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- W4380320382 abstract "Linear polymer (e.g. polyethylene oxide, PEO) based electrolytes have been widely studied due to their flexibility and relatively good contact against electrodes. However, the linear polymers are prone to crystallization at room temperature and melting at moderate temperature, restricting their application in lithium metal batteries. To address these problems, a self-catalyzed crosslinked polymer electrolyte (CPE) was designed and prepared by the reaction of poly (ethylene glycol diglycidyl ether) (PEGDGE) and polyoxypropylenediamine (PPO) with only the bistrifluoromethanesulfonimide lithium salt (LiTFSI) added and with no any initiators. LiTFSI catalyzed the reaction by reducing the activation energy to form a crosslinked network structure, which was identified by calculation, NMR and FTIR. The as-prepared CPE has high resilience and a low glass transition temperature (Tg = -60 °C). Meanwhile, the solvent-free in-situ polymerization technique has been adopted in the assembly of the CPE with electrodes to decrease the interfacial impedance greatly and improve the ionic conductivity to 2.05 × 10-5 S cm-1 and 2.55 × 10-4 S cm-1 at room temperature and 75 °C, respectively. As a result, the in-situ LiFeO4/CPE/Li battery exhibits outstanding thermal and electrochemical stability at 75 °C. Our work has proposed an initiator-free and solvent-free in-situ self-catalyzed strategy of preparing high performance crosslinked solid polymer electrolytes." @default.
- W4380320382 created "2023-06-13" @default.
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- W4380320382 date "2023-10-01" @default.
- W4380320382 modified "2023-09-27" @default.
- W4380320382 title "An Initiator-Free and Solvent-Free In-Situ Self-Catalyzed Crosslinked Polymer Electrolyte for All-Solid-State Lithium-Metal Batteries" @default.
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- W4380320382 doi "https://doi.org/10.1016/j.jcis.2023.06.059" @default.
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