Ni and Co doped yolk-shell type Fe2O3 hollow microspheres as anode materials for lithium-ion batteries
发表时间：2019-03-12
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- 论文类型：
- 期刊论文
- 第一作者：
- Qi, Xinhong
- 合写作者：
- Yan, Zhijun,Liu, Yang,Li, Xiangcun,He, Gaohong,Komarneni, Sridhar
- 发表时间：
- 2018-06-01
- 发表刊物：
- MATERIALS CHEMISTRY AND PHYSICS
- 收录刊物：
- SCIE
- 文献类型：
- J
- 卷号：
- 211
- 页面范围：
- 452-461
- ISSN号：
- 0254-0584
- 关键字：
- Yolk-shell hollow microspheres; Ni and Co doped Fe2O3; Controlled morphologies and compositions; Lithium-ion batteries
- 摘要：
- Ni and Co doped Fe2O3 hollow microspheres of yolk-shell type were designed and synthesized by using resin (RF-COOH) microspheres as hard template and subsequent calcination. Specific morphologies (walnut-like, jingle-bell-like and ball-like) and compositions of Fe2O3 with different amounts of Ni and Co doping were obtained by tuning metal precursor concentration to optimize their performance in lithium-ion battery application. When Ni and Co doped Fe2O3 hollow microspheres were used as anode materials for lithium-ion batteries, jingle-bell-like and ball-like morphologies showed better electrochemical performance with specific capacities of 415.7 and 414.1 mA h/g, respectively up to 200 cycles due to their stable construction with hollow cavity, porous shell and Ni and Co dopants. However, the specific capacity of Ni and Co doped Fe2O3@TiO2 hollow microspheres increased to 562 mA h/g. This work showed a new avenue for designing and fabricating yolk-shell hollow structures with specific morphologies and compositions in order to optimize their specific capacity for use in lithium-ion batteries. (C) 2018 Elsevier B.V. All rights reserved.
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- 否
