Growth Mechanism and Electrochemical Properties of Porous Hollow Tin Dioxide Nanospheres

被引：3

作者：

Yang, Youwen ^{[1
]}

Ma, Dongming ^{[1
]}

Chen, Ting ^{[1
]}

Gao, Yuanhao ^{[1
]}

Li, Guanghai ^{[2
]}

机构：

[1] Hefei Univ Technol, Sch Chem Engn, Hefei 230009, Peoples R China

[2] Chinese Acad Sci, Inst Solid State Phys, Hefei 230031, Peoples R China

来源：

NANO | 2015年 / 10卷 / 06期

基金：

国家高技术研究发展计划(863计划);

关键词：

SnO2; nanospheres; hollow structures; growth mechanism; electrochemical properties; LITHIUM-ION BATTERIES; HYDROTHERMAL SYNTHESIS; SNO2; NANOSTRUCTURES; ANODE MATERIALS; STORAGE; NANOPARTICLES; NANOMATERIALS; MICROSPHERES; PERFORMANCE;

D O I：

10.1142/S1793292015500873

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Porous hollow SnO2 nanospheres were prepared by means of enforced Sn2+ hydrolysis method under hydrochloric acid medium. These hollow nanospheres with an average diameter of 220 nm had a very thin shell thickness of about 40 nm and were surrounded by elongated octahedral-like nanoparticles with the apex oriented outside. The experimental conditions, such as HCl content, reaction temperature and time directly dominated the morphology, structure and crystallinity of the obtained samples. A pre-oxidation-nucleation-growth mechanism and inside-out Ostwald-ripening method was proposed on the basis of the previous research and time-dependent experiments. Electrochemical tests showed that the porous hollow SnO2 nanospheres exhibited improved cycling performance for anode materials of lithium-ion batteries, which retained a high reversible capacity of 540.0 mAhg(-1), and stable cyclic retention at 120th cycle.

引用

页数：9

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