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Self‐Supported CoP Nanoparticle‐Embedded Wood‐Derived Porous Carbon Membrane for Efficient H 2 Evolution in Both Acidic and Basic Solutions
Author(s) -
Min Shixiong,
Deng Wanan,
Li Yanan,
Wang Fang,
Zhang Zhengguo
Publication year - 2020
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202000407
Subject(s) - electrocatalyst , materials science , nanoparticle , chemical engineering , electrochemistry , electrolysis , porosity , carbon fibers , current density , nanotechnology , chemistry , composite material , electrode , composite number , physics , quantum mechanics , engineering , electrolyte
Self‐supported carbon‐based electrocatalysts that possess good structural integrity, high activity, and excellent stability are being extensively pursued for applications in practical electrochemical energy conversion devices. Herein, we report a nature‐inspired and straightforward strategy to fabricate a self‐supported CoP nanoparticle‐embedded wood‐derived porous carbon membrane (CoP@PCM) as a highly efficient and stable electrocatalyst for the hydrogen evolution reaction (HER) in both acidic and basic solutions. Benefitting from the numerous aligned microchannels and high porosity of PCM, as well as the high dispersion of CoP nanoparticles, the as‐fabricated CoP@PCM demonstrates superior electrocatalytic activity for HER, with overpotentials of 155 and 112 mV in 0.5 M H 2 SO 4 and 1.0 M KOH, respectively, at a current density of 10 mA cm −2 . In addition, CoP@PCM also exhibits good durability for HER at a high current density of ∼100 mA cm −2 in both solutions over 8 h of HER electrolysis, showing its great potential as a practical electrocatalyst for large‐scale electricity‐to‐fuel conversion.