Mobile Ions in Composite Solids
Mobile Ions in Composite Solids
复制标题
复合固体中的移动离子
DOI：
10.1021/acs.chemrev.9b00760
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发表时间：
2020
期刊：
影响因子：
62.1
通讯作者：
Shi Siqi
中科院分区：
文献类型：
--
作者：
Zou Zheyi;Li Yajie;Lu Ziheng;Wang Da;Cui Yanhua;Guo Bingkun;Li Yuanji;Liang Xinmiao;Feng Jiwen;Li Hong;Nan Ce-Wen;Arm;Michel;Chen Liquan;Xu Kang;Shi Siqi
固态基质中的快速离子传导构成了使用固体电解质（SE）的广谱电化学系统的基础，其示例包括固态电池（SSB）、固体氧化物燃料电池（SOFC）和多样化的气体传感器。混合不同的固体导体以形成复合固体电解质（CSE）为SE引入了独特的机会，使其具有远上级其单独的母体固体的卓越的整体性能，这要归功于由此产生的新界面处的丰富的化学和物理性质。在这篇综述中，我们提供了一个全面和深入的检查的发展和理解的CSE的SSB，特别关注其物理化学性质和离子传输机制。CSE相对于其单相父母的离子电导率增强的起源进行了讨论的背景下，缺陷化学和界面反应。离子运动在各种复合材料的模型/理论进行了严格审查，询问一个一般的策略，以设计新型CSE，而性能，如机械强度和电化学稳定性进行了讨论，鉴于其在锂金属电池和超越的前景应用。作为理解离子如何与其复合环境相互作用的一个组成部分，还总结了用于探测跨不同时间和空间时间尺度的离子输运动力学的表征技术。
Fast ion conduction in solid-state matrices constitutes the foundation for a wide spectrum of electrochemical systems that use solid electrolytes (SEs), examples of which include solid-state batteries (SSBs), solid oxide fuel cells (SOFCs), and diversified gas sensors. Mixing different solid conductors to form composite solid electrolytes (CSEs) introduces unique opportunities for SEs to possess exceptional overall performance far superior to their individual parental solids, thanks to the abundant chemistry and physics at the new interfaces thus created. In this review, we provide a comprehensive and in-depth examination of the development and understanding of CSEs for SSBs, with special focus on their physiochemical properties and mechanisms of ion transport therein. The origin of the enhanced ionic conductivity in CSEs relative to their single-phase parents is discussed in the context of defect chemistry and interfacial reactions. The models/theories for ion movement in diversified composites are critically reviewed to interrogate a general strategy to the design of novel CSEs, while properties such as mechanical strength and electrochemical stability are discussed in view of their perspective applications in lithium metal batteries and beyond. As an integral component of understanding how ions interact with their composite environments, characterization techniques to probe the ion transport kinetics across different temporal and spatial time scales are also summarized.