锂离子电池的发展状况

国内外锂离子电池快速发展,广泛应用于家电产品.汽车面临汽油紧张和污染环境,电动车将部分解决这些问题.电动自行车已为人们接受.锂离子电池以其优良的性能,将成为电动车的主要动力源.钴酸锂由于性能好,而成为当今小型锂离子电池的主角,但世界上钴储量少,作为动力电池材料,市场前景小.锰酸锂的锰资源较多,价格比钴便宜很多,可成为动力电池的主要材料.与钴酸锂相比,锰酸锂的性能还有不足,如比容量和循环寿命较低,因此应当着重研究,改善其品质.现在锰酸锂电池已投向市场,将会促进其研究和生产,推动电动汽车进入市场.

Development status of Li-ion batteries

Li-ion batteries used in the electronic devices developed rapidly worldwide in recent years. Electric vehicle (EV) would alleviate the problems of petrol lack and environmental pollution induced by cars. Electric bicycles had been accepted by people. (Li-ion) battery would be the main power sources for EVs due to its excellent performance. The amount of Co storage in the earth was limited leading to small market potential as power battery cathode material for EVs, although LiCoO_2 had good properties and became a leading actor in small size Li-ion battery. The amount of Mn storage was abundant and the price of Mn was much cheaper than Co, which could be the main material of cathode material of Li-ion battery. Compared with LiCoO_2, LiMn_2O_4 had some disadvantages such as lower specific capacity and shorter cycle life, so related research of LiMn_2O_4 should be emphasized to improve its performance. Li-ion battery with LiMn_2O_4 sold in the market should be enhanced to related research and development to industrialize the EVs soon.