Self-Templated Fabrication of CoO–MoO2 Nanocages for Enhanced Oxygen Evolution

Fenglei Lyu; Yaocai Bai; Zhiwei Li; Wenjing Xu; Qingfa Wang; Jing Mao; Li Wang; Xiangwen Zhang; Yadong Yin

doi:10.1002/adfm.201702324

Self-Templated Fabrication of CoO–MoO₂ Nanocages for Enhanced Oxygen Evolution

Fenglei Lyu
, Yaocai Bai
, Zhiwei Li
, Wenjing Xu
, Qingfa Wang
, Jing Mao
, Li Wang
, Xiangwen Zhang
, Yadong Yin

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

258 Scopus citations

Abstract

Oxygen evolution reaction (OER) plays a key role in energy conversion and storage processes such as water splitting and carbon dioxide reduction. However, the sluggish kinetics caused by insufficient active surface and limited charge transfer hinder OER's wide applications. In this work, a novel self-templating strategy for the fabrication of composite CoO–MoO₂ nanocages with enhanced OER performance is proposed. By designing a nanocage structure and incorporating conductive MoO₂ to promote both mass and charge transfer, high OER activity (η = 312 mV at 10 mA cm⁻²) as well as good stability in the resulting CoO–MoO₂ composite nanostructure can be achieved. This versatile synthetic strategy can also be extended to other metals (such as W) to provide greater opportunities for the controlled fabrication of mixed metal oxide nanostructures for electrochemical applications.

Original language	English
Article number	1702324
Journal	Advanced Functional Materials
Volume	27
Issue number	34
DOIs	https://doi.org/10.1002/adfm.201702324
State	Published - Sep 13 2017
Externally published	Yes

Funding

Y.Y. is grateful for the partial financial support from the U.S. Department of Energy (DE-SC0002247) and the U.S. National Science Foundation (CHE-1308587). Q.W. acknowledges the funding support from the National Natural Science Foundation of China (21203137). F.L. thanks the financial support from the China Scholarship Council. Acknowledgement is also made to the donors of the American Chemical Society Petroleum Research Fund for partial support of this research.

Keywords

ZIF-67
cobalt oxides
molybdenum dioxide
nanocages
oxygen evolution reaction

Access to Document

10.1002/adfm.201702324

Cite this

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title = "Self-Templated Fabrication of CoO–MoO2 Nanocages for Enhanced Oxygen Evolution",

abstract = "Oxygen evolution reaction (OER) plays a key role in energy conversion and storage processes such as water splitting and carbon dioxide reduction. However, the sluggish kinetics caused by insufficient active surface and limited charge transfer hinder OER's wide applications. In this work, a novel self-templating strategy for the fabrication of composite CoO–MoO2 nanocages with enhanced OER performance is proposed. By designing a nanocage structure and incorporating conductive MoO2 to promote both mass and charge transfer, high OER activity (η = 312 mV at 10 mA cm−2) as well as good stability in the resulting CoO–MoO2 composite nanostructure can be achieved. This versatile synthetic strategy can also be extended to other metals (such as W) to provide greater opportunities for the controlled fabrication of mixed metal oxide nanostructures for electrochemical applications.",

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author = "Fenglei Lyu and Yaocai Bai and Zhiwei Li and Wenjing Xu and Qingfa Wang and Jing Mao and Li Wang and Xiangwen Zhang and Yadong Yin",

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AU - Lyu, Fenglei

AU - Bai, Yaocai

AU - Li, Zhiwei

AU - Xu, Wenjing

AU - Wang, Qingfa

AU - Mao, Jing

AU - Wang, Li

AU - Zhang, Xiangwen

AU - Yin, Yadong

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AB - Oxygen evolution reaction (OER) plays a key role in energy conversion and storage processes such as water splitting and carbon dioxide reduction. However, the sluggish kinetics caused by insufficient active surface and limited charge transfer hinder OER's wide applications. In this work, a novel self-templating strategy for the fabrication of composite CoO–MoO2 nanocages with enhanced OER performance is proposed. By designing a nanocage structure and incorporating conductive MoO2 to promote both mass and charge transfer, high OER activity (η = 312 mV at 10 mA cm−2) as well as good stability in the resulting CoO–MoO2 composite nanostructure can be achieved. This versatile synthetic strategy can also be extended to other metals (such as W) to provide greater opportunities for the controlled fabrication of mixed metal oxide nanostructures for electrochemical applications.

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