高等学校化学学报Issue(1)：175-179,5.DOI:10.7503/cjcu20140352
MWCNT@SiO2纳米同轴电缆的制备及储锂性能
Preparation and Lithium Storage Performance of MWCNT@SiO2 Coaxial Nanocables†
摘要
Abstract
MWCNT@SiO2 coaxial nanocables were prepared via a facile hydrolysiscondensation process of tetraethyl orthosilicate( TEOS) with multiwalled carbon nanotubes( MWCNT) as templates. The morphology, structure and electrochemical performance of the nanohybrids were characterized by transmission electron mi croscopy( TEM) , scanning electron microscopy ( SEM ) , and electrochemical measurements. It is indicated that the MWCNT templates have been fully wrapped by SiO2 layer with uniform thickness and porous nature, which is beneficial for the enhanced Listorage capabilities of the MWCNT@ SiO2 nanohybrids. When evaluated as anode materials for Liion battery, the MWCNT@SiO2 coaxial nanocables exhibit high specific capacities and excellent cycling performance. For example, the MWCNT@SiO2 coaxial nanocables are able to deliver a high discharge capacity of 431. 7 mA·h/g after 80 cycles at a current density of 100 mA/g, which is higher than the theoretical capacity of graphite(372 mA·h/g). The facile synthetic methodology and en hanced lithiumstorage performances of the MWCNT@SiO2 coaxial nanocables make it an ideal anodic candi date for highenergy and longlife Liion batteries( LIBs) .关键词
锂离子电池/负极材料/MWCNTSiO2/纳米同轴电缆/水解缩聚反应Key words
Liion battery/Anode material/MWCNTSiO2/Coaxial nanocable/Hydrolysiscondensation reaction分类
化学化工引用本文复制引用
石慧敏,王惠,尹金维,朱青云,吴平,唐亚文,周益明,陆天虹..MWCNT@SiO2纳米同轴电缆的制备及储锂性能[J].高等学校化学学报,2015,(1):175-179,5.基金项目
江苏省产学研前瞻性研究项目(批准号：BY2013001-01)、江苏省自然科学基金(批准号：BK20130900)和江苏省高校自然科学基金(批准号:13KJB150026)资助.? Supported by the Industry-Academia Cooperation Innovation Fund Project of Jiangsu Province, China(No. BY2013001-01), the Natural Science Foundation of Jiangsu Province, China(No. BK20130900) and the Natural Science Foundation of Jiangsu Higher Education Institutions, China(No.13KJB150026) （批准号：BY2013001-01）
