2013 Fiscal Year Final Research Report
Development of vanadate glass as a new cathode material for secondary batteries
| Project/Area Number |
23550229
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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 |
Inorganic industrial materials
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| Research Institution | Tokyo Metropolitan University |
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Principal Investigator |
KUBUKI Shiro 首都大学東京, 理工学研究科, 准教授 (90321489)
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| Co-Investigator(Renkei-kenkyūsha) |
NISHIDA Tetsuaki 近畿大学, 工学部, 教授 (10112286)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 二次電池 / 正極材料 / バナジン酸塩ガラス / メスバウアー分光法 |
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| Research Abstract |
A relationship between local structure and electrical conductivity of new vanadate glasses was investigated by 57Fe-Mossbauer spectroscopy, X-ray diffractometory(XRD), Fourier transformed infrared spectroscopy(FT-IR) and DC four- and two-probe method. It was revealed that a coin cell containing isothermally annealed 15Li2O-10Fe2O3-5P2O5-70V2O5 glass as a cathodeactive material showed high capacity of 500mAh/g. The higher electrical performance was observed at least 8 cycles. We could successfully develope a new vanadate glass exhibiting the higher electrical performance when it is applied as a cathode active materialof secondary battery.
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