Porous SnO2 hollow microspheres as anodes for high-performance lithium ion battery

被引：52
|
作者：
Li, Haojie [1 ]
Su, Qingmei [1 ,2 ]
Kang, Jinwei [1 ]
Huang, Min [1 ]
Feng, Miao [1 ]
Feng, Huagui [1 ]
Huang, Ping [1 ]
Du, Gaohui [1 ,2 ]
机构：
[1] Zhejiang Normal Univ, Inst Phys Chem, Jinhua 321004, Peoples R China
[2] Shaanxi Univ Sci & Technol, Inst Atom & Mol Sci, Xian 710021, Shaanxi, Peoples R China
来源：
MATERIALS LETTERS | 2018年 / 217卷
基金：
中国国家自然科学基金;
关键词：
Energy storage and conversion; SnO2 hollow spheres; Porous structure; Lithium ion batteries; COMPOSITE; MECHANISM; ELECTRODE; CAPACITY; STORAGE;
D O I：
10.1016/j.matlet.2018.01.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
SnO2 has been studied as a promising anode material for lithium-ion batteries due to its high theoretical capacity. However, the large volume change (>300%) and severe structural collapse during cycles are serious. To solve these issues, the porous SnO2 dumbbell-shaped hollow microspheres (DSHSs) were synthesized by a sacrificial template method. The porous SnO2 DSHSs deliver a capacity of 695 mAh g(-1) when the current density returns from 1600 to 100 mA g(-1). After being tested at larger current density of 1.0 A g(-1) for 100 cycles, the capacity retain 602 mAh g(-1). The superior performance of porous SnO2 DSHSs can be attributed to the porous and hollow microstructure, which provides more lithium storage sites; shorter Li-ion diffusion length and sufficient void space. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：276 / 280
页数：5
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