2016 Fiscal Year Final Research Report
Development of Novel Electrochemical Capacitor Using Discharged Graphite-fluoride Lithium Primary Battery
| Project/Area Number |
26410250
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Device related chemistry
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| Research Institution | Gunma University |
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Principal Investigator |
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| Research Collaborator |
FUJIMOTO Hiroyuki 大阪ガス株式会社, シニアリサーチャー
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 電気化学キャパシタ / リチウム一次電池 / フッ化黒鉛 |
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| Outline of Final Research Achievements |
Graphite fluoride is a graphite intercalation compounds and used as lubricate and cathode material of primary battery. The graphite fluoride-lithium primary (GF-Li) battery has been commercially used because of its high energy density, excellent discharge performance, and low self-discharge property.
The research representative found that the discharged GF-Li battery can be re-charged as new hybrid electrochemical capacitor (Graphite-fluoride Lithium Capacitor: GF-Li Cap.) In this project, the research representative succeeds in realizing the GF-Li Cap. with about 40 Wh L-1 volumetric energy density (normalized by the volume of negative and positive electrodes) and more than 1000 charge-discharge cycle-ability. Additionally, it has been revealed that the positive electrode (discharged graphite-fluoride electrode of GF-Li battery) is charge-discharged as capacitor electrode mainly by electrochemical desorption/adsorption of Li+ cation.
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| Free Research Field |
炭素材料化学・工業電気化学
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