Charge compensation and capacity fading in LiCoO2 at high voltage investigated by soft x-ray absorption spectroscopy
Long Xing-Hui1, 2, 3, Wu Yan-Ru1, 2, 3, Zhang Nian1, 2, Yu Peng-Fei1, 2, †, Feng Xue-Fei4, Zheng Shun1, 2, 3, Fu Jia-Min1, 2, 5, Liu Xiao-Song1, 2, 5, Liu Na6, Wang Meng6, Xu Lei-Min6, Chen Jin-Ming7, Lee Jenn-Min7
       

(color online) Electrochemical tests of LiCoO2, showing (a) amount of Li+ increasing with upper cutoff voltage, and (b) cycling performances for the charge cutoff voltages of 4.4, 4.5, and 4.6 V.