本研究，我們在正負兩極皆使用電池材料Li3V2(PO4)3與電容材料摻氮碳材=1/1(w:w)製備成雙材料電極，組裝成混成電容器。透過X光繞射(XRD)來分析Li3V2(PO4)3的晶體結構，透過元素分析(EA)、拉曼光譜(RAMAN)與氣體吸附法(BET)來分析N-doped carbon的元素含量、石墨化程度與表面積。使用循環伏安法(CV)、恆電流充放與電化學交流阻抗(EIS)，測量單電極與混成電容器的電化學性質。
利用循環伏安法得知N-doped carbon在電位窗口為2.0 ~ 4.2 V (vs. Li/Li+)，掃描速率1mV s-1時，電容值為207.3F g-1，Li3V2(PO4)3 +摻氮碳材 =1/1(w:w)比Li3V2(PO4)3的離子擴散係數大10倍。表示加入N-doped carbon後可以提升整個系統的導電能力，降低電阻。
從Ragone plot圖得知，在電位窗口0.01 ~ 4.0 V，0.07 mA cm-2時，LVP電池系統的比能量為2.43 mWh cm-2 (35.7Wh kg-1)，比功率為0.1 mW cm-2(1.45W kg-1)；混成電容器系統的比能量為0.4 mWh cm-2 (14.1Wh kg-1 )，比功率為0.12 mW cm-2 (4.2W kg-1)。0.7 mA cm-2時，LVP電池系統的比能量為0.0035 mWh cm-2
(0.05Wh kg-1)，比功率為0.32mW cm-2(4.71W kg-1)，比功率達最高值；電容器系統的比能量為0.05mWh cm-2 (1.71Wh kg-1)，比功率為0.98mW cm-2(35.0W kg-1)。將混成電容器系統的電流密度提高至2.0 mA cm-2時，比能量為0.007mWh cm-2 (0.26Wh kg-1)，比功率為2.16mW cm-2(77.1W kg-1)，此時曲線開始趨向平緩。
充放電結果顯示，Li3V2(PO4)3加入摻氮碳材後，比功率增加，比能量降低，隨著電流密度越大，混成電容器比功率與比能量皆比單純Li3V2(PO4)3的電池系統高。

In this study, a hybrid capacitor is developed with the bi-material electrodes comprising equal amount of Li3V2(PO4)3 (LVP) and N-doped carbon. Two raw materials of LVP powder and N-doped carbon are synthesized in-house, characterized with X-ray diffraction, elemental analysis, Raman analysis, and BET analysis. The storage capabilities of the electrodes and hybrid capacitor are evaluated, using cyclic voltammetry, impedance spectroscopy, and galvanostatic charge- discharge experiments.
Diffusion coefficients of lithium ion (DLi+) are measured with the electrode made of LVP/N-doped carbon and LVP electrodes . Intriguingly, the former values of DLi+, 10-11 cm2 s-1(low potenial) and 10-9 cm2 s-1 (high potenial), are approximately ten times those of the latter, 10-12 cm2 s-1 (low potential) , 10-10 cm2 s-1 (high potential). The higher diffusion coefficient results from incorporation of a more conducting N-doped carbon, facilitating the conductivity of the electrode.
Energy and power densities of the hybrid capacitor with LVP/N-doped carbon are measured at various current densities. At 2.0 mA cm-2, the hybrid capacitor exhibits the highest specific energy and specific power of 7.0 × 10-3 mWh cm-2 (0.26 Wh kg-1) and 2.16 mW cm-2 (77.1 W kg-1), respectively. This hybrid capacitor with the bi-material electrode shows higher energy and power performance than that of a conventional battery with LVP electrodes.

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