文献类型：期刊文献

英文题名：Nitrogen-Doped Porous Carbon Nanosheets Derived from Coal Tar Pitch as an Efficient Oxygen-Reduction Catalyst

作者：Yu, Dai[1]; Zhou, Lihui[1]; Tang, Jing[1]; Li, Jinxia[1]; Hu, Jun[1]; Peng, Changjun[1]; Liu, Honglai[1]

机构：[1] School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2017

卷号：56

期号：31

起止页码：8880

外文期刊名：Industrial and Engineering Chemistry Research

收录：EI(收录号：20173404070759)

语种：英文

外文关键词：Catalysts - Nitrogen - Porous materials - Carbon - Nanosheets - Oxygen - Coal tar - Coal - Molecular weight - Methanol fuels - Electrolytic reduction - Iron compounds - Doping (additives)

摘要：High value-added processing and manufacturing of coal tar pitch (CTP), an abundant and cheap byproduct of the coal industry, is a crucial issue worldwide. Herein, novel nitrogen-doped porous carbon nanosheets (N-PCN) were fabricated by selecting CTP and ferric chloride (FeCl3) as the carbonaceous source and mild activating agent, respectively. Due to the synergistic effects of the unique flaky graphitic structure, hierarchical porosity, high nitrogen-doping contents, and trace of Fe-containing sites, N-PCN exhibited excellent oxygen-reduction (ORR) electrocatalytic activity in alkaline medium. Linear sweep voltammetry (LSV) testing results for N-PCN showed that the diffusion-limited current density was as high as 5.8 mA cm-2 and the half-wave potential was 0.85 V (vs RHE), both better than commercial 20 wt % Pt/C. Moreover, N-PCN showed an ideal methanol tolerance and catalytic stability, indicating its potential application as cathode catalysts in direct methanol fuel cells (DMFCs). ? 2017 American Chemical Society.