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Electrochemical Reduction of CO2 at Temperatures Below 300 oC

Electrochemical Reduction of CO2 at Temperatures Below 300 oC

Authors :
Mogens Bjerg Mogensen
Jonathan Hallinder
Peter Holtappels
Source :
ECS Transactions. 41:61-73
Publication Year :
2012
Publisher :
The Electrochemical Society, 2012.

Abstract

Reduction of CO2 at intermediate temperatures (T< 300 oC) is a tempting way to produce hydrocarbons. One benefit of performing CO2 reduction below 300 oC is that it would possibly allow a single process for production of hydrocarbons. CsH2PO4, BaHPO4 and a composite thereof have been investigated as electrolyte materials both with respect to thermal stability and to conductivity. BaHPO4 showed an improved thermal stability compared to CsH2PO4, but it did at the same time exhibit a low conductivity (1⋅10-6 S cm-1 at 304 oC). CsH2PO4 started to dehydrate at 249 oC, but this dehydration was shown to be reversible. Its conductivity was measured to be 2⋅10-2 S cm-1 at 240 oC. Full cells with copper as the CO2 reduction catalyst have been manufactured and tested in CO2 containing atmospheres. Initial performance of 34 mA cm-2 at 245 oC has been achieved.

Details

ISSN :
19386737 and 19385862
Volume :
41
Database :
OpenAIRE
Journal :
ECS Transactions
Accession number :
edsair.doi...........2307eb12993da28afce6d9b9fc7f2e3e
Full Text :
https://doi.org/10.1149/1.3702413