Sn@CNT and Sn@C@CNT nanostructures for superior reversible lithium ion storage

被引：184

作者：

Wang, Yong ^{[1
,2
]}

Wu, Minghong ^{[1
]}

Jiao, Zheng ^{[1
]}

Lee, Jim Yang ^{[2
]}

机构：

[1] Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China

[2] Natl Univ Singapore, Singapore MIT Alliance, Singapore 117576, Singapore

来源：

CHEMISTRY OF MATERIALS | 2009年 / 21卷 / 14期

基金：

中国国家自然科学基金;

关键词：

CARBON NANOTUBES; ANODE MATERIAL; IN-SITU; ELECTROCHEMICAL PROPERTIES; SECONDARY BATTERIES; TIN-NANOPARTICLES; HOLLOW CARBON; ONE-STEP; PERFORMANCE; ELECTRODES;

D O I：

10.1021/cm900702d

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：

In this study we demonstrate a facile templated chemical vapor deposition (CVD) method to produce CNT-encapsulated Sn nanoparticles with similar to 100% particle encapsulation and high filling uniformity. The encapsulated Sri particles were formed either as Sn or Sn@carbon core-shell particles with good control of size and morphology. The complete and uniform encapsulation of small, electrochemically active Sri particles within a CNT matrix with large free volume accommodated the volume excursion problem in repetitive lithium insertion and extraction reactions very well, showing good resilience in maintaining electrical connective and mechanical integrity. Consequently the completely Filled Sn@CNT nanocomposite showed excellent reversible lithium ion storage properties.

引用

页码：3210 / 3215

页数：6

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