| Budget Amount *help |
¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2016: ¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000)
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| Outline of Final Research Achievements |
Hydro-closo-borates composed of the [B12H12]2－ closo-borate anions exhibit superionic conductivities on the order of 0.1 S/cm after the order-disorder transitions. From the application point of view, it is highly desirable to enhance the conductivities at room temperature. In this study, we have found out combining [B12H12]2－ with [NH2]- and partial dehydrogenation are effective in modifying the conductivities of hydro-closo-borates. Na2B12H12 + NaNH2 shows the highest sodium ionic conductivity of 1×10(-6) S/cm at room temperature in this system. In the case of Na2B10H10, the conductivity is also increased to 3×10(-5) S/cm when mixed with NaNH2 at molar ratio of 3:1. Moreover, the conductivity of Li2B12H12 increases to 2×10(-5) S/cm from 6×10(-7) S/cm by partial dehydrogenation.
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