Influence of the RuO2 Nanosheet Content in RuO2 Nanosheet-Pt/C Composite Toward Improved Performance of Oxygen Reduction Electrocatalysts

被引：17

作者：

Chauvin, Christophe ^{[1
]}

Saida, Takahiro ^{[1
]}

Sugimoto, Wataru ^{[1
]}

机构：

[1] Shinshu Univ, Fac Text Sci & Technol, Ueda, Nagano 3868567, Japan

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2014年 / 161卷 / 03期

关键词：

DYNAMIC-RESPONSE PERFORMANCE; RUTHENIUM OXIDE; ALLOYS; CO; STABILITY; CATALYSTS; DURABILITY; BEHAVIOR; NI; CU;

D O I：

10.1149/2.077403jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A series of composite electrocatalysts composed of RuO2 nanosheets and carbon supported Pt (RuO(2)ns-Pt/C) has been synthesized by mixing different amounts of commercial 50 wt% Pt/C with RuO(2)ns derived from exfoliation of layered K0.2RuO2.1 center dot nH(2)O. The oxygen reduction activity and stability of the different electrocatalysts has been evaluated as a function of the nanosheet content in the composite electrocatalysts. An increase in initial activity was observed for composite electrocatalyst with RuO2/Pt<0.4. After conducting accelerated durability tests, the RuO(2)ns-Pt/C composite electrocatalyst with RuO2/Pt = 0.3 exhibited a 25% higher mass activity toward oxygen reduction than the pristine Pt/C electrocatalyst. (C) 2014 The Electrochemical Society. All rights reserved.

引用

页码：F318 / F322

页数：5

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