| Budget Amount *help |
¥19,110,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥4,410,000)
Fiscal Year 2010: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2008: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
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| Research Abstract |
A composite of γ-Fe_2O_3 and ketjenblack was successfully fabricated to exhibite 125mA hg^<-1> of specific capacity in rapidly discharging and charging at the current density of 10A g^<-1>. From ac-impedance measurements the contribution of a faradaic reaction and a non-faradaic reaction, which forms electric double layer, to observed total capacity was separately estimated. At the same time, chemical diffusion coefficient of lithium in γ-Fe_2O_3 was also determined. Furthermore, γ-Fe_2O_3 was found to serve as an active material originating pseudo-capacitance for a cathode of electrochemical capacitors.
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