Study Of Novel Materials And System For Secondary Batteries

There are urgent demands for inexpensive, safe, environmentally friendly and high performance secondary battery system to meet the needs for high energy density power source.Lithium-ion batteries get wider and wider application due to its high open-circuit potential, high energy density and excellent cycle performance. Among kinds of anode materials for lithium-ion batteries, graphite has been commercialized anode materials for lithium-ion batteries owing to its excellent cycling behavior upon repeated charge and discharge cycles, but its theoretical capacity is limited to 372 mAh g?1, which can't satisfy the demand for higher performance battery systems. Therefore, it is urgent to develop new anode materials with larger capacity.Magnesium which has the similar chemical activity compared with lithium can provide the relatively low potential, high theoretic capacity, and it is inexpensive and safe to handling. Thus magnesium battery is considered to be one of the most promising secondary batteries. But most of organic solutions allow the growth of passivating surface films on magnesium, which inhibit any electrochemical reaction. Therefore, it is...