Research on Novel Solid Electrolytes with Magnesium Ion Conductivity

2015 Fiscal Year Final Research Report

• Project/Area Number: 26630324
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Inorganic materials/Physical properties
• Research Institution: Osaka Prefecture University
• Principal Investigator: HAYASHI Akitoshi 大阪府立大学, 工学(系)研究科(研究院), 准教授 (10364027)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 固体電解質 / マグネシウムイオン伝導体 / 全固体電池

Outline of Final Research Achievements

Sulfide solid electrolytes in the systems MgS-P2S5-MgI2 and MgS-MgBr2 were prepared by a mechanochemical technique. Their conductivities were increased by heat treatment, and the conductivity of 9×10-6 S cm-1 at 200oC was achieved at the composition 50MgS・50MgBr2 (mol%). Solid electrolytes based on P12TFSA plastic crystals or polyethylene carbonate (PEC) were prepared by the addition of Mg(TFSA)2 as a magnesium salt. Both electrolytes showed ion conducting behaviors, and a PEC electrolyte with 50wt% Mg(TFSA)2 exhibited the conductivity of 2.9×10-6 S cm-1 at 60oC.

Free Research Field

無機材料化学