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
收藏
页码：4605 / 4610
页数：6
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