Enhanced electrochemical performance of ZrO2 modified LiNi0.6Co0.2Mn0.2O2 cathode material for lithium ion batteries |
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| Affiliation: | 1. Guangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China;2. Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia;1. Advanced Batteries Research Center, Korea Electronics Technology Institute, #68 Yatap-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-816, Republic of Korea;2. Department of Chemical Engineering, Donga University, Saha-gu, Busan, 604-714, Republic of Korea;1. Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China;2. Beijing Key Laboratory of Energy Nanomaterials, Advance Technology & Materials Co., Ltd, China Iron & Steel Research Institute Group, Beijing 100081, China;3. Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia;1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing Key Laboratory of Environment Science and Engineering, Beijing 100081, China;2. Beijing Higher Institution Engineering Research Center of Power Battery and Chemical Energy Materials, Beijing 100081, China;3. Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing 100081,China;4. Institute of Electric Engineering, China Academy of Engineering Physics, Mianyang 621900, China;5. Key Laboratory of Small Fuctional Organic Molecule, Ministry of Education. Jiangxi Normal University, Nanchang, Jiangxi 330022,China;1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;2. Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA;3. Tianjin Lishen Battery Joint-Stock Co., Ltd., Tianjin 300384, China;4. X-ray Science Division, Advanced Photon Sources, Argonne National Laboratory, 60439, USA;1. International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, School of Physics and Electronics, Henan University, Kaifeng 475004, PR China;2. School of Materials Sun Yat-sen University, Guangzhou 510275, PR China;1. School of Chemical Engineering and Technology, Harbin Institute of Technology, No. 92 West-Da Zhi Street, Harbin 150001 China;2. College of chemical and chemical engineering, Harbin Normal University, Harbin, Heilongjiang 150025, China;3. Xi׳an Huijie Industrial Co., Ltd., Xi׳an 710116 China |
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| Abstract: | LiNi0.6Co0.2Mn0.2O2 (NCM622) cathode has been modified by incorporating ZrO2 nanoparticles to improve its electrochemical performance. Compared to the pristine electrode, the cycling stability and rate capability of 0.5 wt% ZrO2 modified-NCM622 have been improved significantly. The 0.5 wt% ZrO2 modified-NCM622 cathode shows a capacity retention of 83.8% after 100 cycles at 0.1 C between 2.8 and 4.3 V, while that of the pristine NCM622 electrode is only 75.6%. When the current rate is set as 5C, the capacity retention of the 0.5 wt% ZrO2-modified NCM622 is 10% higher than that of the pristine NCM622. Also, the rate capability of 0.5 wt% ZrO2-modified NCM622 is better than that of the pristine NCM622 at various C-rates in a voltage range of 2.8–4.3 V. The enhanced electrochemical performances of the ZrO2-modified NCM622 cathodes can be attributed to their high Li-ion conductivity and structural stability. |
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| Keywords: | Cathode Modification Lithium ion batteries |
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