Triallyl Isocyanurate as an Efficient Electrolyte Additive for Layered Oxide Cathode Material-Based Lithium-Ion Batteries with Improved Stability under High-Voltage

Molecules

Chang-Ming Zhang¹  Jin-Gang Yu¹  Feng Li²  Xue-Quan Zhu³ 

[1] College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;Research Institute of Highpower International, Huizhou 516057, China;Shanshan Advanced Materials (QuZhou) Co., Ltd., Quzhou 324012, China;

关键词: multifunctional electrolyte additive;    improved interface stability;    triallyl isocyanurate;   

DOI  :  10.3390/molecules27103107

来源: DOAJ

【 摘 要 】

In this study, a new electrolyte additive 1,3,5-tri-2-propenyl-1,3,5-triazine-2,4,6-(1H, 3H, 5H)-trione (TAIC) for lithium-ion batteries is reported. The additive is introduced as a novel electrolyte additive to enhance electrochemical performances of layered lithium nickel cobalt manganese oxide (NCM) and lithium cobalt oxide (LiCoO₂) cathodes, especially under a higher working voltage. Encouragingly, we found protective films would be formed on the cathode surface by the electrochemical oxidation, and the stability of the cathode material–electrolyte interface was greatly promoted. By adding 0.5 wt.% of TAIC into the electrolyte, the battery exhibited outstanding performances. The thickness swelling decreased to about 6% after storage at 85 °C for 24 h, while the capacity retention of cycle-life performances under high temperature of 45 °C after the 600th cycle increased 10% in comparison with the batteries without TAIC. Due to its specific function, the additive can be used in high energy density and high voltage lithium-ion battery systems.

【 授权许可】

Unknown