Electrochemical impedance spectroscopy studies of lithium diffusion in doped manganese oxide
作者： B.J. Johnson , D.H. Doughty , J.A. Voigt , T.J. Boyle
DOI: 10.1016/S0378-7753(96)02636-5
关键词: Dopant 、 Dielectric spectroscopy 、 Lithium 、 Electrochemistry 、 Doping 、 Analytical chemistry 、 Materials science 、 Diffusion 、 Lattice constant 、 Cathode 、 Inorganic chemistry
摘要: Cathode performance is critical to lithium ion rechargeable battery performance; effects of doping manganese oxide cathode materials on are being investigated. In this paper, Li diffusion in Al-doped LiMn{sub 2}O{sub 4} was studied and found be controlled by the quantity Al dopant. Electrochemical cycling conducted at 0.5mA/cm{sub 2}; electrochemical impedance spectra were taken open circuit potential, with measured 65 kHz-0.01 Hz. As dopant level increased, rate decreased; attributed decreased lattice parameter doped oxide.
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