Preparation of Li-Mn-Ni oxides for cathode material of Li-ion thin film battery by electrochemical method

• Main Authors: Chiang-Wei Chen, 陳江維
• Other Authors: 顏秀崗
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/80393408109758424340

碩士 === 國立中興大學 === 材料科學與工程學系所 === 97 === For overcoming the disadvantages of the LiMn2O4 as a lithium ion battery cathode on electric capacity quick decay, Ni2+ ion was added into the mixture of LiNO3 and Mn(NO3)2 aqueous solution to synthesize LiMn2-xNixO4 cathode materials. It was expected that the lattice structure was fixed by the effect of Ni replacing Mn to improve the cyclic performance. The synthesized LiMn2-xNixO4 cathode material in this research was characterized by SEM, XRD, CV tests, and charge/discharge test. Its stable crystal structure during charge and discharge reduced the effect of Jahn-Teller distortion, leading to 99% retention of capacity, from 241 for the 1st cycle to 239 mAh/g for the 20th cycle.