In Situ Activating Strategy to Significantly Boost Oxygen Electrocatalysis of Commercial Carbon Cloth for Flexible and Rechargeable Zn-Air Batteries

被引：109

作者：

Zhao, Zhe ^{[1
]}

Yuan, Zhongke ^{[1
]}

Fang, Zhengsong ^{[1
]}

Jian, Junhua ^{[1
]}

Li, Jing ^{[1
]}

Yang, Meijia ^{[1
]}

Mo, Chunshao ^{[1
]}

Zhang, You ^{[1
]}

Hu, Xuanhe ^{[1
]}

Li, Ping ^{[1
]}

Wang, Shuangyin ^{[2
]}

Hong, Wei ^{[1
]}

Zheng, Zhikun ^{[1
]}

Ouyang, Gangfeng ^{[3
]}

Chen, Xudong ^{[1
]}

Yu, Dingshan ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Chem, Key Lab Polymer Composite & Funct Mat,Minist Educ, Key Lab High Performance Polymer Based Composites, Guangzhou 510275, Guangdong, Peoples R China

[2] Hunan Univ, Coll Chem & Chem Engn, Changsha 410082, Hunan, Peoples R China

[3] Sun Yat Sen Univ, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China

来源：

ADVANCED SCIENCE | 2018年 / 5卷 / 12期

关键词：

bifunctional oxygen electrodes; flexible Zn-air batteries; heteroatom doping; porous carbon; rechargeable Zn-air batteries; BIFUNCTIONAL CATHODE; EFFICIENT; CATALYSTS; ELECTRODES; REDUCTION; GRAPHENE;

D O I：

10.1002/advs.201800760

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An in situ strategy to simultaneously boost oxygen reduction and oxygen evolution (ORR/OER) activities of commercial carbon textiles is reported and the direct use of such ubiquitous raw material as low-cost, efficient, robust, self-supporting, and bifunctional air electrodes in rechargeable Zn-air batteries is demonstrated. This strategy not only furnishes carbon textiles with a large surface area and hierarchical meso-microporosity, but also enables efficient dual-doping of N and S into carbon skeletons while retaining high conductivity and stable monolithic structures. Thus, although original carbon textile has rather poor catalytic activity, the activated textiles without loading other active materials yield effective ORR/OER bifunctionality and stability with a much lower reversible overpotential (0.87 V) than those of Pt/C (1.10 V) and RuO2 (1.02 V) and many reported metal-free bifunctional catalysts. Importantly, they can concurrently function as current collectors and as ORR/OER catalysts for rechargeable aqueous and flexible solid-state Zn-air batteries, showing excellent cell performance, long lifetime, and high flexibility.

引用

页数：8

共 41 条

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