Three-Dimensional Macroporous NiCo2O4 Sheets as a Non-Noble Catalyst for Efficient Oxygen Reduction Reactions

被引：97

作者：

Xiao, Ying ^{[1
]}

Hu, Chuangang ^{[1
]}

Qu, Liangti ^{[1
]}

Hu, Changwen ^{[1
]}

Cao, Minhua ^{[1
]}

机构：

[1] Beijing Inst Technol, Dept Chem, Key Lab Cluster Sci, Minist Educ China, Beijing 100081, Peoples R China

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2013年 / 19卷 / 42期

基金：

中国国家自然科学基金;

关键词：

fuel cells; macroporous materials; metal oxides; nickel; spinel; METAL-FREE ELECTROCATALYSTS; HIGH-PERFORMANCE ANODE; ELECTROCHEMICAL PROPERTIES; MESOPOROUS CARBON; CATHODE CATALYST; GRAPHENE; NANOPARTICLES; NANORODS; CO; NANOSHEETS;

D O I：

10.1002/chem.201302193

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A facile and low-cost strategy is developed to prepare three-dimensional (3D) macroporous NiCo2O4 sheets, which can be used as a highly efficient non-noble metal electrocatalyst for the oxygen reduction reaction (ORR) in alkaline conditions. The as-obtained sheets have a thickness of about 150nm and feature a typical 3D macroporous structure with pore volumes of up to 0.23cm(3)g(-1), which could decrease the mass transport resistance and allow easier access of the reactants to the active surface sites. The as-prepared macroporous NiCo2O4 sheets exhibit high electrocatalytic activity for ORR with a four-electron pathway, good long-term stability and high tolerance against methanol. The unique 3D macroporous structure and intrinsic properties may be responsible for their high performance.

引用

页码：14271 / 14278

页数：8

共 55 条

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