Journal
IONICS
Volume 27, Issue 11, Pages 4793-4800Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-021-04255-y
Keywords
Zinc ion batteries; Heterostructure; Vanadium oxide; Zinc ions storage
Funding
- National Natural Science Foundation of China [52062030]
- Found of the State Key Laboratory of Advance Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology [SKLAB02019008]
- Hongliu Youth Fund of Lanzhou University of Technology
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By tightly attaching V3O7 to the surface of graphene oxide through a hydrothermal reaction, a V3O7/GO heterostructure was achieved, resulting in improved cycle stability and rate capability compared to V3O7.
Aqueous zinc ion batteries (ZIBs) are widely researched due to the low-cost and intrinsic safety. However, the rate capability and specific capacity of ZIBs is limited due to the dissolution and structural collapse of cathode materials. It is crucial to construct stable cathode materials to promote rate capability and cycle stability of ZIBs. In this paper, The V3O7 was tightly attached to the surface of graphene oxide (GO) by a hydrothermal reaction and a V3O7/GO heterostructure was successfully achieved. The GO could increase structural stability, enhance electrical conductivity, and expand specific surface area of V3O7. Therefore, the V3O7/GO with a heterostructure exhibits an improved cycle stability and rate capability compared with V3O7. It displayed a specific capacity of 275.6 mA h g(-1) at a current density of 1.0 A g(-1). The study paves the way for promoting the Zn2+ storage performance of vanadium oxide and developing stable cathode materials of ZIBs.
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