文献类型：期刊文献

英文题名：In-situ polymerization formed self-healing quasi-solid electrolyte for high-loading lithium batteries

作者：Liu, Honghao[1];Luo, Songteng[1];Yang, Yuzi[1];Zhao, Xianming[1];Huang, Gaoxu[1];Jin, Xiaopan[1];Zhong, Tianyu[1];Guan, Mengjia[1];Liu, Jichang[2];Li, Yongsheng[1,2]

机构：[1]East China Univ Sci & Technol, Frontier Sci Ctr Mat Biol & Dynam Chem, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn,Key Lab Ultrafine Mat,Minist Ed, Shanghai 200237, Peoples R China;[2]Shihezi Univ, Sch Chem & Chem Engn, State Key Lab Incubat Base Green Proc Chem Engn, Shihezi 832003, Peoples R China

年份：2025

卷号：78

外文期刊名：ENERGY STORAGE MATERIALS

收录：;EI(收录号：20251718294209);WOS:【SCI-EXPANDED(收录号:WOS:001485011400001)】；

基金：The authors acknowledge the financial supports from Shanghai Pilot Program for Basic Research (22TQ1400100-13) , the Leading Talents in Shanghai in 2018 and the 111 project (B14018) .

语种：英文

外文关键词：Self-healing; Quasi-solid electrolyte; In-situ polymerization; High-loading electrodes; Lithium battery

摘要：High-energy-density lithium batteries face critical challenges including mechanical damage and poor electrode/electrolyte contact, which leads to discontinuous interfacial charge transfer and high interfacial resistance. To address these issues, a novel self-healing quasi-solid electrolyte (SHQSE) was synthesized through in-situ polymerization. The design employs hydroxyethyl acrylate as a molecular bridge to combine acrylates and polyurethanes with disulfide and complementary hydrogen bonds. These multiple dynamic bonds enable rapid Li+ transport (7.2 x 10(-4) S cm(-1)) and enhanced self-healing capability. Furthermore, the excellent solid electrolyte/electrode interfacial contact is achieved during cycling through in-situ polymerization, and interfacial defects caused by polymer chain exchange and reorganization are effectively repaired. Consequently, capacity retention of 62.6 % in high-loading (>10 mg cm(-2)) LiFePO4 cells and 75.5 % in LiNi0.8Mn0.1Co0.1O2 cells after 500 cycles were obtained. Additionally, the self-healing polymer (SHP) functions as ion conductive agent, and continuous Li+ transport paths formed within silicon carbon (Si/C) electrodes enable electrode integrity, achieving 74.5 % capacity retention over 200 cycles at 0.33 C. Moreover, the 2 Ah NCM811|Si/C@SHP soft pack battery with SHQSE exhibits an ultra-long cycle life and safety. This innovatively in-situ formed SHQSE offers an effective way for the development of high-performance solid-state batteries.