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Author:

Zhu, Mingyuan (Zhu, Mingyuan.) | Yu, Lijun (Yu, Lijun.) | Sha, Simiao (Sha, Simiao.) | Ge, Riyue (Ge, Riyue.) | Cheng, Chi (Cheng, Chi.) | Dai, Liming (Dai, Liming.) | Li, Sean (Li, Sean.) | Liu, Bin (Liu, Bin.) | Qu, Zhixue (Qu, Zhixue.) | Li, Wenxian (Li, Wenxian.)

Indexed by:

EI Scopus SCIE

Abstract:

Energy consumption associated with the catalysts contributes partly to the high ohmic resistance arising from the low conductivity of the catalyst and poor charge transfer between nanoparticles, which has been difficult to study due to the complicated nanostructured framework of the catalysts. We constructed a novel heterostructure electrocatalyst (MoS2/MoP@NC) composed of nanosized MoS2/MoP heterostructures anchoring on hierarchical N-doped carbon for smoothing electron transfer in boosting hydrogen evolution reaction (HER). With the merits of large surface area, rapid charge transfer, and optimized electronic structure induced by charge transfer across the sufficient interface, the optimal MoS2/MoP@NC (MoSP) catalyst shows a competitive overpotential of 140 (0.5 M H2SO4), 76 (1.0 M KOH), and 103 mV (0.5 M NaCl &1.0 M KOH) at 10 mA cm(-2), respectively. Raman experiment and Density functional theory (DFT) calculations reveal the formation of Mo-S-Mo bonds between MoS2 and MoP, which favor enhancing the Femi level to facilitate the electron transfer, therefore regulating the electronic structure for the optimization of adsorption energy of hydrogen intermediate. Based on the experimental results, we constructed an energy consumption model of catalysts, where energy consumption comes from three aspects. The heterostructure design decreases the energy consumption of the catalysts greatly compared to the single-phase Mo-based catalyst of MoS2 (78.0%) and MoP (45.2%) in alkaline electrolytes.

Keyword:

Charge transfer Heterostructure Hydrogen evolution reaction Decreased energy consumption

Author Community:

  • [ 1 ] [Zhu, Mingyuan]Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China
  • [ 2 ] [Yu, Lijun]Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China
  • [ 3 ] [Sha, Simiao]Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China
  • [ 4 ] [Liu, Bin]Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China
  • [ 5 ] [Ge, Riyue]Hong Kong Polytech Univ, Sch Fash & Text, Kowloon, Hung Hom, Hong Kong 999077, Peoples R China
  • [ 6 ] [Cheng, Chi]Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia
  • [ 7 ] [Dai, Liming]Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia
  • [ 8 ] [Li, Wenxian]Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia
  • [ 9 ] [Dai, Liming]Univ New South Wales, Australian Res Council Ctr Excellence Carbon Sci &, Sydney, NSW 2052, Australia
  • [ 10 ] [Li, Wenxian]Univ New South Wales, Australian Res Council Ctr Excellence Carbon Sci &, Sydney, NSW 2052, Australia
  • [ 11 ] [Li, Sean]Univ New South Wales, UNSW Mat & Mfg Futures Inst, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia
  • [ 12 ] [Li, Wenxian]Univ New South Wales, UNSW Mat & Mfg Futures Inst, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia
  • [ 13 ] [Qu, Zhixue]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Liu, Bin]Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China;;[Li, Wenxian]Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia;;[Qu, Zhixue]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China;;

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Source :

SUSTAINABLE MATERIALS AND TECHNOLOGIES

ISSN: 2214-9937

Year: 2024

Volume: 41

9 . 6 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 4

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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