Research on high functional nano-structure in lithium ionic conductor

锂离子导体高功能纳米结构研究

• 批准号: 15510104
• 负责人: INOUE Naoki
• 金额: $ 1.34万
• 依托单位: Ehime University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15510104/
• 关键词: lithium ionic conductor; fine particle dispersion; electric conduction; Rietveld analysis; NMR; cluster model; electronic calculation; 球共振法; 電子状態

We studied the high functional nano-structure in lithium ionic conductor using fine particle mixtures and B-site substitutions. The obtained results are summarized the followings.1.Fine particle (TiO_2 particle size 0.05μm) mixturesWe observed the conductivity enhancement of about 30% in the region of 10-40% TiO_2 concentration in lithium ionic conductor. The observation of SEM showed the fine particles included changed to the grain of about 10μm. This resulted from high sintered temperature. We need further research to improve the conductivity enhancement.2.B site substitution effect.We observed the B-site substitution effect of ionic conductor to improve the ionic conduction. We used Al, P, W, Zr, Mg species to substitute B-site. Al and P substitutions improved the conductivity, but W, Zr and Mg. Further researches are needed to understand the mechanism.3.We studied the electronic structure by DV-X α method. The result obtained in the electronic structure was applied to interpret the ^7Li chemical shift of NMR. That was successful.

我们利用细颗粒混合物和B位取代研究了锂离子导体的高功能纳米结构，所得结果总结如下：1.细颗粒（TiO_2粒径0.05μm）混合物我们观察到电导率提高了约30％。锂离子导体中TiO_2浓度在10-40%范围内,SEM观察发现所含细颗粒转变为约粒径的颗粒。 10μm。这是由于高烧结温度导致的。我们需要进一步研究以提高电导率。2.B位取代效应。我们观察到离子导体的B位取代效应，以提高离子电导率。 、Zr、Mg物种取代Al和P取代提高了电导率，但W、Zr和Mg需要进一步研究以了解其机理。3.我们通过DV-X α研究了电子结构。方法将电子结构中获得的结果应用于解释NMR的^7Li化学位移。

项目成果

Inoic conduction and chemical bonds of Li ion in La_<4/3-y>Li_<3y>Ti_2O_6

La_<4/3-y>Li_<3y>Ti_2O_6中Li离子的离子传导与化学键

• 发表时间: 2005
• 期刊: Ionics 11・1-2
• 作者: Takashi Ikegawa;Yukio Takahashi;Naoki Inoue
• 通讯作者: Naoki Inoue

Electronic structure and lithium ion migration of La_<4/3-y>Li_<3y>Ti_2O_6 using cluster model

基于团簇模型的La_<4/3-y>Li_<3y>Ti_2O_6的电子结构和锂离子迁移

• 发表时间: 2005
• 期刊: Solid State Ionics 176
• 作者: Toshihisa Ozawa;Nariaki Takahashi;Yukio Takahashi;Naoki Inoue
• 通讯作者: Naoki Inoue

Ionic conduction and ^<27>Al MAS/NMR of B-site Al ion substitution in La_<4/3-y>Li_<3y>Ti_2O_6

La_<4/3-y>Li_<3y>Ti_2O_6中B位Al离子取代的离子传导及^<27>Al MAS/NMR

• 发表时间: 2005
• 期刊: Solid State Ionics 176
• 作者: Nariaki Takahashi;Toshihisa Ozawa;Yukio Takahashi;Yanhui Zou
• 通讯作者: Yanhui Zou

Electronic Structure and Lithium Ion Migration of La_<4/3-y>Li_<3y>Ti_2O_6 sing Cluster Model

La_<4/3-y>Li_<3y>Ti_2O_6单团簇模型的电子结构和锂离子迁移

• 发表时间: 2005
• 期刊: Solid State Ionics (In press)
• 作者: 池川隆司;高橋幸雄;N.Inoue
• 通讯作者: N.Inoue

Electronic structure and lithium ion migration of La_<4/3-y>Li_<3y>Ti_2O_6 using cluster model.

基于团簇模型的La_<4/3-y>Li_<3y>Ti_2O_6的电子结构和锂离子迁移。

• 发表时间: 2005
• 期刊: Solid State Ionics 176
• 作者: K.Katou;N.Makimoto;Y.Takahashi;Naoki Inoue
• 通讯作者: Naoki Inoue