摘要
通过机械球磨和高温热处理合成得到Si和Ti_xSi_y纳米颗粒复合物Si/Ti_xSi_y,并对该化合物进行X射线能谱(EDX)、X射线衍射(XRD)、透射电子显微镜(TEM)和扫描电子显微镜(SEM)表征.合成的Si/Ti_xSi_y和机械球磨的Si/TiO_2都被用于锂离子电池的负极材料,Si/Ti_xSi_y表现出优越的充放电性能、较好的循环稳定性和倍率性能.
Titanium silicide（Ti_xSi_y） was utilized to enhance the electrochemical properties of Si as a promising anode for Li-ion batteries.The Si/Ti_xSi_y composite,composed of Si with Ti_xSi_y nanoparticles,was synthesized by mechanical milling and annealing at high temperature.The obtained Si/Ti_xSi_y composite were characterized by X-ray diffraction,scanning electron microscopy,energy-dispersive X-ray spectroscopy,and transmission electron microscopy.The electrochemical properties of the Si/Ti_xSi_ycomposite and mechanically milled Si/TiO_2 as anodes for Li-ion batteries were both investigated.The Si/Ti_xSi_y composite showed superior performance compared with the Si/TiO_2 sample,including increased initial coulombic efficiency,enhanced rate capability,and better capacity retention.
作者
张文婷
汤兑海
霍启升
ZHANG Wen-ting;TANG Dui-hai;HUO Qi-sheng(Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China;State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, ]ilin University, Changehun 130012, China)
出处
《分子科学学报》
CSCD
北大核心
2017年第6期460-465,共6页
Journal of Molecular Science
基金
国家自然科学基金青年科学基金资助项目(21601128)
无机合成与制备化学国家重点实验室(吉林大学)开放课题资助项目(2017-14)
生物质材料科学与技术教育部重点实验室开放基金资助项目(SWZCL2016-15)
沈阳师范大学校内优秀人才支持计划资助项目(054-51600210)
辽宁省高校重大科技平台"能源与环境催化工程技术研究中心"资助项目
辽宁省油气资源高效转化与洁净利用重点实验室资助项目
辽宁省油气资源高效转化与洁净利用工程研究中心资助项目
