Cu2O/CuS Nanocomposites Show Excellent Selectivity and Stability for Formate Generation via Electrochemical Reduction of Carbon Dioxide

被引：23

作者：

Wang, Shanwen ^{[1
]}

Kou, Tianyi ^{[1
]}

Varley, Joel B. ^{[2
]}

Akhade, Sneha A. ^{[2
]}

Weitzner, Stephen E. ^{[2
]}

Baker, Sarah E. ^{[2
]}

Duoss, Eric B. ^{[2
]}

Li, Yat ^{[1
]}

机构：

[1] Univ Calif Santa Cruz, Dept Chem & Biochem, Santa Cruz, CA 95064 USA

[2] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

来源：

ACS MATERIALS LETTERS | 2021年 / 3卷 / 01期

关键词：

TOTAL-ENERGY CALCULATIONS; CO2; REDUCTION; FORMIC-ACID; CU; EFFICIENT; TIN; ELECTROREDUCTION; NANOCATALYSTS; NANOCRYSTALS; ADSORPTION;

D O I：

10.1021/acsmaterialslett.0c00520

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Formate is an important value-added chemical that can be produced via electrochemical CO2 reduction reactions (CO2RR). Cu2O-based catalysts have previously demonstrated decent activity for formate generation; however, they often suffer from poor electrochemical stability under reductive conditions. Here, we report a new Cu2O/CuS composite catalyst that simultaneously achieves an excellent faradaic efficiency of 67.6% and a large partial current density of 15.3 mA/cm(2) at -0.9 V vs RHE for formate. Importantly, it maintains an average faradaic efficiency of 62.9% for at least 30 h at the same potential. The catalytic selectivity and stability for formate production outperform other Cu, CuS, and Cu2O catalysts.

引用

页码：100 / 109

页数：10

共 67 条

[1] PROJECTOR AUGMENTED-WAVE METHOD [J].

BLOCHL, PE .

PHYSICAL REVIEW B, 1994, 50 (24) :17953-17979

[2] A novel method of etching copper oxide using acetic acid [J].

Chavez, KL ;

Hess, DW .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (11) :G640-G643

[3] A solar responsive cubic nanosized CuS/Cu2O/Cu photocathode with enhanced photoelectrochemical activity [J].

Chen, Xin ;

Chen, Rong ;

Zhu, Xun ;

Liao, Qiang ;

Zhang, Yuxin ;

Ye, Dingding ;

Zhang, Biao ;

Yu, Youxu ;

Li, Jinwang .

JOURNAL OF CATALYSIS, 2019, 372 :182-192

[4] On the origin of the elusive first intermediate of CO2 electroreduction [J].

Chernyshova, Irina, V ;

Somasundaran, Ponisseril ;

Ponnurangam, Sathish .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (40) :E9261-E9270

[5] Catalyst electro-redeposition controls morphology and oxidation state for selective carbon dioxide reduction [J].

De Luna, Phil ;

Quintero-Bermudez, Rafael ;

Cao-Thang Dinh ;

Ross, Michael B. ;

Bushuyev, Oleksandr S. ;

Todorovic, Petar ;

Regier, Tom ;

Kelley, Shana O. ;

Yang, Peidong ;

Sargent, Edward H. .

NATURE CATALYSIS, 2018, 1 (02) :103-110

[6] Copper price estimation using bat algorithm [J].

Dehghani, Hesam ;

Bogdanovic, Dejan .

RESOURCES POLICY, 2018, 55 :55-61

[7] Amorphizing of Cu Nanoparticles toward Highly Efficient and Robust Electrocatalyst for CO2 Reduction to Liquid Fuels with High Faradaic Efficiencies [J].

Duan, Yan-Xin ;

Meng, Fan-Lu ;

Liu, Kai-Hua ;

Yi, Sha-Sha ;

Li, Si-Jia ;

Yan, Jun-Min ;

Jiang, Qing .

ADVANCED MATERIALS, 2018, 30 (14)

[8] A highly stable CuS and CuS-Pt modified Cu2O/CuO heterostructure as an efficient photocathode for the hydrogen evolution reaction [J].

Dubale, Amare Aregahegn ;

Tamirat, Andebet Gedamu ;

Chen, Hung-Ming ;

Berhe, Taame Abraha ;

Pan, Chun-Jern ;

Su, Wei-Nien ;

Hwang, Bing-Joe .

JOURNAL OF MATERIALS CHEMISTRY A, 2016, 4 (06) :2205-2216

[9] SIMULATION OF THE LMM AUGER-SPECTRA OF COPPER [J].

DUBOT, P ;

JOUSSET, D ;

PINET, V ;

PELLERIN, F ;

LANGERON, JP .

SURFACE AND INTERFACE ANALYSIS, 1988, 12 (1-12) :99-104

[10] Aqueous CO2 reduction on morphology controlled CuxO nanocatalysts at low overpotential [J].

Fan, Mengyang ;

Bai, Zhengyu ;

Zhang, Qing ;

Ma, Chengyu ;

Zhou, Xiao-Dong ;

Qiao, Jinli .

RSC ADVANCES, 2014, 4 (84) :44583-44591

← 1 2 3 4 5 6 7 →