硫化
弹性体
材料科学
离子电导率
锂(药物)
天然橡胶
电解质
耐久性
电化学
离子键合
复合材料
化学工程
化学
离子
电极
有机化学
工程类
内分泌学
医学
物理化学
作者
Yongzheng Shi,Na Yang,Jin Niu,Shubin Yang,Feng Wang
标识
DOI:10.1002/advs.202200553
摘要
Abstract Elastomers offer attractive advantages over classical solid‐state electrolytes in terms of ensuring stable interfacial contact and maintaining fatigue durability, but the low ionic conductivity obstructs their practical applications in long‐life lithium metal batteries. In this work, rubber‐derived lithium‐conducting elastomer has been developed via sulfur vulcanization of nitrile butadiene rubber with a polymerizable ionic liquid to provide both high resilience and dramatically improved ionic conductivity. Owing to the chemically crosslinked network between rubber chains and ionic liquid fragments generated during vulcanization, the elastic lithium‐conductor achieves high resilience of 0.92 MJ m −3 , superior cyclic durability of 1000 cycles at 50% strain, and high room‐temperature ionic conductivity of 2.7 × 10 −4 S cm −1 . Consequently, the corresponding solid‐state lithium/LiFePO 4 battery exhibits a high capacity of ≈146 mAh g −1 with a high capacity retention of 94.3% for up to 300 cycles.
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