聚合物负载液层电解槽实现了电化学将一氧化碳高效还原为一氧化碳。
Polymer-Supported Liquid Layer Electrolyzer Enabled Electrochemical CO Reduction to CO with High Energy Efficiency.
作者信息
Li Shangyu, Ma Yiwen, Zhao Tiancheng, Li Jiaxin, Kang Xinyue, Guo Wen, Wen Yunzhou, Wang Liping, Wang Yurui, Lin Renxing, Li Tiantian, Tan Hairen, Peng Huisheng, Zhang Bo
机构信息
State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, 200438, Shanghai, P. R. China.
National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Science, Nanjing University, 210093, Jiangsu, P. R. China.
出版信息
ChemistryOpen. 2021 Jun;10(6):639-644. doi: 10.1002/open.202100084.
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 .
将二氧化碳（CO₂）电化学转化为一氧化碳（CO）是一种在将多余的可持续能源转化为重要化学原料的同时减少CO₂排放的有利方法。在高电流密度（>100 mA cm⁻²）下，低能量效率（EE）和难以承受的电池成本限制了传统CO电解槽的工业应用。因此，一项关键且紧迫的任务是设计一种新型的CO电解槽，使其能够在高电流密度下高效运行。在此，我们报道了一种聚合物支撑液层（PSL）电解槽，它使用聚丙烯无纺布作为阳极和阴极之间的隔膜。向银基阴极供应潮湿的CO₂，并将氢氧化钾供应到储量丰富的镍铁基阳极。在这种配置下，PSL为阴极反应提供了高pH条件并降低了电池电阻，在100 mA cm⁻²时实现了超过66%的高全电池能量效率。
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