Litchi-like porous Fe/N/C spheres with atomically dispersed FeNx promoted by sulfur as highly efficient oxygen electrocatalysts for Zn-air batteries

被引：53

作者：

Wei, Qiliang ^{[1
]}

Zhang, Gaixia ^{[1
]}

Yang, Xiaohua ^{[1
]}

Fu, Yanqing ^{[1
]}

Yang, Guanhua ^{[1
]}

Chen, Ning ^{[2
]}

Chen, Weifeng ^{[2
]}

Sun, Shuhui ^{[1
]}

机构：

[1] Inst Natl Rech Sci Energie Mat & Telecommun, 1650 Blvd Lionel Boulet, Varennes, PQ J3X 1S2, Canada

[2] CLS, 44 Innovat Blvd, Saskatoon, SK S7N 2V3, Canada

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2018年 / 6卷 / 11期

基金：

加拿大自然科学与工程研究理事会; 加拿大健康研究院; 加拿大创新基金会;

关键词：

REDUCTION REACTION; N-X; CARBON; IRON; PERFORMANCE; SITES; CATALYSTS; TEMPLATE; BOOST;

D O I：

10.1039/c7ta08746b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The fabrication of carbon-based electrocatalysts that are highly active and stable as well as with plenty of pores for mass transport is essential for high-performance metal-air batteries. Herein, a new simple route involving sulfur (S) as a "promoter" was developed to achieve a litchi-like porous Fe/N/C catalyst with abundant FeNx species. The obtained electrocatalyst exhibits a large surface area with a high pore volume and shows high activity for oxygen reduction. Moreover, a Zn-air battery device adopting this S-promoted litchi-like Fe/N/C catalyst shows superior power density (double that of the untreated counterpart).

引用

页码：4605 / 4610

页数：6

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