Carbon dioxide electroreduction to C2 products over copper-cuprous oxide derived from electrosynthesized copper complex

被引：338

作者：

Zhu, Qinggong ^{[1
]}

Sun, Xiaofu ^{[1
,2
]}

Yang, Dexin ^{[1
,2
]}

Ma, Jun ^{[1
]}

Kang, Xinchen ^{[1
,2
]}

Zheng, Lirong ^{[3
]}

Zhang, Jing ^{[3
]}

Wu, Zhonghua ^{[3
]}

Han, Buxing ^{[1
,2
,4
]}

机构：

[1] Chinese Acad Sci, CAS Res Educ Ctr Excellence Mol Sci, CAS Key Lab Colloid Interface & Chem Thermodynam, Inst Chem,Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[4] East China Normal Univ, Sch Chem & Mol Engn, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China

来源：

NATURE COMMUNICATIONS | 2019年 / 10卷

基金：

中国国家自然科学基金;

关键词：

CO2; REDUCTION; ELECTROCHEMICAL REDUCTION; IN-SITU; EFFICIENT REDUCTION; ELECTROLYTE DESIGN; HIGH-SELECTIVITY; WATER OXIDATION; CATALYSTS; CU; ETHYLENE;

D O I：

10.1038/s41467-019-11599-7

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Efficient electroreduction of carbon dioxide to multicarbon products in aqueous solution is of great importance and challenging. Unfortunately, the low efficiency of the production of C-2 products limits implementation at scale. Here, we report reduction of carbon dioxide to C-2 products (acetic acid and ethanol) over a 3D dendritic copper-cuprous oxide composite fabricated by in situ reduction of an electrodeposited copper complex. In potassium chloride aqueous electrolyte, the applied potential was as low as -0.4 V vs reversible hydrogen electrode, the overpotential is only 0.53 V (for acetic acid) and 0.48 V (for ethanol) with high C-2 Faradaic efficiency of 80% and a current density of 11.5 mA cm(-2). The outstanding performance of the electrode for producing the C-2 products results mainly from near zero contacting resistance between the electrocatalysts and copper substrate, abundant exposed active sites in the 3D dendritic structure and suitable copper(I)/copper(0) ratio of the electrocatalysts.

引用

页数：11

共 68 条

[51] High Selectivity for Ethylene from Carbon Dioxide Reduction over Copper Nanocube Electrocatalysts [J].