Advanced Cathode Materials for High Power Applications

摘要

Li_(1+x)Ni_(1/3)Mn_(1/3)O_2 was investigated as a potential cathode material for high-power Li-ion battery systems that could offer lower cost, improved safety and better performance than the LiNio.8Coo.15Alo.05O2 cell system. Calendar life and thermal safety test of graphite/ Li_(1+x) (Ni_(1/3)Co_(1/3)Mn_(1/3))_(1-x)O_2 cells showed no power fade and better thermal safety than the graphite/LiNi_(0.8)Co_(0.15)Al_(0.05)O_2 cell system. This system has excellent power performance especially when 10% excess lithium was added the cathode Li_(1+x) (Ni_(1/3)Co_(1/3)Mn_(1/3))_(1-x)O_2.