Efficient solar-driven electrochemical CO2 reduction to hydrocarbons and oxygenates

被引：128

作者：

Gurudayal ^{[1
,2
,3
]}

Bullock, James ^{[4
,5
]}

Sranko, David F. ^{[1
,6
]}

Towle, Clarissa M. ^{[3
,5
]}

Lum, Yanwei ^{[1
,3
,5
]}

Hettick, Mark ^{[4
,5
]}

Scott, M. C. ^{[3
,7
]}

Javey, Ali ^{[4
,5
]}

Ager, Joel ^{[1
,2
,3
,5
]}

机构：

[1] Lawrence Berkeley Natl Lab, Joint Ctr Artificial Photosynth, 1 Cyclotron Rd, Berkeley, CA 94720 USA

[2] Lawrence Berkeley Natl Lab, Chem Sci Div, 1 Cyclotron Rd, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

[4] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA

[5] Lawrence Berkeley Natl Lab, Mat Sci Div, 1 Cyclotron Rd, Berkeley, CA 94720 USA

[6] Hungarian Acad Sci, Ctr Energy Res, Surface Chem & Catalysis Dept, Konkoly Thege Miklos Ut 29-33, H-1121 Budapest, Hungary

[7] Lawrence Berkeley Natl Lab, Natl Ctr Elect Microscopy Mol Foundry, Berkeley, CA 94720 USA

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2017年 / 10卷 / 10期

关键词：

CARBON-DIOXIDE; COPPER; FUELS; ELECTROREDUCTION; ELECTRODES; CONVERSION; MEMBRANE; FORMATE; DEVICE; ENERGY;

D O I：

10.1039/c7ee01764b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Solar to chemical energy conversion could provide an alternative to mankind's unsustainable use of fossil fuels. One promising approach is the electrochemical reduction of CO2 into chemical products, in particular hydrocarbons and oxygenates which are formed by multi-electron transfer reactions. Here, a nanostructured Cu-Ag bimetallic cathode is utilized to selectively and efficiently facilitate these reactions. When operated in an electrolysis cell, the cathode provides a constant energetic efficiency for hydrocarbon and oxygenate production. As a result, when coupled to Si photovoltaic cells, solar conversion efficiencies of 3-4% to the target products are achieved for 0.35 to 1 Sun illumination. Use of a four-terminal III-V/Si tandem solar cell configuration yields a conversion efficiency to hydrocarbons and oxygenates exceeding 5% at 1 Sun illumination. This study provides a clear framework for the future advancement of efficient solar-driven CO2 reduction devices.

引用

页码：2222 / 2230

页数：9

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