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- Title
Ni<sub>2</sub>P Interlayer and Mn Doping Synergistically Expedite the Hydrogen Evolution Reaction Kinetics of Co<sub>2</sub>P.
- Authors
Du, Yunmei; Wang, Wensi; Zhao, Huimin; Liu, Yanru; Li, Shaoxiang; Wang, Lei; Liu, Bin
- Abstract
Transition metal phosphide is regarded as one of the most promising candidates to replace noble‐metal hydrogen evolution reaction (HER) electrocatalysts. Nevertheless, the controllable design and synthesis of transition metal phosphide electrocatalysts with efficient and stable electrochemical performance are still very challenging. Herein, a novel hierarchical HER electrocatalyst consisting of three‐dimensional (3D) coral‐like Mn‐doped Co2P@an intermediate layer of Ni2P generated in situ by phosphorization on Ni foam (MnCoP/NiP/NF) is reported. Notably, both the incorporation of Mn and introduction of the Ni2P interlayer promote Co atoms to carry more electrons, which is beneficial to reduce the force of the Co−H bond and optimize the adsorption energy of hydrogen intermediate (|ΔGH*|), thereby making MnCoP/NiP/NF exhibit outstanding HER performance with onset overpotential and Tafel slope as low as 31.2 mV and 61 mV dec−1, respectively, in 1 m KOH electrolyte.
- Subjects
ELECTROCATALYSTS; CHEMICAL kinetics; OXYGEN evolution reactions; HYDROGEN evolution reactions; HYDROGEN as fuel; TRANSITION metals
- Publication
Chemistry - A European Journal, 2021, Vol 27, Issue 10, p3536
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.202005162