A Trade-Off-Free Fluorosulfate-Based Flame-Retardant Electrolyte Additive for High-Energy Lithium Batteries
Abstract
The flammability of organic electrolytes raises increasing safety concerns about the high-capacity batteries of next-generation electric vehicles and smart grid systems. Herein, we report a synthetic dual-functional electrolyte additive bearing two-fold fluorosulfate moieties, which allows flame retardancy without sacrificing battery performance. Electrochemical performance is measured using a high-capacity cell built with Ni-rich LiNi 0.9 Co 0.05 Mn 0.05 O 2 cathode and lithium metal anode. Compared with triphenyl phosphate, which is a known representative flame-retardant, the fluorosulfate-based electrolyte additive shows remarkable capacity retention, reduced interfacial resistance, and enhanced rate capability via the formation of a stable cathode solid electrolyte interfacial layer due to the inflammable sulfite-to-sulfate conversion mechanism.
Fields of Study & Subjects
Advanced Battery Materials and Technologies
Advancements in Battery Materials
Publication details
- Journal / source
- ECS Meeting Abstracts
- Publisher
- The Electrochemical Society
- Volume
- MA2026-01
- Issue
- 3
- Pages
- 262–262
- Publication date
- 7 July 2026
- Language
- EN