Solvothermal synthesis of Li3VO4: Morphology control and electrochemical performance as anode for lithium-ion batteries

被引：18
|
作者：
Yang, Guang [1 ]
Feng, Jianyong [1 ]
Zhang, Bowei [2 ]
Aravindan, Vanchiappan [2 ]
Peng, Dongdong [1 ]
Cao, Xun [1 ]
Yu, Hao [3 ]
Madhavi, Srinivasan [1 ,2 ]
Huang, Yizhong [1 ]
机构：
[1] Nanyang Technol Univ, Sch Mat Sci & Engn, 50 Nanyang Ave, Singapore 639798, Singapore
[2] Nanyang Technol Univ, Energy Res Inst NTU ERI N, Res Techno Pl,50 Nanyang Dr, Singapore 637553, Singapore
[3] Nanyang Technol Univ, Sch Elect & Elect Engn, 50 Nanyang Ave, Singapore 639798, Singapore
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 34期
关键词：
Solvothermal synthesis; Li3VO4; Morphology; Capacity; Lithium-ion batteries; HOLLOW-STRUCTURED LI3VO4; GRAPHENE NANOSHEETS; COMPOSITE ANODE; BINDER-FREE; LONG-LIFE; NANOSTRUCTURES; INSERTION; VANADATE; ENERGY;
D O I：
10.1016/j.ijhydene.2017.02.186
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this work, orthorhombic Li3VO4 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 Li3VO4 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 Li3VO4 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 ri) conditions, and their excellent cycling stability. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：22167 / 22174
页数：8
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