Ir Nanoparticles Supported on Oxygen-Deficient Vanadium Oxides Prepared by a Polyoxovanadate Precursor for Enhanced Electrocatalytic Hydrogen Evolution

Zhan, Taozhu; Lu, Jiaqiang; Chen, Lihong; Ma, Chunhui; Zhao, Yanchao; Wang, Xingyue; Wang, Jiani; Ling, Qian; Xiao, Zicheng; Wu, Pingfan

doi:10.1021/acs.langmuir.4c00891

Langmuir

2024

DOI: 10.1021/acs.langmuir.4c00891

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Ir Nanoparticles Supported on Oxygen-Deficient Vanadium Oxides Prepared by a Polyoxovanadate Precursor for Enhanced Electrocatalytic Hydrogen Evolution

Taozhu Zhan,

Jiaqiang Lu,

Lihong Chen

et al.

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Cu- and S-Doped Heteropolyacid Co₂Mo₁₀ as Electrocatalysts for Efficient Hydrogen Evolution

Ling,

Wang,

Liu

et al. 2024

Langmuir

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This study employed polyoxometalate Co 2 Mo 10 as a precursor and a two-step method to prepare carbon cloth-supported Cu x S-CoS 2 -MoS 2 materials. The morphology and structure of the materials were characterized using XRD, XPS, SEM, TEM, and other techniques. Interestingly, changes in the reducing gas during the calcination process could adjust the product morphology, thereby altering catalytic activity. Electrochemical results indicated that the Cu x S-CoS 2 -MoS 2 nanomaterials prepared under an NH 3 atmosphere exhibited unique morphology and structural advantages. They demonstrated significant electrocatalytic activity for the hydrogen evolution reaction (HER) in alkaline and acidic electrolytes (overpotentials of 108 and 196 mV at a current density of 10 mA cm −2 , lower than the overpotentials of 143 and 226 mV obtained under a H 2 −Ar atmosphere during calcination) and excellent long-term durability. These findings provide insights and methods for synthesizing multicomponent electrocatalysts with enhanced catalytic performance.

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Cu- and S-Doped Heteropolyacid Co₂Mo₁₀ as Electrocatalysts for Efficient Hydrogen Evolution

Ling,

Wang,

Liu

et al. 2024

Langmuir

View full text Add to dashboard Cite

show abstract

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Ir Nanoparticles Supported on Oxygen-Deficient Vanadium Oxides Prepared by a Polyoxovanadate Precursor for Enhanced Electrocatalytic Hydrogen Evolution

Cited by 1 publication

References 49 publications

Cu- and S-Doped Heteropolyacid Co₂Mo₁₀ as Electrocatalysts for Efficient Hydrogen Evolution

Cu- and S-Doped Heteropolyacid Co₂Mo₁₀ as Electrocatalysts for Efficient Hydrogen Evolution

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Ir Nanoparticles Supported on Oxygen-Deficient Vanadium Oxides Prepared by a Polyoxovanadate Precursor for Enhanced Electrocatalytic Hydrogen Evolution

Cited by 1 publication

References 49 publications

Cu- and S-Doped Heteropolyacid Co2Mo10 as Electrocatalysts for Efficient Hydrogen Evolution

Cu- and S-Doped Heteropolyacid Co2Mo10 as Electrocatalysts for Efficient Hydrogen Evolution

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Product

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Cu- and S-Doped Heteropolyacid Co₂Mo₁₀ as Electrocatalysts for Efficient Hydrogen Evolution

Cu- and S-Doped Heteropolyacid Co₂Mo₁₀ as Electrocatalysts for Efficient Hydrogen Evolution