Sulfolane-Based Flame-Retardant Electrolyte for High-Voltage Sodium-Ion Batteries

Sulfolane-Based Flame-Retardant Electrolyte for High-Voltage Sodium-Ion Batteries

Highlights NaTFSI/SUL:OTE:FEC facilitates the formation of S, N-rich, dense and robust cathode–electrolyte interphase on NaNMF cathode, which improves the cycling stability under high voltage. By utilizing NaTFSI/SUL:OTE:FEC, the Na||NaNMF batteries achieved an impressive retention of 81.15% after 4...

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Main Authors: Xuanlong He, Jie Peng, Qingyun Lin, Meng Li, Weibin Chen, Pei Liu, Tao Huang, Zhencheng Huang, Yuying Liu, Jiaojiao Deng, Shenghua Ye, Xuming Yang, Xiangzhong Ren, Xiaoping Ouyang, Jianhong Liu, Biwei Xiao, Jiangtao Hu, Qianling Zhang
Format: Article
Language:English
Published: SpringerOpen 2024-10-01
Series:Nano-Micro Letters
Subjects:
Sodium-ion batteries
Sulfolane-based electrolyte
High voltage
Layered oxide cathode
Flame retardant
Online Access:https://doi.org/10.1007/s40820-024-01546-7
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Summary:Highlights NaTFSI/SUL:OTE:FEC facilitates the formation of S, N-rich, dense and robust cathode–electrolyte interphase on NaNMF cathode, which improves the cycling stability under high voltage. By utilizing NaTFSI/SUL:OTE:FEC, the Na||NaNMF batteries achieved an impressive retention of 81.15% after 400 cycles at 2 C with the cutoff voltage of 4.2 V. The study offers a reference for the utilization of sulfolane-based electrolytes in sodium-ion batteries (SIBs), while the nonflammability of the NaTFSI/SUL:OTE:FEC enhances the safety of SIBs.
ISSN:2311-6706
2150-5551

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