A CoMoO4-Co2Mo3O8 heterostructure with valence-rich molybdenum for a high-performance hydrogen evolution reaction in alkaline solution

Zheng Liu; Changhong Zhan; Linkai Peng; Yang Cao; Yong Chen; Shujiang Ding; Chunhui Xiao; Xiaoyong Lai; Jianwei Li; Songrui Wei; Jieqiong Wang; Jinchun Tu

doi:10.1039/c9ta04180j

A CoMoO₄-Co₂Mo₃O₈ heterostructure with valence-rich molybdenum for a high-performance hydrogen evolution reaction in alkaline solution

Zheng Liu, Changhong Zhan, Linkai Peng, Yang Cao, Yong Chen, Shujiang Ding, Chunhui Xiao, Xiaoyong Lai, Jianwei Li, Songrui Wei, Jieqiong Wang^*, Jinchun Tu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

58 Citations (Scopus)

Abstract

The hydrogen evolution reaction (HER) is a promising clean and renewable energy source. Thus, efficient and inexpensive electrocatalysts for the HER have attracted considerable attention. Here, we report a two-step method for the synthesis of a unique CoMoO₄-Co₂Mo₃O₈ heterostructure. The CoMoO₄-Co₂Mo₃O₈ heterostructure exhibited superior HER activity that included a low overpotential of 57 mV, a Tafel slope of 55 mV dec^-1 in a 1 M KOH solution, and excellent long-term stability given its high intrinsic activity and superior conductivity. Density functional theory calculations indicated that CoMoO₄ and Co₂Mo₃O₈ synergistically optimized electron distribution to reduce hydrogen adsorption energy and significantly enhance electrocatalytic activity. Our work may provide novel ideas for improving the HER performance of valence-rich transition element oxides.

Original language	English
Pages (from-to)	16761-16769
Number of pages	9
Journal	Journal of Materials Chemistry A
Volume	7
Issue number	28
DOIs	https://doi.org/10.1039/c9ta04180j
Publication status	Published - 2019
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 The Royal Society of Chemistry.

ASJC Scopus Subject Areas

General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

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This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1039/c9ta04180j

Cite this

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title = "A CoMoO4-Co2Mo3O8 heterostructure with valence-rich molybdenum for a high-performance hydrogen evolution reaction in alkaline solution",

abstract = "The hydrogen evolution reaction (HER) is a promising clean and renewable energy source. Thus, efficient and inexpensive electrocatalysts for the HER have attracted considerable attention. Here, we report a two-step method for the synthesis of a unique CoMoO4-Co2Mo3O8 heterostructure. The CoMoO4-Co2Mo3O8 heterostructure exhibited superior HER activity that included a low overpotential of 57 mV, a Tafel slope of 55 mV dec-1 in a 1 M KOH solution, and excellent long-term stability given its high intrinsic activity and superior conductivity. Density functional theory calculations indicated that CoMoO4 and Co2Mo3O8 synergistically optimized electron distribution to reduce hydrogen adsorption energy and significantly enhance electrocatalytic activity. Our work may provide novel ideas for improving the HER performance of valence-rich transition element oxides.",

author = "Zheng Liu and Changhong Zhan and Linkai Peng and Yang Cao and Yong Chen and Shujiang Ding and Chunhui Xiao and Xiaoyong Lai and Jianwei Li and Songrui Wei and Jieqiong Wang and Jinchun Tu",

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year = "2019",

doi = "10.1039/c9ta04180j",

language = "English",

volume = "7",

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T1 - A CoMoO4-Co2Mo3O8 heterostructure with valence-rich molybdenum for a high-performance hydrogen evolution reaction in alkaline solution

AU - Liu, Zheng

AU - Zhan, Changhong

AU - Peng, Linkai

AU - Cao, Yang

AU - Chen, Yong

AU - Ding, Shujiang

AU - Xiao, Chunhui

AU - Lai, Xiaoyong

AU - Li, Jianwei

AU - Wei, Songrui

AU - Wang, Jieqiong

AU - Tu, Jinchun

PY - 2019

Y1 - 2019

N2 - The hydrogen evolution reaction (HER) is a promising clean and renewable energy source. Thus, efficient and inexpensive electrocatalysts for the HER have attracted considerable attention. Here, we report a two-step method for the synthesis of a unique CoMoO4-Co2Mo3O8 heterostructure. The CoMoO4-Co2Mo3O8 heterostructure exhibited superior HER activity that included a low overpotential of 57 mV, a Tafel slope of 55 mV dec-1 in a 1 M KOH solution, and excellent long-term stability given its high intrinsic activity and superior conductivity. Density functional theory calculations indicated that CoMoO4 and Co2Mo3O8 synergistically optimized electron distribution to reduce hydrogen adsorption energy and significantly enhance electrocatalytic activity. Our work may provide novel ideas for improving the HER performance of valence-rich transition element oxides.

AB - The hydrogen evolution reaction (HER) is a promising clean and renewable energy source. Thus, efficient and inexpensive electrocatalysts for the HER have attracted considerable attention. Here, we report a two-step method for the synthesis of a unique CoMoO4-Co2Mo3O8 heterostructure. The CoMoO4-Co2Mo3O8 heterostructure exhibited superior HER activity that included a low overpotential of 57 mV, a Tafel slope of 55 mV dec-1 in a 1 M KOH solution, and excellent long-term stability given its high intrinsic activity and superior conductivity. Density functional theory calculations indicated that CoMoO4 and Co2Mo3O8 synergistically optimized electron distribution to reduce hydrogen adsorption energy and significantly enhance electrocatalytic activity. Our work may provide novel ideas for improving the HER performance of valence-rich transition element oxides.

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