Polymer-Supported Liquid Layer Electrolyzer Enabled Electrochemical CO2 Reduction to CO with High Energy Efficiency

被引：10

作者：

Li, Shangyu ^{[1
,2
]}

Ma, Yiwen ^{[1
,2
]}

Zhao, Tiancheng ^{[1
,2
]}

Li, Jiaxin ^{[1
,2
]}

Kang, Xinyue ^{[1
,2
]}

Guo, Wen ^{[1
,2
]}

Wen, Yunzhou ^{[1
,2
]}

Wang, Liping ^{[1
,2
]}

Wang, Yurui ^{[3
]}

Lin, Renxing ^{[3
]}

Li, Tiantian ^{[3
]}

Tan, Hairen ^{[3
]}

Peng, Huisheng ^{[1
,2
]}

Zhang, Bo ^{[1
,2
]}

机构：

[1] Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China

[2] Fudan Univ, Lab Adv Mat, Shanghai 200438, Peoples R China

[3] Nanjing Univ, Coll Engn & Appl Sci, Natl Lab Solid State Microstruct, Jiangsu Key Lab Artificial Funct Mat, Nanjing 210093, Jiangsu, Peoples R China

来源：

CHEMISTRYOPEN | 2021年 / 10卷 / 06期

基金：

中国国家自然科学基金;

关键词：

CO2; conversion; electrochemical reduction; electrolyzers; polymer-supported liquid layers; low cell voltage; CARBON-DIOXIDE; PH MEASUREMENT; ELECTROREDUCTION; CONVERSION; CATALYST;

D O I：

10.1002/open.202100084

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The electrochemical conversion of carbon dioxide (CO2) to carbon monoxide (CO) is a favorable approach to reduce CO2 emission while converting excess sustainable energy to important chemical feedstocks. At high current density (>100 mA cm(-2)), low energy efficiency (EE) and unaffordable cell cost limit the industrial application of conventional CO2 electrolyzers. Thus, a crucial and urgent task is to design a new type of CO2 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 CO2 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(-2).

引用

页码：639 / 644

页数：6

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