Synthesis of spherical nano tin encapsulated pyrolytic polyacrylonitrile composite anode material for Li-ion batteries

被引：23

作者：

He, Xiangming ^{[1
]}

Pu, Weihua ^{[1
]}

Wang, Li ^{[1
]}

Ren, Jianguo ^{[1
]}

Jiang, Changyin ^{[1
]}

Wan, Chunrong ^{[1
]}

机构：

[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China

来源：

SOLID STATE IONICS | 2007年 / 178卷 / 11-12期

关键词：

tin; composite anode; polyacrylonitrile; low temperature pyrolysis; Li-ion batteries;

D O I：

10.1016/j.ssi.2007.02.013

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：

Spherical nano Sn encapsulated pyrolytic polyacrylonitrile composite anode material was prepared for Li-ion batteries. The preparation started with the dissolution of SnCl2 and polyacrylonitrile (PAN) in dimethylformamide (DMF) solution, followed by the reduction of Sn using KBH4. The composite was obtained by the pyrolysis of the Sn/PAN mixture at 300 degrees C. The TEM analysis showed that about 20-40 nm spherical Sn particles were embedded by the pyrolytic PAN. The as-prepared composite presented good cycleability for lithium storage with high initial Coulombic efficiency of 71%. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：833 / 836

页数：4

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