Nitrogen and Sulfur Codoped Graphite Foam as a Self-Supported Metal-Free Electrocatalytic Electrode for Water Oxidation

被引：217

作者：

Yu, Xiaowen ^{[1
]}

Zhang, Miao ^{[1
]}

Chen, Ji ^{[1
]}

Li, Yingru ^{[1
]}

Shi, Gaoquan ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

来源：

ADVANCED ENERGY MATERIALS | 2016年 / 6卷 / 02期

基金：

中国国家自然科学基金;

关键词：

OXYGEN EVOLUTION; DOPED GRAPHENE; REDUCTION; OXIDE; CATALYSTS; EXFOLIATION; COMPOSITES; STORAGE; HYBRID; PAPER;

D O I：

10.1002/aenm.201501492

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 oxidation of water to produce oxygen gas is related to a variety of energy storage systems. Thus, the development of efficient, cheap, durable, and scalable electrocatalysts for oxygen evolution reaction (OER) is of great importance. Here, a high-performance OER catalyst, nitrogen and sulfur codoped graphite foam (NSGF) is reported. This NSGF is prepared from commercial graphite foil and directly applied as an electrocatalytic electrode without using a current collector and a polymeric binder. It exhibits an extremely low overpotential of 0.380 V to reach a current density of 10 mA cm(-2) and shows fast kinetics with a small Tafel slope of 96 mV dec(-1) in 0.1 M KOH. This electrocatalytic performance is superior or comparable to those of previously reported metal-free OER catalysts.

引用

页数：9

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