本研究探討在BMP-DCA(N-methyl-N-methylpyrrolidinium dicyanamide)之Co(Ⅱ)與Co(Ⅱ)/P混和溶液中的電化學行為，以GC、Pt電極並且在不同溫度及不同掃描速率下討論Co(Ⅱ)與Co(Ⅱ)/P混和溶液在離子液體中電化學行為。並以銅為基材在不同電位下沉積Co及CoP化合物，並且使用電子顯微鏡(SEM)及元素分析(EDS)觀察鍍層表面型態以及組成。最後以電沉積所的之CoP化合物在鹼性溶液中進行水的電解，結果顯示在含有29%的CoP合金對於氧氣生成反應(OER)具較良好的催化效果，而含有19%與29%的CoP對於HER比較有明顯的催化。

In this study, the electrochemical behavior of Co(II) and the mixtures of Co(II) -hypophosphite (H2PO2-) were investigated on platinum (Pt), glassy carbon (GC) electrodes by using various electrochemical techniques in N-butyl-N-methylpyrrolidinium dicyanamide room temperature ionic liquid[1] (BMP-DCA RTIL).
Co(II) species were introduced into BMP-DCA by the addition of CoSO4·7H2O or anodic dissolution of Co metal. In the Co(II) containing solutions, NaH2PO2 was introduced as the source of P and various mixtures of Co(II) and H2PO2- were prepared.
Electrodeposition of Co metal and CoP compounds were achieved by potentiostatic electrolysis and the effect of the applied potentials on the compositions of CoP was carefully studied.
The surface morphology and composition of all the electrodeposited samples were characterized using scanning electron microscope (SEM) and energy dispersive spectrometry (EDS), respectively.
The electrocatalytic activity of the CoP compounds toward the oxygen reduction reaction (ORR) was studied.

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