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| Critical roles of AlPO4 coating in enhancing cycling stability and rate capability of high voltage LiNi0.5Mn1.5O4 cathode materials |
| Author Name | Affiliation | E-mail | | WU Jie | School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China | | | LUO Zhihong | School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China | | | CHEN Xiaoli | School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China | | | XIONG Fangfang | School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China | | | CHEN Li | School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China | | | ZHANG Biao | School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China | | | SHI Bin | State Key Laboratory of Advanced Chemical Power Sources, Guizhou Meiling Power Supply Co., Ltd., Zunyi, Guizhou 563003, China | | | OUYANG Quansheng | School of Materials Science and Engineering, Shanxi Institute of Science and Technology, Jincheng, Shanxi 048011, China | | | SHAO Jiaojing | School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China | shaojiao_jing@163.com |
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| Abstract: LiNi0.5Mn1.5O4 (LNMO) was prepared by a high-temperature solid phase method, and then AlPO4 (AP) was coated on the polyhedral LNMO surface by the wet chemical method. The experimental results showed that the LNMO-1%AP|Li cell prepared with a 1% mass ratio of AlPO4 and LNMO had better electrochemical performance; after 450 cycles at 1C, its discharge specific capacity maintained 108.78 mAh·g-1, while that of the LNMO|Li cell was only 86.04 mAh·g-1. Especially at the high rates of 5C and 10C, the electrochemical properties of the former were far superior to the latter. This was attributed to the fact that the AP coating made the surface of LNMO in con- tact with the electrolyte more stable, effectively promoted the Li+ transport, and reduced the polarization voltage of the electrode. |
| Keywords: LiNi0.5Mn1.5O4 high voltage lithium-ion batteries high-temperature solid-phase method aluminum phosphate |
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| WU Jie,LUO Zhihong,CHEN Xiaoli,XIONG Fangfang,CHEN Li,ZHANG Biao,SHI Bin,OUYANG Quansheng,SHAO Jiaojing.Critical roles of AlPO4 coating in enhancing cycling stability and rate capability of high voltage LiNi0.5Mn1.5O4 cathode materials[J].Chinese Journal of Inorganic Chemistry,2025,41(5):948-958. |
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