| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
In this study, we aimed to develop solid-state electrolytes that ensure safety and are easy to handle compared to the conventional liquid electrolytes for application into all-solid-state multivalent-ion batteries. The solid-state electrolytes developed are (1) quasi-solid-state electrolyte comprised of room-temperature ionic liquid and fumed silica nanoparticles, and (2) complex hydrides. In addition to these, we also have developed a technique for preparation of elemental sulfur and carbon conductive additives. As model systems, we assembled all-solid-state lithium-sulfur batteries, and their performances were evaluated. They had high energy density and allows for repeated operations of charge and discharge. We will further explore the materials that has high magnesium-ion conductivities, and incorporate them into solid-state devices in future studies.
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