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Physical and Electrochemical Characterization of LiCo0.8M0.2O2 (M=Ni,Zr) Cathode Films for All-solid-state Rechargeable Thin-film Lithium Batteries
Chi-lin Li ,Wen-yuan Liu ,Zheng-wen Fu*
Author NameAffiliation
Chi-lin Li Department of Chemistry & Laser Chemistry Institute, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China 
Wen-yuan Liu Department of Chemistry & Laser Chemistry Institute, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China 
Zheng-wen Fu* Department of Chemistry & Laser Chemistry Institute, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China 
Abstract:
LiCo0.8M0.2O2 (M=Ni,Zr) films were fabricated by radio frequency sputtering deposition combined with conventional annealing methods. The structures of the films were characterized with X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscopy (SEM) techniques. It was shown that the 700 ±C-annealed LiCo0.8M0.2O2 has an @-NaFeO2-like layered structure. All-solid-state thin-film batteries (TFBs) were fabricated with these films as the cathode and their electrochemical performances were evaluated. It was found that doping of electrochemically active Ni and inactive Zr has different effects on the structural and electrochemical properties of the LiCoO2 cathode films. Ni doping increases the discharge capacity of the film while Zr doping improves its cycling stability.
Key words:  Cathode materials, All-solid-state thin-film batteries, Radio frequency sputtering
FundProject:supported by the National Natural Science Foundation of China (No.20203006)
基于LiCo0.8M0.2O2 (M=Ni,Zr)薄膜的全固态薄膜锂电池
李驰麟 ,刘文元 ,傅正文
摘要:
用射频磁控溅射结合传统退火的方法制备LiCo0.8M0.2O2 (M=Ni,Zr) 阴极薄膜. X射线衍射、拉曼光谱、扫描电子显微镜等 手段表征了不同掺杂的LiCo0.8M0.2O2薄膜. 结果显示,700 ±C退火 的LiCo0.8M0.2O2薄膜具有类似?-NaFeO2的层状结构. 通过对不同 掺杂锂钴氧阴极的全固态薄膜锂电池Li/LiPON/LiCo0.8M0.2O2的电 化学性能研究表明,电化学活性元素Ni的掺杂使全固态电池具有更大 的放电容量(56 1Ah/cm21m),而非电化学活性元素Zr的
关键词:  阴极材料,全固态薄膜电池,射频磁控溅射
DOI:10.1360/cjcp2006.19(6).493.6
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