Recent developments in oxide ion conductors: focusing on Dion‐Jacobson phases
Recent developments in oxide ion conductors: focusing on Dion‐Jacobson phases
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氧化物离子导体的最新进展：关注迪翁-雅各布森相
DOI：
10.1039/d2cc05288a
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发表时间：
2023
影响因子：
4.9
通讯作者：
Yashima Masatomo
中科院分区：
文献类型：
--
作者：
Zhang Wenrui;Yashima Masatomo
氧化离子导体，也被称为“氧离子导体”，近年来由于其广泛应用于各种电化学装置，包括氧浓缩器、固体氧化物燃料电池（sofc）和固体氧化物电解电池，引起了极大的关注。提高这些器件性能的关键是创造新的氧化离子导体。在这篇专题文章中，我们讨论了氧化离子导体的新结构家族和dion - jacobson型层状氧化离子导体的最新进展，特别强调了CsM2Ti2NbO10−δ （M = Bi和镧系，δ表示氧空位含量）及其固溶体。CsBi2Ti2NbO10−δ是第一个具有dion - jacobson型层状钙钛矿结构的氧化离子导体，本文提取了这些材料的结构特征。我们提出了一个原始的概念，即大尺寸的Cs+阳离子和M3+位移产生了氧化离子迁移的大瓶颈，这将有助于发现新的氧化离子导体。本文提供了证据，证明dion - jacobson型层状钙钛矿是优良的氧化离子导体。我们还展示了从这些研究中收集到的信息如何应用于新型氧化离子导体的设计。
Oxide-ion conductors, also known as “oxygen ion conductors,” have garnered significant attention in recent years due to their extensive applications in a variety of electrochemical devices, including oxygen concentrators, solid-oxide fuel cells (SOFCs), and solid oxide electrolysis cells. The key to improving the performance of these devices is the creation of novel oxide-ion conductors. In this feature article, we discuss the recent developments of new structural families of oxide-ion conductors and of the Dion–Jacobson-type layered oxide-ion conductors with a particular emphasis on CsM2Ti2NbO10−δ (M = Bi and lanthanoids; δ represents oxygen-vacancy content) and their solid solutions. CsBi2Ti2NbO10−δ is the first example of an oxide-ion conductor with a Dion–Jacobson-type layered perovskite structure, and the structural characteristics of these materials are extracted here. We have proposed an original concept that the large sized Cs+ cations and M3+ displacements yield the large bottlenecks for oxide-ion migration, which would facilitate the discovery of novel oxide-ion conductors. This article presents evidence that Dion–Jacobson-type layered perovskites are superior oxide-ion conductors. We also demonstrate how the information gleaned from these studies can be applied to the design of novel oxide-ion conductors.