摘要
采用水热电化学法在Ni基体上制备了LiCoO2薄膜.反应温度影响薄膜的择优取向,80℃时制备的薄膜具有(003)取向,100℃制备的LiCoO2薄膜具有(101)和(104)取向,150℃时制备的薄膜取向性不明显.其中以100℃制备的(101)取向LiCoO2薄膜的电化学性能最好,其容量为143mAh/g;10次充放电后,薄膜电极容量衰减小.
LiCoO2 films were fabricated on nickel substrates by a hydrothermal-electrochemical method. The film prepared at 80℃ is mainly （003） plane oriented and prepared at 100℃, （101） and （104） plane oriented and prepared at 150℃ （003） plane oriented as well. The （101） plane orientation is favorable for Li^＋ diffusion through the cathode, and therefore the （101） plane oriented film contributes to the enhanced electrochemical performance. The film with （101） oriented prepared at 100℃ has the capacity of 143mAh/g and no obvious capacity attenuation detected.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第5期1229-1233,共5页
Journal of Inorganic Materials
关键词
水热电化学法
LiCoO2薄膜
择优取向
电性能
hydrothermal-electrochemical method
LiCoO2 film
preferred oriention
electrochemical characterization
