首页|Mitigating the dissolution of V2O5 in aqueous ZnSO4 electrolyte through Ti-doping for zinc storage
Mitigating the dissolution of V2O5 in aqueous ZnSO4 electrolyte through Ti-doping for zinc storage
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Aqueous zinc-ion batteries(AZIBs)have become a hotspot for electrochemical energy storage owing to the high safety,low cost,environmental friendliness,and favorable rate performance.However,the seri-ous dissolution of cathode materials in aqueous electrolytes would lead to poor cyclability,which should be addressed before commercialization.Herein,we designed a Ti-doped V2O5 with yolk-shell microspher-ical structure for AZIBs.The Ti doping stabilizes the crystal structure and relieves the dissolution of V2O5 in aqueous ZnSO4 electrolyte.The optimized sample,Ti0.2V18O4.9,delivers a high capacity(355 mAh/g at 0.05 A/g)as well as good capacity retention(89％after 2500 cycles at 1.0 A/g).This work provides an ef-fective strategy to mitigate the dissolution of cathode material in aqueous ZnSO4 electrolyte for cyclability enhancement.
Hubei Longzhong Laboratory,Wuhan University of Technology(Xiangyang Demonstration Zone),Xiangyang 441000,China
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China
School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,China
Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory,Xianhu Hydrogen Valley,Foshan 528200,China
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国家自然科学基金Independent Innovation Project of Hubei Longzhong LaboratoryGuangdong Basic and Applied Basic Research FoundationFoshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory
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