Sucrose-Assisted Synthesis of Layered Lithium-Rich Oxide Li[Li0.2Mn0.56Ni0.16Co0.08]O2 as a Cathode of Lithium-Ion Battery

Crystals

卷:9

Wei Zhong¹  Xueyin Song¹  Haifu Huang² 

[1] Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures and Jiangsu Provincial Laboratory for Nanotechnology, Nanjing University, Nanjing 210093, China;

[2] Guangxi Key Laboratory for Relativistic Astrophysics, Center on Nanoenergy Research, Guangxi Novel Battery Materials Research Center of Engineering Technology, Guangxi Colleges and Universities Key Laboratory of Novel Energy Materials and Related Technology, Guangxi Key Laboratory of Processing for Non-ferrous Metallic and Featured Materials, School of Physics Science and Technology, Guangxi University, Nanning 530004, China;

关键词: layered lithium-rich materials;    cathode material;    sucrose-assisted method;    electrochemical performance;   

DOI  :  10.3390/cryst9090436

来源: DOAJ

【 摘 要 】

：Herein, the lithium-rich material Li[Li_0.2Mn_0.56Ni_0.16Co_0.08]O₂ is successfully prepared by a sucrose-assisted gel method. With the assistance of sucrose, Li[Li_0.2Mn_0.56Ni_0.16Co_0.08]O₂ precursors can be uniformly dispersed into sticky sucrose gel without aggregation. XRD shows that the lithium-rich material Li[Li_0.2Mn_0.56Ni_0.16Co_0.08]O₂ has a well-organized layered structure. The electrochemical performance is influenced by calcination temperature. The results show that the sample Li[Li_0.2Mn_0.56Ni_0.16Co_0.08]O₂ calcined at 900 °C possess significant performance. This sample delivers higher discharge specific capacity of 252 mAh g⁻¹; rate capability with a capacity retention of 86% when tested at 5C; and excellent cyclic stability with a capacity retention rate of 81% after 100 cycles under 1C test. The sucrose-assisted method shows great potential in fabricating layered lithium-rich materials

【 授权许可】

Unknown