摘要
In this work,we report the synthesis of ZnO ultrafine-rods with aspect ratio of about10via hydrothermal method.The as-prepared rod-like ZnO are characterized by X-ray diffraction(XRD),scanning electron mi-croscopy(SEM),transmission electron microscopy(TEM),and selected area electron diffraction(SAED).And the electrochemical performance of the ZnO material for Li-ion insertion and extraction is also investigated.It is found that the initial discharge capacity of1277mAh · g -1 and the high reversible capacity of766mAh · g -1 with low Li-ion insertion potential are obtained although the cyclic stability is relatively poor.The ZnO electrode after charging is characterized by X-ray diffraction,and only metallic Zn peaks with rod-like morphology are detected.The CV measurements prove the serial formation of Li-Zn alloys during discharging and charging process.
In this work,we report the synthesis of ZnO ultrafine-rods with aspect ratio of about10via hydrothermal method.The as-prepared rod-like ZnO are characterized by X-ray diffraction(XRD),scanning electron mi-croscopy(SEM),transmission electron microscopy(TEM),and selected area electron diffraction(SAED).And the electrochemical performance of the ZnO material for Li-ion insertion and extraction is also investigated.It is found that the initial discharge capacity of1277mAh · g -1 and the high reversible capacity of766mAh · g -1 with low Li-ion insertion potential are obtained although the cyclic stability is relatively poor.The ZnO electrode after charging is characterized by X-ray diffraction,and only metallic Zn peaks with rod-like morphology are detected.The CV measurements prove the serial formation of Li-Zn alloys during discharging and charging process.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2004年第4期488-492,共5页
Chinese Journal of Inorganic Chemistry
基金
国家重点基础研究发展规划(No.2002CB211800)
国家基础研究重大项目前期研究专项(No.2001CCA05000)
国家自然科学基金(No.90206043)资助项目。
