Performance Analysis of charge/discharge cycle effect of Multi-type Li-ion battery electrolyte and electrode systems

• Main Authors: Wen-Chun Wang, 王文淳
• Other Authors: Da-Sheng Li
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/b8772f

碩士 === 國立臺北科技大學 === 能源與冷凍空調工程系碩士班 === 98 === In 1997, Goodenough et. Al. present the called of LiMPO4, at the same year, Padhi proves that LiFePO4 can be used as the cathode materials of rechargeable lithium-ion battery；In 2000, Amine et. Al. has investigate the crystal size of olivine structure LiCoPO4；In 2001, Yamada et. Al. has fabricated olivine structure LiCoPO4 by sol-gel；In 2004, Herle et. Al.has fabricated olivine structure LiNiPO4 by solid state method. Traditional Lithium Iron Phosphate Battery is not harmless to environment, easy to obtain, the charge and discharge structure are similarity, very safe and stable while working. And the earth is rich of Iron, so the cost of iron is low, besides, iron has good thermal stability, high activity, so it has been widely use in hybrid vehicles, electric cars, electric bikes. LiFePO4 compound material, iron’s conductivity is lower than other material, so if use carbon coated on the cathode, can improve to big scale, high rate or decrease crystal size to increase ion space, thus to increase dicharge. So we discuss four kinds of the cathode material: LiCoPO4、LiMnPO4、LiNiPO4 and LiFePO4,discuss the theoretical capacity, frequency of charge/discharge, COP and current efficiency, respectively. Hope we can use this technology on large electric vehicles, solar and wind power storage device, hybrid vehicle in the future, and into a high efficiency, low cost products generation.