首页|Keplerate polyoxomolybdate nanoball mediated controllable preparation of metal-doped molybdenum disulfide for electrocatalytic hydrogen evolution in acidic and alkaline media

Keplerate polyoxomolybdate nanoball mediated controllable preparation of metal-doped molybdenum disulfide for electrocatalytic hydrogen evolution in acidic and alkaline media

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Rationally designed novel cost-effective hydrogen evolution reaction(HER)electrocatalysts with con-trolled surface composition and advanced structural superiority is extremely critical to optimize the HER performance.Polyoxometalates(POMs)with structural diversity and adjustable element composi-tions represent a promising precursor for rational design and preparation of HER electrocatalysts.Herein,a series of transition metal-doped MoS2 materials with different surface engineered structures(Fe,Cr,V doping and S vacancies)(M-MoS2/CC,M=Fe,Cr and V)were fabricated by a simple hydrothermal-vulcanization strategy using Keplerate polyoxomolybdate nanoball({Mo72Fe30},{Mo72Cr30},{Mo72V30},{Mo132})as precursors.The enlarged interlayer spacing as well as the integration of homogeneous transi-tion metal doping and abundant sulfur vacancies endows prepared M-MoS2/CC with superior HER elec-trocatalytic performance and excellent long-term working stability in both acidic and alkaline media.The optimized Fe-MoS2/CC afford current densities of 10 and 50mA/cm2 at overpotentials of 188/272mV and 194/394mV in 0.5mol/L H2SO4 and 1.0mol/L KOH aqueous solution,respectively,outperforming most of reported typical transition metal sulfide-based catalysts.This work represents an important breakthrough for POMs-mediated highly efficient transition metal sulfide-based HER electrocatalysts with wide range pH activity and may provide new options for the rational design of promising HER electrocatalysts and beyond.

PolyoxometalateElectrocatalyticHydrogen evolution reactionDopingMoS2

Ping Wang、Ting Wang、Ming Xu、Ze Gao、Hongyu Li、Bowen Li、Yuqi Wang、Chaoqun Qu、Ming Feng

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Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education,Jilin Normal University,Changchun 130103,China

School of Science,Changchun University of Science and Technology,Changchun 130022,China

National Natural science Foundation of ChinaNational Natural science Foundation of ChinaNational Natural science Foundation of ChinaProgram for the Development of Science and Technology of Jilin ProvinceProgram for the Development of Science and Technology of Jilin Province

52171210219781102220109720220201130GXYDZJ202201ZYTS313

2024

10.1016/j.cclet.2023.108930

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(7)