High temperature cyclic performance of LiNi1/3Mn1/3Co1/3O2 cathode material for lithium ion battery

• Main Authors: Shih-feng Chen, 陳淑芬
• Other Authors: Chia-Chin Chang
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/25491575924525266913

碩士 === 國立臺南大學 === 綠色能源科技學系碩士班 === 101 === The issue of has been environmental protection earned lots of concern in recent years. Lithium-ion secondary battery is a green power components element for electric vehicle. Now, the demands for the battery performance are stringent, especially for the energy capacity and cycling stability. Comparing to other cathode materials, LiNi1/3Mn1/3Co1/3O2 composite has better cycling performance, higher working voltage. It has good potential for the application for on the cathode materials while the LiNi1/3Mn1/3Co1/3O2 deceases quickly after the reaction with the electrolyte at high voltage. The result showed that the electrolyte additive using in this working can help to form the solid electrolyte interphase (SEI) which can improve the cycling performance at high temperatures and working voltages. It also showed that the electrolyte additive 2wt% ADM can effectively improve the high temperature cycle performance after 100 cycles (keeps at 46.1%). The material analysis of LiNi1/3Mn1/3Co1/3O2 cathode after 100 cycles was investigated by scanning electron microscope and the inductively couple plasma optical emission spectrometry. These results confirmed that the SEI film can help to reduce the metal ion dissolution.