期刊
ACS ENERGY LETTERS
卷 4, 期 7, 页码 1770-1777出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.9b01142
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资金
- European Research Council (ERC) under the European Union [716539]
- New National Excellence Program of the Ministry of Human Capacities [UNKP-18-3]
- Szechenyi 2020 program [GINOP-2.2.1-15-2017-00041]
- European Research Council (ERC) [716539] Funding Source: European Research Council (ERC)
Electrochemical reduction of CO2 is a value-added approach to both decrease the atmospheric emission of carbon dioxide and form valuable chemicals. We present a zero gap electrolyzer cell, which continuously converts gas phase CO2 to products without using any liquid catholyte. This is the first report of a multilayer CO2 electrolyzer stack for scaling up the electrolysis process. CO formation with partial current densities above 250 mA cm(-2 )were achieved routinely, which was further increased to 300 mA cm(-2) (with similar to 95% faradic efficiency) by pressurizing the CO2 inlet (up to 10 bar). Evenly distributing the CO2 gas among the layers, the electrolyzer operates identically to the sum of multiple single-layer electrolyzer cells. When passing the CO2 gas through the layers consecutively, the CO2 conversion efficiency increased. The electrolyzer simultaneously provides high partial current density, low cell voltage (-3.0 V), high conversion efficiency (up to 40%), and high selectivity for CO production.
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