| Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2008: ¥13,780,000 (Direct Cost: ¥10,600,000、Indirect Cost: ¥3,180,000)
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| Research Abstract |
The electrochemical performances of micron-sized (av.>7μm) carbon-free LiFePO_4 was improved by the novel nitrogen doping. Nitrogen-doped LiFePO_4 (LiFePO_4-N) exhibited discharge capacity of 90 mAhg^<-1>, which is ca.1.5 times higher than that of C-free LiFePO_4 at 1 mAcm^<-2>, 20℃. This improvement was considered as the result of the lattice modification through the partial nitrogen substitution for oxygen, which might leads to the enhanced Li^+ ion diffusivity.
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