Journal
IONICS
Volume 28, Issue 1, Pages 283-293Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-021-04304-6
Keywords
Zn3V2O7(OH)(2); H2O; Zinc-ion battery; Cathode material; Electrochemical performance
Funding
- start-up foundation of postdoctoral innovation and practice base of Anyang Institute of Technology
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The study successfully synthesized Zn-3(OH)(2)V2O7·2H2O using a hydrothermal method and applied it as a cathode material for zinc-ion batteries. Through experimental optimization, the best electrochemical performance was achieved with zinc nitrate hexahydrate as the zinc source, synthesis temperature of 160 degrees Celsius, and synthesis time of 6 hours.
Zn-3(OH)(2)V2O7 center dot 2H(2)O possesses good structural stability because of its particular pattern. It is often used as a cathode material for lithium-ion batteries and photocatalytic material but is rarely practiced for zinc-ion batteries. This paper synthesized Zn-3(OH)(2)V2O7 center dot 2H(2)O by a hydrothermal method and applied it as cathode material for zinc-ion batteries. Synthesis experiments and electrochemical performance tests were carried out to optimize the best zinc source, synthesis temperature, and time. According to the analysis results, the cathode material with Zn(NO3) (2)center dot 6H(2)O as the zinc source, synthesis temperature of 160 celcius, and synthesis time of 6 h has the best electrochemical performance. Physical characterization was carried out through XRD, SEM, EDS, XPS, TEM, and FT-IR to study the microstructure and element composition of the material. The analysis of the characterization results shows that the synthesized material is hexagonal and the composition is highly consistent with the standard Zn3V2O7(OH)(2)center dot H2O material.
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