ROCKING CHAIR LITHIUM BATTERY BASED ON NANOCRYSTALLINE TIO2 (ANATASE)

A new type of 2 V rocking chair lithium battery with nanocrystalline T IO2 (anatase) as the negative electrode and LiCoO2 or LiN/0.5Co0.5O2 a s the positive electrode has been studied. The electrolyte solution wa s 1M LIN(CF3SO2)(2) in ethylene carbonate + 1,2-dimethoxyethane. The T iO2/LiCoO2 and TiO2/LiNi0.5Co0.5O2 batteries delivered about 50 mAh/g (based on the total mass of active electrode materials) during galvano static charge/discharge at +/- 0.33 mA/cm(2). The latter battery showe d a capacity drop of about 30% over 190 galvanostatic charge/discharge cycles.