期刊
CARBON
卷 151, 期 -, 页码 46-52出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2019.05.042
关键词
-
资金
- National Natural Science Foundation of China (NSFC) [U1508201]
Efficient CO2 electroreduction over nitrogen-doped carbon catalysts has aroused tremendous interests over the past decades. However, it still remains a great challenge to develop a carbon-based electrocatalysts with high efficiency. Herein, we develop a facile and scalable ammonia etching strategy to synthesis nitrogen-doped porous carbon from earth-abundant coal as an efficient metal-free catalyst for CO2 electroreduction. Benefitting from the synergistic effect of well-developed porous nanostructure, abundant exposed nitrogen defects and proper ratio of pyridinic-N to pyrrolic-N, the coal-derived nitrogen-doped porous carbon enables efficient production of CO with a high Faradaic efficiency (92%) at -0.6 V versus the reversible hydrogen electrode. The simplification of the synthesis may shed a new light on the design of N-doped porous carbon electrocatalysts. (C) 2019 Elsevier Ltd. All rights reserved.
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