Study of Correlation between Ionic Transport and the Structure of Solids

离子输运与固体结构的相关性研究

• 批准号: 07239102
• 负责人: KUDO Tetsuichi
• 金额: $ 75.33万
• 依托单位: University of Tokyo, Institute of Industrial Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-07239102/
• 关键词: ionic transport property; layered oxides; perovskite framework; metal oxide clusters; LISICON; composite glass phases; neutron scattering; proton conductors; ペロブスカイト; 中性子回折; イオン拡散; 骨格型酸化物; 骨格酸化物; イオン輸送; ソフト化学; イオン導電性ガラス; パーコレーション; 磁化率; 拡

The structure of solids is one of primary factors to determine their ionic transport property. The purpose of the present study is to search the guiding principles for the development of solid matters with extraordinarily fast ionic transport through a systematic understanding about the correlation between the structure and transport properties. We selected the following three typical structures or compounds suitable for this research purpose ; (1) layered oxides, (2) the LISICON and perovskite framework structures (3) aggregates of metal oxide clusters, and (4) composite glass phases. Principal results obtained with each item are summarized as follows. (1) Chemical diffusion measurements for layered LiィイD21-xィエD2NiィイD21+xィエD2OィイD22ィエD2 showed that lithium diffusion is enhanced with decreasing nonstoichiometry (x) of the compound. (2) New LISICON type compounds in the systems LiィイD22ィエD2S-GeSィイD22ィエD2-ZnS and LiィイD22ィエD2S-GeSィイD22ィエD2-GaィイD22ィエD2SィイD23ィエD2 (thio-LISICON) have been synt … More hesized, which show very high lithium conductivity at room temperature (10ィイD1-4ィエD1ScmィイD1-1ィエD1). XAFS measurements of perovskite type proton conductors, Sr(ZrィイD20.9ィエD2YbィイD20.1ィエD2)OィイD23ィエD2 and Sr(CeィイD20.9ィエD2YbィイD20.1ィエD2)OィイD23ィエD2, revealed that the the interatomic distances (Zr-O and Yb-O) are changed by introduction of hydrogen into the compound. (3) Proton conductors based on tungsten oxide cluster aggregates with acidic functional groups have been obtained from a solution mixture of peroxo-polytungstate and oxalic acid (or malonic acid). Conductivity is increased with increasing with the ligand content and reaches 10ィイD1-3ィエD1ScmィイD1-1ィエD1 (25℃) at Ox/W=0.4. (4) The hierarchic dynamics of conductive ions in glass phases like CuI-CuィイD22ィエD2MoOィイD24ィエD2 has been revealed by various measurement techniques including the neutron scattering and the X-ray small angle scattering. Conductivity of organic-inorganic mixed glasses containing LiィイD1+ィエD1 such as LiI-(CィイD22ィエD2HィイD25ィエD2)ィイD24ィエD2NI has also been investigated. Less

固体的结构是决定其离子输运性质的主要因素之一。本研究的目的是通过系统地了解结构和输运性质之间的关系，寻找发展具有超快离子输运的固体物质的指导原则。我们选择了以下三种典型的结构或化合物：(1)层状氧化物，(2)锂离子和钙钛矿骨架结构，(3)金属氧化物团簇的聚集体，和(4)复合玻璃相。各项目取得的主要成果摘要如下。(1)层状LiィイD21-xィエD2NiィイD21+xィエD2OィイD22ィエD2的化学扩散测量表明，随着化合物非化学计量比(X)的降低，锂的扩散增强。(2)LiィイD22ィエD2S-GeSィイD22ィエD2-GaィイD22ィエD2SィイD23ィエD2(硫代锂)和LiィイD22ィエD2S-GESィイD22ィエD2-ZnS体系中新的LiSICO型化合物已合成…尺寸更大，在室温下表现出非常高的锂电导率(10ィイD1-4ィエD1ScmィイD1-1ィエD1)。X射线光电子能谱测量表明，氢气的引入改变了钙钛矿型质子导体Sr(ZrィイD20.9ィエD2YbィイD20.1ィエD2)OィイD23ィエD2和Sr(CeィイD20.9ィエD2YbィイD20.1ィエD2)OィイD23ィエD2的原子间距(Zr-O和Yb-O)。(3)从过氧多钨酸盐和草酸(或丙二酸)的溶液混合物中制备了具有酸性官能团的氧化钨团簇聚集体质子导体。电导率随配体含量的增加而增大，在Ox/W=0.4时达到10ィイD_1~(-3)ィエD_1ScmィイD_1~(-1)ィエD_1(25℃)。(4)用中子散射和X射线小角散射等测量技术揭示了CuI-CuィイD22ィエD2MoOィイD24ィエD2等玻璃相中导电离子的层次化动力学。研究了含LiィイD_1+ィエD_1的LiI-(CィイD_(22)ィエD_(2 H)ィイD_(25)ィエD_2)ィイD_(24)ィエD_2Ni等有机-无机混合玻璃的导电性。较少

项目成果

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