Mechanistic clarification and de/rehydrogenation improvement of complex hydrides by nanospace
Project/Area Number |
25709067
|
Research Category |
Grant-in-Aid for Young Scientists (A)
|
Allocation Type | Partial Multi-year Fund |
Research Field |
Structural/Functional materials
|
Research Institution | Kyushu University |
Principal Investigator |
LI HAIWEN 九州大学, 水素エネルギー国際研究センター, 准教授 (40400410)
|
Co-Investigator(Renkei-kenkyūsha) |
AKIBA ETSUO 九州大学, 工学研究院, 教授 (90356345)
|
Research Collaborator |
HE LIQING
|
Project Period (FY) |
2013-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥20,800,000 (Direct Cost: ¥16,000,000、Indirect Cost: ¥4,800,000)
Fiscal Year 2015: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2013: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
|
Keywords | 水素化物 / イオン電導 / 水素貯蔵 / イオン伝導 |
Outline of Final Research Achievements |
The improvement effects of nanoconfinement on the de/re-hydrogenation of LiBH4 and 0.68LiBH4-0.32Ca(BH4)2 were systematically investigated. It was found that the 1st dehydrogenation temperature was reduced by the nanoconfinement, whereas such effect disappeared from the 2nd cycle. Anhydrous M(B12H12)n/2, the dehydrogenation intermediate of M(BH4)n was successfully synthesized by sintering of M(BH4)n and B10H14 with stoichiometric molar ratio. Thermal decomposition of M(B12H12)n/2 was proved to proceed in 2 steps, i.e. 1) formation of hydrogen deficient [B12H12-x]n- and 2) formation of polymer comprised of [BxHy]n-. M(B12H12)n/2 was found to exhibit superionic conductivity at its high temperature phase. For example, the ionic conductivity of LiNaB12H12 at 550 K reaches 0.79 S/cm, which is approximately 8 times higher than that of Na2B12H12 and 11 times higher than that of Li2B12H12, suggesting the high potentiality of M(B12H12)n/2 as solid electrolyte.
|
Report
(5 results)
Research Products
(43 results)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] ダブルメタルドデカボレートLiNaB12H12の超イオン伝導機能2016
Author(s)
李 海文, HE Liqing, 中島 裕典, NIKOLAY Tumanov, FILINCHUK Yaroslav, HWANG Sonjong, MANISH Sharma, HAGEMANN Hans, 秋葉 悦男
Organizer
日本金属学会2016年春期大会
Place of Presentation
東京
Year and Date
2016-03-23
Related Report
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Book] 水素の事典2014
Author(s)
李海文, 折茂慎一,竹下博之
Total Pages
704
Publisher
朝倉書店
Related Report
-
-
-