TiO2-coated SnO2 hollow spheres as anode materials for lithium ion batteries
来源期刊：Rare Metals2011年第6期
论文作者：YI Jina,LI Xiaopinga,b,c,HU Shejuna,b,c,LI Weishana,b,c,ZENG Ronghuaa,FU Zhaoa,and CHEN Langa a School of Chemistry and Environment,South China Normal University,Guangzhou ,China b Key Laboratory of Electrochemical Technology on Energy Storage and Power Generation of Guangdong Higher Education Institutes,Guangzhou ,China c Engineering Research Center of Materials and Technology for Electrochemical Energy Storage,Ministry of Education,Guangzhou ,China
文章页码：589 - 594
摘 要：TiO2-coated SnO2（TCS） hollow spheres,which are new anode materials for lithium ion（Li-ion） batteries,were prepared and characterized with X-ray diffraction（XRD） ,scanning electron microscopy（SEM） ,transmission electron microscopy（TEM） ,cyclic voltammetry（CV） ,and galvanostatic charge/discharge tests.The results obtained from XRD,SEM,and TEM show that TiO2 can be uniformly coated on the surface of SnO2 hollow spheres with the assistance of anionic surfactant.The cyclic voltammograms indicate that both TiO2 and SnO2 ex-hibit the activity for Li-ion storage.The charge/discharge tests show that the prepared TCS hollow spheres have a higher reversible coulomb efficiency and a better cycling stability than the uncoated SnO2 hollow spheres.
YI Jina,LI Xiaopinga,b,c,HU Shejuna,b,c,LI Weishana,b,c,ZENG Ronghuaa,FU Zhaoa,and CHEN Langa a School of Chemistry and Environment,South China Normal University,Guangzhou 510006,China b Key Laboratory of Electrochemical Technology on Energy Storage and Power Generation of Guangdong Higher Education Institutes,Guangzhou 510006,China c Engineering Research Center of Materials and Technology for Electrochemical Energy Storage,Ministry of Education,Guangzhou 510006,China
摘 要：TiO2-coated SnO2（TCS） hollow spheres,which are new anode materials for lithium ion（Li-ion） batteries,were prepared and characterized with X-ray diffraction（XRD） ,scanning electron microscopy（SEM） ,transmission electron microscopy（TEM） ,cyclic voltammetry（CV） ,and galvanostatic charge/discharge tests.The results obtained from XRD,SEM,and TEM show that TiO2 can be uniformly coated on the surface of SnO2 hollow spheres with the assistance of anionic surfactant.The cyclic voltammograms indicate that both TiO2 and SnO2 ex-hibit the activity for Li-ion storage.The charge/discharge tests show that the prepared TCS hollow spheres have a higher reversible coulomb efficiency and a better cycling stability than the uncoated SnO2 hollow spheres.
关键词：
