In-situ growth amorphous carbon nanotube on silicon particles as lithium-ion battery anode materials

被引：51

作者：

Zhao, Tingkai ^{[1
]}

She, Shengfei ^{[1
,2
]}

Ji, Xianglin ^{[1
]}

Jin, Wenbo ^{[1
]}

Dang, Alei ^{[1
]}

Li, Hao ^{[1
]}

Li, Tiehu ^{[1
]}

Shang, Songmin ^{[3
]}

Zhou, Zhongfu ^{[4
]}

机构：

[1] Northwestern Polytech Univ, Shaanxi Engn Lab Graphene New Carbon Mat & Applic, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

[2] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China

[3] Hong Kong Polytech Univ, Inst Text & Clothing, Kowloon, Hong Kong, Peoples R China

[4] Aberystwyth Univ, Dept Phys, Aberystwyth SY23 3FL, Dyfed, Wales

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 708卷

关键词：

Amorphous carbon nanotubes; Silicon core-shell composite; Chemical vapor deposition; X-ray diffraction; Electron microscopy; Electrochemical properties; NANOSTRUCTURED MATERIALS; ENERGY-CONVERSION; COMPOSITE ANODE; GRAPHENE; PERFORMANCE; NANOCOMPOSITE; NANOPARTICLES;

D O I：

10.1016/j.jallcom.2017.03.019

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：

A novel silicon core/amorphous carbon nanotube (ACNT) shell composite that can be used as lithium-ion batteries anode material was in-situ synthesized in the chemical vapor deposition (CVD) growth process. The hypothesized core/shell structure was evidenced by SEM/TEM/XRD, suggesting that the ACNTs composed of carbon clusters with short-range order and long-range disorder were successfully deposited onto the surface of the silicon particles. This Si/ACNT composite delivered a high capacity of 1496 mAh g(-1) at a current density of 100 mA g(-1), and a superior cycling stability with 80% capacity retention after 300 cycles. This observed specific capacity improvement of Si/ACNT composite is likely attributed to the formed three-dimensional conductive networks between silicon particles and interwoven ACNTs in the composite. (c) 2017 Elsevier B.V. All rights reserved.

引用

页码：500 / 507

页数：8

共 36 条

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