Thin film of lithium magnesium silicates and its electrical conductivity.

硅酸锂镁薄膜及其电导率。

• 批准号: 62550559
• 负责人: WAKIHARA Masataka
• 金额: $ 1.28万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62550559/
• 关键词: lithium ion conductor; solid solution of lithium-magnesium silicate; 全固体型リチウム二次電池; ケイ酸リチウムマグネシウム薄膜

Solid solutions Li_<4-2X>Mg_XSiO_4 in the system were synthesized at 1000 C. The single phase region extended up to x=0.5. Preparation of thin films of the solid solutions was tried by making use of 1) Vaporization method, 2) Super cooling method and 3) Sputtering method. The best film in the present study was prepared by the sputtering method. The thickness was about 1 m. The electrical conductivity of the film was 2X10^<-5> S・cm^<-1> at 200 C, rising to 10^<-1> S・cm^<-1> at 500 C. Since the prepared film is stable in air, and retain their conductivity over a long period of time, it would be useful as the solid electrolyte for a compact lithium secondary battery working at high temperature.

在1000℃下，合成了该体系中的Li_<4-2X>Mg_XSiO_4固溶体。采用1)汽化法、2)过冷法和3)溅射法制备了固溶体薄膜。用溅射法制备了本研究中最好的薄膜。厚度约1 m。该薄膜的电导率在200℃时为2X10^<-5> S·cm^<-1>，在500℃时上升到10^<-1> S·cm^<-1>。由于制备的薄膜在空气中稳定，并且在很长一段时间内保持其电导率，因此它可以作为高温下工作的紧凑锂二次电池的固体电解质。

项目成果

Masataka Wakihara; Takashi Uchida; Tsuyoshi Gohara: "Ionic conductivity of Li_<4-2x>Mg_xSiO_4" Solid State Ionics. 31. 17-20 (1988)

胁原正孝；

WAKIHARA MASATAKA.;UCHIDA TAKASHI.;GOHARA TSUYOSHI: Solid State Ionics. 31. 17-20 (1988)

WAKIHARA MASATAKA.；UCHIDA TAKASHI.；GOHARA TSUYOSHI：固态离子学。

WAKIHARA,MASATAKA;UCHIDA,TAKASHI;GOHARA,TSUYOSHI: Solid State Ionics. 31. 17-20 (1988)

WAKIHARA，MASATAKA；UCHIDA，TAKASHI；GOHARA，TSUYOSHI：固态离子学。

M. Wakihara;T. Uchida;T. Gohara;M. Taniguchi: Solid State Ionics.

M.胁原；T.