Authors
Chenyu Wang, Zhiqiang You, Jianhui Chen, Yongchuan Liu, Cuilian Wen, Xiangxin Zhang, Hengyi Li, Yuanqiang Chen, Chang-Feng Zhu, Baisheng Sa
Published in
Advanced materials (Deerfield Beach, Fla.). Pages e74227. Jul 21, 2026. Epub Jul 21, 2026.
Abstract
Lithium metal batteries are highly attractive for next-generation high-energy-density storage, and ether-based electrolytes such as LiFSI/DME are particularly promising for high-rate operation because of their low viscosity, high ionic conductivity, and favorable compatibility with Li metal. However, current electrolyte optimization strategies still rely mainly on small-molecule additives that regulate bulk solvation or the primary Li+ solvation sheath, whereas entropy-driven modulation of the interfacial solvation environment by large molecular additives remains largely unexplored. Herein, fluorinated fullerene C60F30 (FF) is introduced as a nanoparticle additive to create a dynamically disordered interface that enhances configurational entropy without sacrificing Li+ diffusivity, while accelerating Li+ desolvation and transport. Meanwhile, FF cooperates with FSI--derived species to build a robust fluorine-rich SEI, suppressing dendrite growth and parasitic reactions. As a result, Li||Li symmetric cells cycle stably for 1500 h, while high-loading Li||LiFePO4 cells retain 96.0% capacity after 500 cycles at 2C and 95.9% after 1000 cycles at 10C. Moreover, pouch cells and high-loading Li||NCM811 cells further verify the practical promise of the FF-enabled electrolyte for high-rate, long-cycling LMBs.
PMID:
42478335
Bibliographic data and abstract were imported from PubMed on 21 Jul 2026.
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