| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Outline of Final Research Achievements |
This study was mainly focused on an elucidation of reaction mechanism for conversion-type anode materials which enables anomalous long cycles. Using SnO2 and Mn3O4 as model materials, the complete encapsulation of 5-10 nm metal oxides nanoparticles is the essential factor to attain the reversible conversion reaction. in situ EXAFS analysis confirmed that disappearance and reappearance of Sn-O or Mn-O bonding during charge-discharge process occurred reversibly. Furthermore, Li3VO4 and its reaction mechanism were studied as an another model material which enables long cycle life without any encapsulation.
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