A facile template approach for the synthesis of mesoporous Fe3C/Fe-Ndoped carbon catalysts for efficient and durable oxygen reduction reaction

被引：1

作者：

Shuai Li ^{[1
]}

Bo Li ^{[1
]}

Liang Ma ^{[1
]}

Jia Yang ^{[1
]}

Hangxun Xu ^{[1
]}

机构：

[1] CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China

来源：

ChineseChemicalLetters | 2017年 / 28卷 / 11期

基金：

中国博士后科学基金; 中国国家自然科学基金; 中央高校基本科研业务费专项资金资助;

关键词：

Mesoporous carbon; Polypyrrole; Iron carbide nanoparticles; Oxygen reduction reaction; Electrocatalysis;

D O I：

暂无

中图分类号：

O643.36 [催化剂];

学科分类号：

081705 ;

摘要：

Facile synthetic approaches toward the development of efficient and durable nonprecious metal catalysts for the oxygen reduction reaction(ORR) are very important for commercializing advanced electrochemical devices such as fuel cells and metal-air batteries. Here we report a novel template approach to synthesize mesoporous Fe-N-doped carbon catalysts encapsulated with Fe3C nanoparticles.In this approach, the layer-structured Fe OCl was first used as a template for the synthesis of a threedimensional polypyrrole(PPy) structure. During the removal of the Fe OCl template, the Fe3+can be absorbed by PPy and then converted into Fe3C nanoparticles and Fe-N-C sites during the pyrolyzing process. As a result, the as-prepared catalysts could exhibit superior electrocatalytic ORR performance to the commercial Pt/C catalyst in alkaline solutions. Furthermore, the Zn-air battery assembled using the mesoporous carbon catalyst as the air electrode could surpass the commercial Pt/C catalyst in terms of the power density and energy density.

引用

页码：2159 / 2163

页数：5