The Quantitative Analyses of the Dissolved Manganese in the Electrolyte of Li/LiMn2O4 Cell Using by Ion Chromatography

摘要

The emphasis on green technology for electric vehicle application has provided much emphasis on lithium battery research work based on Li/LiMn2O4 battery system. Even though the cathode LiMn2O4 has environmentally benign elements with low cost benefit, it inherits low cycle life compared to cobalt and nickel based cathodes. The cycle capacity is also affected when the cells are cycled at higher temperature conditions especially above 50 °C. The reason for the capacity fading at high temperature is believed to be due to factors such as, i) the decomposition of electrolyte at the high voltage region; ii) the particle fracture due to repeated cycling.