Active nano-CuPt3 electrocatalyst supported on graphene for enhancing reactions at the cathode in all-vanadium redox flow batteries

被引：158

作者：

Flox, Cristina ^{[1
]}

Rubio-Garcia, Javier ^{[1
]}

Nafria, Raquel ^{[1
]}

Zamani, Reza ^{[1
,2
]}

Skoumal, Marcel ^{[1
]}

Andreu, Teresa ^{[1
]}

Arbiol, Jordi ^{[2
,3
]}

Cabot, Andreu ^{[1
,4
]}

Ramon Morante, Joan ^{[1
,4
]}

机构：

[1] IREC, Catalonia Inst Energy Res, Barcelona 08930, Spain

[2] ICMAB CSIC, Inst Ciencia Mat Barcelona, Bellaterra 08193, Spain

[3] ICREA, Inst Catalana Recerca & Estudis Avancats, Barcelona 08010, Spain

[4] Univ Barcelona, Dept Elect, E-08028 Barcelona, Spain

来源：

CARBON | 2012年 / 50卷 / 06期

关键词：

ELECTROOXIDATION; NANOPARTICLES; CATALYSTS; METHANOL;

D O I：

10.1016/j.carbon.2012.01.060

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Graphene-supported monometallic (Pt) and bimetallic (CuPt3) cubic nanocatalysts have been investigated as new positive electrode materials for improving the VO2-7VO(2) redox process occurring in the vanadium redox flow batteries (VRB). High-resolution transmission electron microscopy (HRTEM) and scanning electron microscopy (SEM) have been employed to characterize the electrodes. The presence of the CuPt3 nanocubes on graphene conferred higher electrocatalytic activity due to the much higher electroactive area compared to that obtained with the Pt nanoparticles. The electrochemical surface area of the nano-(CuPt3)-decorated graphene electrode was 105% higher compared to non-decorated graphene, being then a promising alternative for improving the VRB. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：2372 / 2374

页数：3

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