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The electrochemical conversion of carbon dioxide (CO ) to carbon monoxide (CO) is a favorable approach to reduce CO emission while converting excess sustainable energy to important chemical feedstocks. At high current density (>100 mA cm ), low energy efficiency (EE) and unaffordable cell cost limit the industrial application of conventional CO electrolyzers. Thus, a crucial and urgent task is to design a new type of CO electrolyzer that can work efficiently at high current density. Here we report a polymer-supported liquid layer (PSL) electrolyzer using polypropylene non-woven fabric as a separator between anode and cathode. Ag based cathode was fed with humid CO and potassium hydroxide was fed to earth-abundant NiFe-based anode. In this configuration, the PSL provided high-pH condition for the cathode reaction and reduced the cell resistance, achieving a high full cell EE over 66 % at 100 mA cm .
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8186884 | PMC |
| http://dx.doi.org/10.1002/open.202100084 | DOI Listing |
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