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Self‐Assembly Approach Towards MoS 2 ‐Embedded Hierarchical Porous Carbons for Enhanced Electrocatalytic Hydrogen Evolution
Author(s) -
Liu Yuping,
Wang Hongxing,
Liu Fengru,
Kang Jialing,
Qiu Feng,
Ke Changchun,
Huang Yu,
Han Sheng,
Zhang Fan,
Zhuang Xiaodong
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202004371
Subject(s) - materials science , mesoporous material , molybdenum disulfide , tafel equation , nanoparticle , chemical engineering , electrocatalyst , catalysis , electrochemistry , nanotechnology , carbon fibers , ionic liquid , electrode , composite number , chemistry , organic chemistry , composite material , engineering
Transition metal‐based nanoparticle‐embedded carbon materials have received increasing attention for constructing next‐generation electrochemical catalysts for energy storage and conversion. However, designing hybrid carbon materials with controllable hierarchical micro/mesoporous structures, excellent dispersion of metal nanoparticles, and multiple heteroatom‐doping remains challenging. Here, a novel pyridinium‐containing ionic hypercrosslinked micellar frameworks (IHMFs) prepared from the core–shell unimicelle of s ‐poly(tert‐butyl acrylate)‐ b ‐poly(4‐bromomethyl) styrene ( s ‐PtBA‐ b ‐PBMS) and linear poly(4‐vinylpyridine) were used as self‐sacrificial templates for confined growth of molybdenum disulfide (MoS 2 ) inside cationic IHMFs through electrostatic interaction. After pyrolysis, MoS 2 ‐anchored nitrogen‐doped porous carbons possessing tunable hierarchical micro/mesoporous structures and favorable distributions of MoS 2 nanoparticles exhibited excellent electrocatalytic activity for hydrogen evolution reaction as well as small Tafel slope of 66.7 mV dec −1 , low onset potential, and excellent cycling stability under acidic condition. Crucially, hierarchical micro/mesoporous structure and high surface area could boost their catalytic hydrogen evolution performance. This approach provides a novel route for preparation of micro/mesoporous hybrid carbon materials with confined transition metal nanoparticles for electrochemical energy conversion.