When the battery is charged a cutoff voltage up to 4.2 V,only half lithium can be extracted from LiCoO2 to Li0.5CoO2.Thus,it is a well-accepted strategy to charge LiCoO2 cathode beyond 4.2 V,in order to utilize more lithium ions from the cathode and to increase the specific capacity and the energy density of LiCoO2.However,the charge cutoff voltage over 4.2 V incurred the dissolution of LiCoO2 into the electrolyte,thereby causing an increased capacity fade upon cycling.In this study,ALD derived coatings were employed to mitigate the capacity fading of LiCoO2 in order to satisfy LIB application.We will report the roles of various metal oxides on LiCoO2 performance.