Electrochemically exfoliating graphite into N-doped graphene and its use as a high efficient electrocatalyst for oxygen reduction reaction |
| |
Authors: | Lei Chao Yong Qin Yang Liu Yong Kong Fuqiang Chu |
| |
Affiliation: | 1.Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering,Changzhou University,Changzhou,China |
| |
Abstract: | N-doped graphene has been extensively explored because of their intriguing properties. However, most of the conventional heat-processed N-doped graphene (HNG) suffer from the poor hydrophilic property and low electric conductivity when using electrode materials. Herein, we present a facile solution-processed strategy to fabricate N-doped graphene through electrochemical exfoliation of graphite in inorganic electrolyte solution. The resulting electrochemically exfoliated N-doped graphene (ENG) has high level of nitrogen (7.9 at.%) and oxygen (16.5 at.%), moreover, excellent electric conductivity (19 s cm?1). As a binder-free electrode material for oxygen reduction reaction (ORR), ENG exhibits much better electroactivity than HNG and electrochemically exfoliated graphene (EG), moreover, much better methanol tolerance and long-term durability than that commercial Pt/C catalyst. The results provide new sights into scalable production of noble metal-free catalyst towards ORR. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|