Facile Synthesis of Hollow V2O5 Microspheres for Lithium-Ion Batteries with Improved Performance

Micro-nanostructured electrode materials are characterized by excellent performance in various secondary batteries. In this study, a facile and green hydrothermal method was developed to prepare amorphous vanadium-based microspheres on a large scale. Hollow V2O5 microspheres were achieved, with cont...

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Published inInorganics Vol. 12; no. 2; p. 37
Main Authors Fei, Hailong, Wu, Peng, He, Liqing, Li, Haiwen
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.02.2024
Subjects
Acids
Alcohol
Aluminum
Amorphous materials
Annealing
Batteries
Carbon
Charge transfer
Controllability
Electrode materials
Electrodes
Electrolytes
Energy storage
hydrothermal
Lithium
Lithium-ion batteries
lithium-ion battery
microsphere
Microspheres
Nickel
Potassium
Rechargeable batteries
Retention
Storage batteries
Synthesis
Vanadium
vanadium acetylacetonate
Vanadium pentoxide
vitamin C
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Summary:Micro-nanostructured electrode materials are characterized by excellent performance in various secondary batteries. In this study, a facile and green hydrothermal method was developed to prepare amorphous vanadium-based microspheres on a large scale. Hollow V2O5 microspheres were achieved, with controllable size, after the calcination of amorphous vanadium-based microspheres and were used as cathode materials for lithium-ion batteries. As the quantity of V2O5 microspheres increased, the electrode performance improved, which was ascribed to the smaller charge transfer impedance. The discharge capacity of hollow V2O5 microspheres could be up to 196.4 mAhg−1 at a current density of 50 mAg−1 between 2.0 and 3.5 V voltage limits. This sheds light on the synthesis and application of spherical electrode materials for energy storage.
ISSN:2304-6740
2304-6740
DOI:10.3390/inorganics12020037