Capacity-enhanced and kinetic-expedited zinc-ion storage ability in a Zn3V3O8/VO2 cathode enabled by heterostructural design

Linyu Yang; Jikang Jian; Shuying Wang; Shiyu Wang; Ablat Abliz; Fengjun Zhao; Haibing Li; Jiadong Wu; Yujian Wang

doi:10.1039/d2dt02220f

Capacity-enhanced and kinetic-expedited zinc-ion storage ability in a Zn₃V₃O₈/VO₂ cathode enabled by heterostructural design

Dalton Trans. 2022 Oct 18;51(40):15436-15445. doi: 10.1039/d2dt02220f.

Authors

Linyu Yang^{1

2}, Jikang Jian³, Shuying Wang^{1

2}, Shiyu Wang³, Ablat Abliz^{1

2}, Fengjun Zhao⁴, Haibing Li⁵, Jiadong Wu^{1

2}, Yujian Wang^{1

2}

Affiliations

¹ Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi 830046, PR China. yanglinyu0222@sina.com.
² School of Physics and Technology, Xin Jiang University, Urumqi, Xinjiang 830046, China.
³ School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, P.R. China.
⁴ School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, China.
⁵ Xinjiang Uygur Autonomous Region Research Institute of Measurement and Testing, Urumqi 830011, China.

PMID: 36156619
DOI: 10.1039/d2dt02220f

Abstract

Heterostructured double-phase composites are promising electrode candidates for high-performance secondary metal batteries due to their superior capacity and ion transfer kinetics compared with the pristine phase. Herein, a Zn₃V₃O₈/VO₂ (ZVO/VO) heterostructure with abundant phase boundaries was designed as the cathode for aqueous zinc-ion batteries (ZIBs). The preparation method is based on a solid pre-intercalation approach, and the Zn content in the ZVO/VO heterostructure can be precisely controlled. The electrochemical performance of ZVO/VO containing different amounts of Zn, pristine ZVO, and VO phases was compared. ZVO/VO showed superior capacity and cycling stability compared to pristine ZVO and VO. The ZVO/VO heterostructure showed a capacity of 328.4 mA h g^-1 at 0.3 A g^-1 after 200 cycles. The long-term cycling performance of ZVO/VO was evaluated at 3 A g^-1, and it delivered a capacity retention of 90.5% after 1000 cycles. The ion storage mechanism of the ZVO/VO electrode was analyzed by ex situ X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). This work provides a simple strategy for designing vanadium-based heterostructure composites as advanced cathodes for ZIBs.