Abstract
High nickel ternary cathode materials display high specific capacity and low cost, but still suffer irreversible phase change, side reaction and particle cracking during the electrochemical reaction processes. Herein, a P-doped single crystal Ni-rich cathode material is designed, which shows excellent lithium-ion insertion/extraction capability. The phase transition (H1 → H2 → H3) is relieved by the accumulation of interfacial force due to P-doping, as which increases the charge density and promotes the electrostatic repulsion between oxygen layers. P-doping also leads to an increase of lattice parameter c, and the increased thickness of lithium layers and transition metal layers expands the two-dimensional diffusion channel of lithium-ion in the layered structure, facilitating the lithium-ion insertion/extraction processes. The doped ternary single crystal cathode material demonstrates a stable surface structure with resistance to environmental erosion. This work demonstrates that the P-doping is promising to further improve ternary single crystal cathode material for superior lithium-ion battery applications.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.