期刊
ELECTROCHIMICA ACTA
卷 257, 期 -, 页码 73-81出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.09.175
关键词
Polyaniline; N- and O-enriched high surface area hierarchical porous carbons; Oxygen reduction reaction; Electrocatalyst
资金
- National Natural Science Foundation of China [21476178, 11647131]
- Ministry of Education of China [20130143130001]
- Open Foundation Hubei Key Laboratory of Fuel Cells of Wuhan University of Technology [2015FCJ001]
For promoting the development of fuel cells and metal-air batteries, it is imperative to replace rare and expensive precious-metal catalysts with sustainable catalysts composed of earth-abundant elements. Herein, we reported the preparation of polyaniline derived N- and O-enriched high surface area hierarchical porous carbon catalysts that can be regarded as metal-free catalysts for oxygen reduction reaction (ORR). Using perchloric acid (HClO4) as oxidant and pore-forming agent, the N- and O-enriched high surface area hierarchical porous carbon catalysts were fabricated by electrochemical polymerization of aniline, followed by high temperature carbonization of the resulting polyaniline (PANI) precursors. The obtained carbon catalysts exhibited excellent catalytic activity for ORR with high ORR onset potential and high kinetic current density, and good electrochemical stability. These superior electrochemical properties of the N- and O-enriched high surface area hierarchical porous carbon catalysts were closely related to their high surface area and high content of pyridinic nitrogen and graphitic nitrogen. (C) 2017 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据