RuP2 -Based Catalysts with Platinum-like Activity and Higher Durability for the Hydrogen Evolution Reaction at All pH Values.
作者： Zonghua Pu , Ibrahim Saana Amiinu , Zongkui Kou , Wenqiang Li , Shichun Mu
关键词:
摘要: Highly active, stable and cheap Pt-free catalysts toward hydrogen evolution reaction (HER) are under increasing demand for future energy conversion systems. However, developing pH-universal 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 first design synthesize novel N,P dual-doped carbon-encapsulated ruthenium diphosphide (RuP2@NPC) nanoparticle electrocatalyst HER. Electrochemical tests reveal that, compared the Pt/C catalyst, RuP2@NPC not only possesses small overpotentials 10 mA cm-2 (38 mV in 0.5 M H2SO4, 57 1.0 PBS 52 KOH), but demonstrates superior stability values, well 100 % Faradaic yields. Therefore, this work represents an important addition to growing family of transition metal phosphides/heteroatom-doped carbon heterostructures advanced performance beyond.
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