Self-Assembly Approach Towards MoS2-Embedded Hierarchical Porous Carbons for Enhanced Electrocatalytic Hydrogen Evolution |
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Authors: | Yuping Liu Hongxing Wang Fengru Liu Jialing Kang Dr. Feng Qiu Prof. Changchun Ke Dr. Yu Huang Prof. Sheng Han Prof. Fan Zhang Prof. Xiaodong Zhuang |
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Affiliation: | 1. School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418 P. R. China;2. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240 P. R. China;3. Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ UK;4. Themeso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites &, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240 P. R. China |
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Abstract: | 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 (MoS2) inside cationic IHMFs through electrostatic interaction. After pyrolysis, MoS2-anchored nitrogen-doped porous carbons possessing tunable hierarchical micro/mesoporous structures and favorable distributions of MoS2 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. |
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Keywords: | electrocatalysis hypercrosslinked framework micelle molybdenum disulfide porous carbon |
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