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Self‐assembly Mesoporous FeP Film with High Porosity for Efficient Hydrogen Evolution Reaction
Author(s) -
Zhang Cong,
Xia Maosheng S.,
Liu Zhipeng P.,
Huang Guoqing Q.,
Yuan Shisheng S.,
Ai Jing,
Li Nan,
Li Xiaotian T.
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.202000123
Subject(s) - tafel equation , overpotential , materials science , mesoporous material , porosity , chemical engineering , phosphide , electrocatalyst , electrolysis , noble metal , nanoparticle , catalysis , water splitting , nanotechnology , electrode , metal , composite material , chemistry , electrochemistry , photocatalysis , metallurgy , organic chemistry , electrolyte , engineering
Exploring efficient noble metal‐free electrocatalysts is of significance for water electrolysis. In this work, we fabricated a high‐efficiency self‐supporting electrode with mesoporous FeP film coated on carbon cloth (meso‐FeP film/CC) for the hydrogen evolution reaction (HER). Compared with nanoparticle‐stacked disordered porous structure, the ordered mesoporous iron phosphide film exhibits high porosity as high as 2.3×10 17 site per mg, as well as small pore size and uniform pore distribution, which enables the exposure of abundant active sites. Moreover, the self‐supporting structure with enhanced conductivity further optimizes its electrocatalytic performance towards the HER. As a result, the meso‐FeP film/CC displays a low overpotential (65 mV at current density of 10 mA cm −2 ) and a small Tafel slope (44 mV dec −1 ) in acid condition, which is competitive among most of noble‐metal free electrocatalysts.