EL-CELL PAT-Cell-Gas, Руководство пользователя, Страница: 12 / 23

Page 12 of 23
User Manual PAT-Cell-Gas
Release 1.34
6.2 Mode 2: OEMS mode
The PAT-Core setup using a lower plunger with flow field provides almost perfect plug-flow of
the purge gas being essential for quantitative time-resolved analysis. Gases evolved or
consumed at the working electrode may be analysed through the composition change of the
gas stream that is to be passed along the spiral-type flow field below the working electrode.
The composition of the outgoing gas can be analyzed by e.g. mass spectrometry. The pressure
gradient between cell headroom and spiral-type flow field effectively prevents back-mixing.
This and the tiny gas volume of the flow field ensure best possible time resolution.
PAT-Core configuration example
Upper plunger (current collector), stainless steel
Counter electrode e.g. LFP
Insulation sleeve, PEEK with
Separator and reference electrode
Working electrode e.g. gas
diffusion electrode
Lower plunger (current collector) with
flow field, stainless steel
Gas flow along the flow field