and capacitor systems. The cell is equipped with a reference electrode assembly. Cell parts that come into contact with the electrolyte are made of fine gold and PEEK and can thus withstand all common aqueous electrolytes like sulphuric acid (up to 50% concentration) or potassium hydroxide. Other construction materials like tantalum or platinum are also available. The ECC-AQU cell, although originally developed for aqueous systems, can also be used with many aprotic electrolytes like the widely used TEABF4 / acetonitrile based supercapacitor electrolytes. In this particular application, the extra-ordinary low contact resistance between the gold current collector and the supercapacitor electrode becomes a distinct advantage over aluminium or stainless steel current collectors. Note that gold current collectors MUST NOT come into contact with metallic lithium.

As another member of the modular ECC test cell series, the ECC-AQU electrochemical cell fits into the ECC-STAND docking station.

Features

  • High precision 18 mm diameter sandwich geometry with better than 0.1mm concentricity
  • Adjustable, reproducible and homogeneous mechanical pressure on electrodes
  • Reliable low leakage sealing with PE washers, He leakage rate <10E-8 std cm3/s
  • Easy and reliable electrolyte filling either upon assembly or afterwards via syringe
  • Fast assembly and dismantling, and easy cleaning of cell components
  • Electrodes are easily accessible for post-mortem analysis
  • Reusable cell components except for PE sealing
  • Small and defined electrolyte volume down to 0.1 cm3 due to minimized dead volume
  • Materials in media contact are stainless steel and PEEK
  • Special materials/ solutions on request

Technical Data

  • 90mm x 54mm x 70mm (height x width x depth)
  • electrode diameter 18mm
  • electrolyte volume min 0.1 ml
  • weigth ca. 600 g

Accessories

ECC-Stand

Docking Station for 5 Cells – “plug and play” multi-cell fixture for operation inside temperature chamber or wall mounting, and for connection to a multi-channel potentiostat or battery tester

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