Abstract
High-nickel layered oxide LiNi0.9Co0.1O2 is considered as potential cathode materials for next-generation lithium-ion batteries. However, there are still some challenges such as interface side reactions, microcracks and the residual lithium compounds (LiOH and Li2CO3). In this work, a phospholipid-like protective layer of YPO4-Li3PO4 is designed to selectively pass Li+ and consume residual lithium compounds, thus greatly suppressing interface side reactions, especially at high temperature conditions. In the as-designed phospholipid-like protective layer, the ionic conductor Li3PO4 provides efficient Li+ channels and enhances Li+ transport, while YPO4 relieves stress during cycling. Consequently, the modified high-nickel layered oxide has a superior cycling performance at high temperature (50 ℃) with a capacity retention of 86.3% after 100 cycles, which is much higher than that of bare high-nickel layered oxide cathode (58.2%). This work provides a convenient strategy for other layered oxide cathode to repair and stabilize surface/interface.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
