2017 Fiscal Year Final Research Report
Fundamental study of rechargeable battery under high pressure
Project/Area Number |
25420809
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
|
Research Institution | University of Hyogo |
Principal Investigator |
Maeda Kouji 兵庫県立大学, 工学研究科, 教授 (00264838)
|
Co-Investigator(Renkei-kenkyūsha) |
Kuramochi Hidetoshi 国立環境研究所, 資源循環・廃棄物研究センター, 室長 (50353537)
|
Project Period (FY) |
2013-04-01 – 2018-03-31
|
Keywords | Battery / High pressure / Crystallization / Electrolyte solution / Lead-acid battery / Nickel-hydrogen battery / Litium-ion battery |
Outline of Final Research Achievements |
High-speed charge-discharge cycle of secondary batteries of lead-acid battery, nickel-hydrogen battery and lithium-ion battery were examined under high pressure, and the influence of high pressure on various battery performances was systematically studied. As for lead-acid batteries, it was clarified that high pressure is very effective in performance of most secondary batteries owing to densification, microfabrication and good recrystallization of the active material of the electrode. In the case of nickel-hydrogen battery, it is revealed that the performance of high-speed charge-discharge cycle can be improved up to about 3 times even at about 3 MPa due to the great change in the crystal form of the active material due to solvent mediated transformation by high pressure nitrogen gas. As for lithium-ion batteries, it is also clarified that if the lithium-ion battery is stored under pressure nitrogen gas at 10 MPa, the life of the lithium ion battery will be improved.
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Free Research Field |
化学工学
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