Amorphous SnO2-SiO2 thin films with reticular porous morphology for lithium-ion batteries

被引：17

作者：

Zhang, J.

Chen, L. B. ^{[1
]}

Li, C. C.

Wang, T. H.

机构：

[1] Hunan Univ, Minist Educ, Key Lab Micro Nano Optoelect Devices, Changsha 410082, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 26期

基金：

中国国家自然科学基金;

关键词：

amorphous semiconductors; electrochemical electrodes; porous semiconductors; secondary cells; semiconductor thin films; silicon compounds; spraying; tin compounds;

D O I：

10.1063/1.3044453

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Amorphous SnO2-SiO2 thin films with reticular porous morphology were fabricated by electrostatic spray deposition method for lithium-ion batteries. An initial discharge capacity of the SnO2-SiO2 electrodes with 15% of SiO2 was about 1271 mA h/g, and the reversible capacity stayed in the range of 869-501 mA h/g during the successive 100 cycles, but only 1141 and 694-174 mA h/g for the pure SnO2 electrodes. The high capacity was attributed to the addition of SiO2, which facilitated the formation of the Li-Sn alloy. The improved cycle performance was due to reticular porous structure, which accommodated the volume change during cycling.

引用

页数：3

共 18 条

[11] Electrochemical characterization of tin based composite oxides as negative electrodes for lithium batteries [J].