Regulation on electronic structure of VN-based materials for enhanced supercapacitor performances

Zhang Dongbin; Chang Zhi; Teng Aijun; Liu Tianhao; Dai Yu; Peng Xianzhu; Du Guangchao; Kang Ju

doi:10.7513/j.issn.1004-7638.2022.05.007

Volume 43 Issue 5

Nov. 2022

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Zhang Dongbin, Chang Zhi, Teng Aijun, Liu Tianhao, Dai Yu, Peng Xianzhu, Du Guangchao, Kang Ju. Regulation on electronic structure of VN-based materials for enhanced supercapacitor performances[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 45-51. doi: 10.7513/j.issn.1004-7638.2022.05.007

Citation:

Zhang Dongbin, Chang Zhi, Teng Aijun, Liu Tianhao, Dai Yu, Peng Xianzhu, Du Guangchao, Kang Ju. Regulation on electronic structure of VN-based materials for enhanced supercapacitor performances[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 45-51. doi: 10.7513/j.issn.1004-7638.2022.05.007

Citation:

Zhang Dongbin, Chang Zhi, Teng Aijun, Liu Tianhao, Dai Yu, Peng Xianzhu, Du Guangchao, Kang Ju. Regulation on electronic structure of VN-based materials for enhanced supercapacitor performances[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 45-51. doi: 10.7513/j.issn.1004-7638.2022.05.007

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Regulation on electronic structure of VN-based materials for enhanced supercapacitor performances

doi: 10.7513/j.issn.1004-7638.2022.05.007

1.
Ansteel Beijing Research Institute Co., Ltd., Beijing 102211, China
2.
Pangang Group Vanadium & Titanium Resources Co., Ltd., Panzhihua 617000, Sichuan, China
3.
Pangang Group Research Institute Co., Ltd., State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China
4.
Beijing Institute of Petrochemical Technology, Beijing Key Laboratory of Key Technologies and Equipment for Deepwater Oil and Gas Pipelines, Beijing 102617, China

Received Date: 2022-04-26
Available Online: 2022-11-01
Publish Date: 2022-11-01

Abstract

Abstract

In this paper, a method to improve the electrochemical performances of VN-based materials by electronic structure regulation is proposed. By Fe doping, the electronic structure of VN-based materials was modified for better electrochemical performances. XRD, HRTEM, XPS and other methods were used to characterize the effect of Fe on the microstructure and electronic structure of VN-based materials. Combined with the DFT calculation, it shows that the electron/ion transport capacity of VN-based materials is changed by introduction of Fe element, which endows the as-prepared Fe-VN material with excellent supercapacitor performances. The specific capacity is 343.75 F/g at a current density of 1 A/g, and 85% of the initial capacity can be retained after 1000 charge-discharge cycles.
- VN-based materials,
- electronic structure,
- doping,
- Fe,
- supercapacitor

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References(9)

References

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