期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 38, 页码 11559-11564出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201704911
关键词
electrocatalysts; hydrogen evolution reaction; N,P dual-doped carbon; ruthenium diphosphide
资金
- National Natural Science Foundation of China [51372186, 51672204]
- Fundamental Research Funds for the Central Universities [2016-YB-001]
Highly active, stable, and cheap Pt-free catalysts for the hydrogen evolution reaction (HER) are under increasing demand for future energy conversion systems. However, developing HER electrocatalysts with Pt-like activity that can function at all pH values still remains as a great challenge. Herein, based on our theoretical predictions, we design and synthesize a novel N, P dual-doped carbon-encapsulated ruthenium diphosphide (RuP2@NPC) nanoparticle electrocatalyst for HER. Electrochemical tests reveal that, compared with the Pt/C catalyst, RuP2@NPC not only has Pt-like HER activity with small overpotentials at 10 mA cm(-2) (38 mV in 0.5m H2SO4, 57 mV in 1.0 M PBS and 52 mV in 1.0 m KOH), but demonstrates superior stability at all pH values, as well as 100% Faradaic yields. Therefore, this work adds to the growing family of transition-metal phosphides/heteroatomdoped carbon heterostructures with advanced performance in HER.
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