Morphology- Controllable Synthesis And Excellent Electrochemical Performance of Ni-Rich Layered Ncm622 As Cathode Materials For Lithium-Ion Batteries Via Glycerin-Assisted Solvothermal Method

High performance Ni-rich lamellar materials are widely regarded as valuable energy materials due to their good electrochemical performance and low preparation cost. However, the design of reasonable morphology and size is one of the effective ways to improve the structural stability of lithium ion battery cathode materials. A simple design strategy for glycerin solvothermal morphology is introduced to achieve this goal. Furthermore, the influence of microstructure on the electrochemical properties and structural stability of Ni-rich layered cathode materials is studied. In particular, the cathode material LiNi0.6Co0.2Mn0.2O2-50% glycerin (NCM-5) in the form of microspheres show good electrochemical performance and cyclic stability in all samples. After 100 cycles, the capacity retention rate is 79.25%. It is confirmed that the specific morphology and reasonable size can effectively alleviate the structural degradation and phase transition of particles after long-term cyclic testing.

Keywords: Ni-rich layered cathode materials, Glycerin-assisted, Morphology design strategy, Structure stability

Suggested Citation: Suggested Citation

Ding, Hongbing and Wang, Xinlu and Wang, Jinjin and Zhang, Hongbo and Liu, Guixia and Yu, Wensheng and Dong, Xiangting and Wang, Jinxian, Morphology- Controllable Synthesis And Excellent Electrochemical Performance of Ni-Rich Layered Ncm622 As Cathode Materials For Lithium-Ion Batteries Via Glycerin-Assisted Solvothermal Method. Available at SSRN: https://ssrn.com/abstract=4198028 or http://dx.doi.org/10.2139/ssrn.4198028