| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
All-solid-state Li batteries are expected to become the next generation batteries owing to their improved safety, larger capacity, and higher output relative to present batteries based on liquid electrolytes. One of the major drawbacks for the practical use of all-solid-state batteries is their large interface resistance at the solid electrolyte and electrode interface. In this study, we fabricated all-solid-state thin film batteries by stacking cathode, solid-electrolyte, and anode thin films. We obtained a remarkably low interface resistance when the electrolyte films were deposited in an off-axis sputtering configuration. The key to obtaining a low interface resistance with low activation energy is to reduce sputtering damage by using an off-axis sputtering configuration. The low interface resistance obtained implies that the negative space-charge layer effect is negligible in the solid-electrolyte/electrode interface.
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