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High N-content holey few-layered graphene electrocatalysts: Scalable solvent-less production

journal contribution
posted on 28.01.2015, 00:00 authored by Dan LiuDan Liu, Weiwei LeiWeiwei Lei, D Portehault, Alex QinAlex Qin, Ying (Ian) ChenYing (Ian) Chen
Few layered nitrogen doped graphene (NG) attracts great interest in energy storage and conversion applications due to its electronic and catalytic properties. However, its bulk production cannot be envisioned by the current synthetic methods. Here we report a facile, solvent-less, low cost and high yield process for the synthesis of NG. Mechanochemical solid-state exfoliation allows scalable synthesis of holey and crumple nitrogen-doped few-layered graphene from graphite with controlled high concentration N doping and a high surface area through ball-milling. By adjusting the ratio of starting materials, the nitrogen content can be modulated from 4.87 to 17.83 at.%. Furthermore, the types of nitrogen-containing species in few-layered graphene can also be controlled. The resultant NG exhibits superior oxygen reduction reaction performance and more reliable stability than commercial Pt/C catalysts. This journal is

History

Journal

Journal of Materials Chemistry A

Volume

3

Issue

4

Pagination

1682 - 1687

Publisher

Royal Society of Chemistry

ISSN

2050-7488

eISSN

2050-7496

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2015, Royal Society of Chemistry