Solvothermal synthesis of Li3VO4: Morphology control and electrochemical performance as anode for lithium-ion batteries. (24th August 2017)

• Record Type: Journal Article
• Authors: Yang, Guang; Feng, Jianyong; Zhang, Bowei; Aravindan, Vanchiappan; Peng, Dongdong; Cao, Xun; Yu, Hao; Madhavi, Srinivasan; Huang, Yizhong
• Is Part Of: International journal of hydrogen energy. Volume 42:Number 34(2017)
• Page Start: 22167
• Page End: 22174
• Publication Date: 2017-08-24
• Subjects: Solvothermal synthesis -- Li3VO4 -- Morphology -- Capacity -- Lithium-ion batteries; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2017.02.186
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: In this work, orthorhombic Li3 VO4 with the controllable morphology has been synthesized by tuning the solvent composition (volume ratios of ethanol to deionized water) in a solvothermal approach. The resulting Li3 VO4 samples with various morphologies (coral-shaped particle, self-assembled hierarchical microsphere, cube-like particle, sheet-like structure) show then different electrochemical performances when employed as anodes for Li-ion battery applications. The Li3 VO4 with self-assembled hierarchical microsphere morphology (volume ratio of ethanol to deionized water at 15:15) exhibits the best electrochemical performance. The subsequent carbon coating process on microsphere samples is claimed to significantly improve both the capacities at both low (350–430 mAh g −1 at 100 mA g −1 ) and high current (180–350 mAh g −1 at 2 A g −1 ) conditions, and their excellent cycling stability. Highlights: Preparation of orthorhombic Li3 VO4 with controllable morphology. Dependent of electrochemical performance on the different morphologies of Li3 VO4 . Li3 VO4 with hierarchical microsphere morphology provides the best performance. Carbon coating on Li3 VO4 significantly improves the capacity and cycling stability.