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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Intercalation materials for secondary batteries based on alkali metal exchange: developments and perspectives
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Intercalation materials for secondary batteries based on alkali metal exchange: developments and perspectives

机译：基于碱金属交换的二次电池嵌入材料：发展与观点

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摘要

Chemical and electrochemical alkali metal exchange (AME) techniques are powerful tools to synthesize and investigate active materials for secondary Li-, Na- and K- or mixed-ion batteries. AME can provide fundamental insights regarding the differences of Li-, Na- and K-ion analogue intercalation materials with respect to important battery performance metrics as well as kinetics, thermodynamics, phase transition behavior,etc.For this purpose, the alkali-ions stored inside an intercalation material are (electro)chemically extracted and replaced by another ionic species. This procedure can allow preservation of a desired (metastable) host structure or preparation of mixed ionic species that cannot be obtained by common solid-state or hydrothermal synthesis routes. Herein, recent insights and research trends related to the AME in intercalation hosts for secondary batteries are reviewed. The fundamentals of AME techniques are presented and discussed regarding individual advantages and disadvantages. Recent results obtained from AME are reported for different classes of intercalation materials, particularly polyanionic compounds, layered oxides and spinel oxides. The main differences found for the different crystal structures and promising perspectives related to AME processes are highlighted.
机译：化学和电化学碱金属交换（AME）技术是合成和研究二次Li-，Na-和K-或混合离子电池的活性材料的强力工具。 AME可以为重要的电池性能指标以及动力学，热力学，相转变行为等提供LI-，NA和K离子模拟嵌入材料的差异。储存的碱金属离子等在嵌入材料内部（电托）是化学提取的并被另一种离子物种替换的。该方法可以允许保存所需的（亚稳态）宿主结构或制备不能通过普通固态或水热合成途径获得的混合离子物质。在此，综述了与二次电池嵌入主机中的AME相关的最近见解和研究趋势。提出并讨论了AME技术的基础知识，关于个性的优势和缺点。据报道了从AME获得的近期结果，用于不同类别的嵌入材料，特别是聚阴离子化合物，层状氧化物和尖晶石氧化物。突出了针对不同晶体结构的主要差异和与AME过程相关的前景。

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