2014 Fiscal Year Final Research Report
Control of physical properties in transition-metal oxides by electrochemical doping
| Project/Area Number |
23684022
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Research Collaborator |
MORITOMO Yutaka 筑波大学, 数理物質系, 教授 (00283466)
SHIBATA Takayuki 筑波大学, 数理物質系, 研究員 (30758264)
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| Project Period (FY) |
2011-04-01 – 2015-03-31
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| Keywords | 強相関電子 / ナトリウムイオン電池 / 酸化物エレクトロニクス |
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| Outline of Final Research Achievements |
We have developed novel materials by using electrochemical doping. We have found that NaxMO2 (M=Mn, Co) exhibits larger diffusion coefficient (D) than that of LiCoO2, which realizes a sodium-ion-secondary battery with high rate properties. A Li+ intercalation into Bi2Sr2CaCu2O8+d causes a clear enhancement of superconducting transition temperature from 75 K to 90 K. We have also invented thermo-electrochemical cell (thermocell) that converts heat into electrocity by electrochemical Seebeck effect.
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| Free Research Field |
物性物理学
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