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Hierarchical MoP Hollow Nanospheres Anchored on a N,P,S‐Doped Porous Carbon Matrix as Efficient Electrocatalysts for the Hydrogen Evolution Reaction
Author(s) -
Yang Wang,
Tian Jingbo,
Hou Liqiang,
Deng Bijian,
Wang Shuo,
Li Rui,
Yang Fan,
Li Yongfeng
Publication year - 2019
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201902043
Subject(s) - overpotential , electrocatalyst , tafel equation , heteroatom , materials science , carbon fibers , chemical engineering , electron transfer , catalysis , nanotechnology , porosity , chemistry , electrode , electrochemistry , organic chemistry , composite material , ring (chemistry) , composite number , engineering
Developing efficient, nonprecious, and durable electrocatalysts with favorable nanostructures is a persistent challenge yet is significant for the hydrogen evolution reaction (HER). Herein, for the first time, a rationally designed strategy is reported for the synthesis of hierarchical hollow MoP nanospheres anchored on N,P,S co‐doped porous carbon ( hs ‐MoP/NPSC). Importantly, the porous shell of the hollow nanosphere is constructed of a number of interwoven MoP subunits, which is beneficial for exposing surface active sites as much as possible and promoting the mass transport during the HER process. In addition, the heteroatom‐enriched porous carbon networks can further reduce the electron/ion transfer resistance. As expected, the hs ‐MoP/NPSC electrocatalyst exhibits an encouraging HER activity with a low overpotential of only 70 mV at a current density of 10 mA cm −2 , a small Tafel slope, and long‐term durability in alkaline media, outperforming most of reported Pt‐free MoP‐based electrocatalysts to date. This present work not only develops a highly efficient electrocatalyst for HER but also opens up opportunities to engineer novel architectures for various applications.