Al-doped SnO2 hollow sphere as a novel anode material for lithium ion battery

被引：31

作者：

Wei, Chengwen ^{[1
]}

Zhang, Guoxi ^{[2
]}

Bai, Ying ^{[1
]}

Yan, Dong ^{[1
]}

Yu, Caiyan ^{[1
]}

Wan, Ning ^{[1
]}

Zhang, Weifeng ^{[1
]}

机构：

[1] Henan Univ, Sch Phys & Elect, Key Lab Photovolta Mat Henan Prov, Kaifeng 475004, Peoples R China

[2] Zhengzhou Presch Educ Coll, Zhengzhou 450000, Peoples R China

来源：

SOLID STATE IONICS | 2015年 / 272卷

基金：

中国国家自然科学基金;

关键词：

Lithium ion battery (LIB); Al-doped SnO2 hollow spheres; Electronic conductivity; Electrochemical performances; HIGH-PERFORMANCE; NANOSHEETS; STORAGE; NANOSTRUCTURES; NANOPARTICLES; COMPOSITES; NANOTUBES;

D O I：

10.1016/j.ssi.2015.01.014

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：

SnO2 hollow spheres are doped with different contents of Al (1,1.5, 2 at.%) by a one-step hydrothermal reaction. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM) and Brunauer-Emmett-Teller (BET) are utilized to characterize the structures, components, chemical environments, morphologies and specific areas of the as-prepared samples. The investigation in cycling performances demonstrates that 1.5 at.% Al-doped SnO2 hollow spheres exhibit the best cycling stability, with a specific capacity of 443 mAh g(-1) and coulombic efficiency of 99.1% after 50 cycles at 0.1 C, much higher than those of the pristine SnO2 hollow spheres and the other Al-doped samples. The improved electrochemical performances of Al-doped SnO2 hollow spheres are attributed to the increase of electronic conductivity and lithium ion diffusion coefficient, and therefore, enhance the reversible capacity and cycling properties. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：133 / 137

页数：5

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