Microstructure Modulation of Zn Doped VO<sub>2</sub>(B) Nanorods with Improved Electrochemical Properties towards High Performance Aqueous Batteries

Dewei Liu; Qijie Zhang; Xiaohong Chen; Haiyang Dai; Xuezhen Zhai; Jing Chen; Gaoshang Gong; Cui Shang; Xuzhe Wang

doi:10.3390/batteries8100172

Batteries (Oct 2022)

Microstructure Modulation of Zn Doped VO<sub>2</sub>(B) Nanorods with Improved Electrochemical Properties towards High Performance Aqueous Batteries

Dewei Liu,
Qijie Zhang,
Xiaohong Chen,
Haiyang Dai,
Xuezhen Zhai,
Jing Chen,
Gaoshang Gong,
Cui Shang,
Xuzhe Wang

Affiliations

Dewei Liu: Laboratory of Magnetoelectronic Information, School of Physics and Electronic Engineering, Henan Key Functional Materials, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Qijie Zhang: Laboratory of Magnetoelectronic Information, School of Physics and Electronic Engineering, Henan Key Functional Materials, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Xiaohong Chen: Laboratory of Magnetoelectronic Information, School of Physics and Electronic Engineering, Henan Key Functional Materials, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Haiyang Dai: Laboratory of Magnetoelectronic Information, School of Physics and Electronic Engineering, Henan Key Functional Materials, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Xuezhen Zhai: Laboratory of Magnetoelectronic Information, School of Physics and Electronic Engineering, Henan Key Functional Materials, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Jing Chen: Laboratory of Magnetoelectronic Information, School of Physics and Electronic Engineering, Henan Key Functional Materials, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Gaoshang Gong: Laboratory of Magnetoelectronic Information, School of Physics and Electronic Engineering, Henan Key Functional Materials, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Cui Shang: Laboratory of Magnetoelectronic Information, School of Physics and Electronic Engineering, Henan Key Functional Materials, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Xuzhe Wang: Laboratory of Magnetoelectronic Information, School of Physics and Electronic Engineering, Henan Key Functional Materials, Zhengzhou University of Light Industry, Zhengzhou 450002, China

DOI: https://doi.org/10.3390/batteries8100172
Journal volume & issue: Vol. 8, no. 10
p. 172

Abstract

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Vanadium dioxide with monoclinic structure is theoretically a promising layered cathode material for aqueous metal-ion batteries due to its excellent specific capacity. However, its poor cycling stability limits its application as an electrode material. In this study, a series of Zn-doped VO2 (V1−xZnxO2) nanorods were successfully fabricated by the technology of one-step hydrothermal synthesis. The XRD result indicated that there was a slight lattice distortion caused by doped Zn2+ with a larger ion radius. The positron lifetime spectrum showed that there were vacancy cluster defects in all the samples. The electrochemical measurement demonstrated the enhancement of the specific capacitance of V1−xZnxO2 electrodes compared with the undoped sample. In addition, the discharge capacitance of the sample remained around 86% after 1000 charge/discharge cycles. This work proves that Zn2+ doping is a valid tactic for the application of nano-VO2(B) in energy storage electrode materials.

Published in Batteries

ISSN: 2313-0105 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Production of electric energy or power. Powerplants. Central stations; Technology: Chemical technology: Industrial electrochemistry
Website: http://www.mdpi.com/journal/batteries

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