Liu Yuan, Xu Bingqing, Zhang Wenyu, Li Liangliang, Lin Yuanhua, Nan Cewen
State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.
Small. 2020 Apr;16(15):e1902813. doi: 10.1002/smll.201902813. Epub 2019 Oct 9.
Owing to their safety, high energy density, and long cycling life, all-solid-state lithium batteries (ASSLBs) have been identified as promising systems to power portable electronic devices and electric vehicles. Developing high-performance solid-state electrolytes is vital for the successful commercialization of ASSLBs. In particular, polymer-based composite solid electrolytes (PCSEs), derived from the incorporation of inorganic fillers into polymer solid electrolytes, have emerged as one of the most promising electrolyte candidates for ASSLBs because they can synergistically integrate many merits from their components. The development of PCSEs is summarized. Their major components, including typical polymer matrices and diverse inorganic fillers, are reviewed in detail. The effects of fillers on their ionic conductivity, mechanical strength, thermal/interfacial stability and possible Li -conductive mechanisms are discussed. Recent progress in a number of rationally constructed PCSEs by compositional and structural modulation based on different design concepts is introduced. Successful applications of PCSEs in various lithium-battery systems including lithium-sulfur and lithium-gas batteries are evaluated. Finally, the challenges and future perspectives for developing high-performance PCSEs are proposed.
由于其安全性、高能量密度和长循环寿命，全固态锂电池（ASSLB）已被视为为便携式电子设备和电动汽车供电的有前景的系统。开发高性能固态电解质对于ASSLB的成功商业化至关重要。特别是，通过将无机填料掺入聚合物固体电解质中得到的聚合物基复合固态电解质（PCSE），已成为ASSLB最有前景的电解质候选材料之一，因为它们可以协同整合其组分的许多优点。总结了PCSE的发展情况。详细综述了它们的主要成分，包括典型的聚合物基体和各种无机填料。讨论了填料对其离子电导率、机械强度、热/界面稳定性以及可能的锂传导机制的影响。介绍了基于不同设计概念通过成分和结构调制合理构建的一些PCSE的最新进展。评估了PCSE在包括锂硫电池和锂气体电池在内的各种锂电池系统中的成功应用。最后，提出了开发高性能PCSE的挑战和未来展望。
