Promoted Oxygen Reduction Activity of Ag/Reduced Graphene Oxide by Incorporated CoOx

被引：10

作者：

Sun, Fang ^{[1
]}

Zhang, Guoxin ^{[1
]}

Xu, Yuqi ^{[1
]}

Chang, Zheng ^{[1
]}

Wan, Pengbo ^{[1
]}

Li, Yaping ^{[1
]}

Sun, Xiaoming ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2014年 / 132卷

关键词：

Oxygen reduction reaction; CoOx; Silver; Synergistic effect; AG NANOPARTICLES; CARBON; CATALYST; ELECTROCATALYSTS; NANOCRYSTALS;

D O I：

10.1016/j.electacta.2014.03.125

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

CoOx incorporated in Ag/reduced graphene oxide nanocomposites (CoOx-Ag/rGO) were synthesized through an one-pot solvothermal method. Electrochemical results showed that CoOx nanoparticles could greatly promote dispersion of anchored Ag nanoparticles and increase the limiting current density for the whole CoOx-Ag/rGO nanocomposites when catalyzing oxygen reduction reaction (ORR) in alkaline medium. With CoOx formation beside the Ag nanoparticles, a much higher current density and a preferable four-electron pathway were achieved for the CoOx-Ag/rGO nanocomposites. Meanwhile, the CoOx-Ag/rGO nanocomposites showed remarkable long-term stability and tolerance toward methanol than the commercially available 20% Pt/C catalyst. More importantly, this work could finally lead to a practical significance for developing high-performance bicomponent electrocatalysts with low-cost for fuel cells and relevant electrochemical technologies. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：136 / 141

页数：6

共 29 条

[1] The use of polyethyleneimine-modified reduced graphene oxide as a substrate for silver nanoparticles to produce a material with lower cytotoxicity and long-term antibacterial activity [J].

Cai, Xiang ;

Lin, Minsong ;

Tan, Shaozao ;

Mai, Wenjie ;

Zhang, Yuanming ;

Liang, Zhiwen ;

Lin, Zhidan ;

Zhang, Xiuju .

CARBON, 2012, 50 (10) :3407-3415

[2] A Simple Method for Preparing the Highly Dispersed Supported Co3O4 on Silica Support [J].

Chen, Jianfeng ;

Zhang, Yurui ;

Tan, Li ;

Zhang, Yi .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2011, 50 (07) :4212-4215

[3] Oxygen reduction activity of Pd-Mn3O4 nanoparticles and performance enhancement by voltammetrically accelerated degradation [J].

Choi, Chang Hyuck ;

Park, Sung Hyeon ;

Woo, Seong Ihl .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2012, 14 (19) :6842-6848

[4] Engineering Interface and Surface of Noble Metal Nanoparticle Nanotubes toward Enhanced Catalytic Activity for Fuel Cell Applications [J].

Cui, Chun-Hua ;

Yu, Shu-Hong .

ACCOUNTS OF CHEMICAL RESEARCH, 2013, 46 (07) :1427-1437

[5]

Guo S., 2012, Angew Chem, V124, P11940

[6] High-Loading Cobalt Oxide Coupled with Nitrogen-Doped Graphene for Oxygen Reduction in Anion-Exchange-Membrane Alkaline Fuel Cells [J].

He, Qinggang ;

Li, Qing ;

Khene, Samson ;

Ren, Xiaoming ;

Lopez-Suarez, Franz E. ;

Lozano-Castello, Dolores ;

Bueno-Lopez, Agustin ;

Wu, Gang .

JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (17) :8697-8707

[7] Simple room-temperature preparation of high-yield large-area graphene oxide [J].

Huang, N. M. ;

Lim, H. N. ;

Chia, C. H. ;

Yarmo, M. A. ;

Muhamad, M. R. .

INTERNATIONAL JOURNAL OF NANOMEDICINE, 2011, 6 :3443-3448

[8] Oxygen Reduction Electrocatalyst Based on Strongly Coupled Cobalt Oxide Nanocrystals and Carbon Nanotubes [J].

Liang, Yongye ;

Wang, Hailiang ;

Diao, Peng ;

Chang, Wesley ;

Hong, Guosong ;

Li, Yanguang ;

Gong, Ming ;

Xie, Liming ;

Zhou, Jigang ;

Wang, Jian ;

Regier, Tom Z. ;

Wei, Fei ;

Dai, Hongjie .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (38) :15849-15857

[9]

Liang YY, 2011, NAT MATER, V10, P780, DOI [10.1038/NMAT3087, 10.1038/nmat3087]

[10] Highly dispersed Ag nanoparticles on nanosheets of reduced graphene oxide for oxygen reduction reaction in alkaline media [J].

Lim, Eun Ja ;

Choi, Sung Mook ;

Seo, Min Ho ;

Kim, Youngmin ;

Lee, Seonhwa ;

Kim, Won Bae .

ELECTROCHEMISTRY COMMUNICATIONS, 2013, 28 :100-103

← 1 2 3 →