Abstract
In this study we characterize 4-(trimethylsilyl) morpholine (TMSML) as a multifunctional electrolyte additive in Li1.03(Ni0.5Mn0.3Co0.2)0.97O2 (NMC532)//Graphite cells operating at 3–4.4 V. This additive completely prevents the hydrolysis of LiPF6 caused by traces of water in a carbonate electrolyte, both ex and in situ. It also inhibits oxidative decomposition of electrolyte on the energized cathode, impedes the formation of electrically insulating deposits on the cathode surface, decreases transition metal loss from the cathode in aged cells, improves the discharge capacity retention, and decreases the rise of cell resistance during aging. We trace these beneficial functions to the ease of nucleophilic substitution and the N–Si bond dissociation in the TMSML. Our results suggest that TMSML could be a promising electrolyte additive in the high voltage lithium ion batteries.
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 callSimilar Papers
More From: Journal of The Electrochemical Society
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.
