文献类型：期刊文献

英文题名：In situ Preparation of SiOx/Carbon Nanotube Composite Films with Excellent Mechanical and Electrochemical Properties as an Anode Material for Lithium-Ion Batteries

作者：Liu, Guo Long[1];Zhang, Yi Hang[2];Shi, Hong Liang[1];Zhao, Chen Peng[1];Mo, Run Wei[1];Wang, Jian Nong[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2024

卷号：12

期号：7

外文期刊名：ENERGY TECHNOLOGY

收录：;EI(收录号：20241715979247);WOS:【SCI-EXPANDED(收录号:WOS:001207433400001)】；

基金：This research was supported by National Key R&D Program of China (grant nos. 2022YFA1200075 and 2018YFA0208404), National Natural Science Foundation of China (grant no. 52172089), and Innovation Program of Shanghai Municipal Education Commission.

语种：英文

外文关键词：carbon nanotubes; composite films; in situ preparation; lithium-ion batteries; silicon monoxide

摘要：Silicon monoxide (SiOx) has become one of the most promising anode materials for next-generation lithium-ion batteries (LIBs) due to its high theoretical capacity. However, the inherent low electrical conductivity and large volume change during lithiation/delithiation processes hinder its practical applications. Here, a novel and facile strategy is designed to prepare SiOx/carbon nanotube (CNT) composite films in one step by using a method involving floating catalytic chemical vapor deposition (FCCVD). That is, SiOx particles and CNTs form at high temperature and winded directly on a drum to give rise to a film in an open air environment. The composite film is made up of a 3D CNT network with SiOx particles uniformly embedded. The as-prepared composite film not only has a tensile strength of 78 MPa and elongation at break of 52%, but also exhibits a high specific capacity of 966.4 mA h g-1 after 120 cycles at the current density of 0.1 A g-1 and a good rate capacity of 448.7 mA h g-1 at the current density of 2 A g-1 when used as an anode material for LIBs. The results from the in-situ preparation and resultant composite suggest a new route for developing high-performance anode materials for LIBs.