人類面臨的最關鍵問題之一是尋找替代能源。其中一種解決方案是通過水的分解產生氫氣和氧氣，其中氧氣釋放反應（OER）過程十分緩慢，是水分解的瓶頸反應。為了提高氧氣釋放反應效率，則以尋求非貴金屬為基的催化劑為目標。因此，我們提出了一種新型的Fe5V15O39(OH)9•9H2O (FVO)催化劑。該實驗在90⁰C的條件下進行濕法混合。我們通過觀察粉末以及電極的X射線繞射結果分析CV過程中的相變情況，並且利用X射線光電子能譜測定樣品中鐵和釩的含量。通過掃面電子顯微鏡和穿透式電子顯微鏡分析獲得形貌以及結構信息。電化學特性通過樣品在濃度為1M 的KOH溶液中利用電化學阻抗譜，線性掃描伏安法和計時電流法測得。最好的結果表明，CV蝕刻並用FeCl3浸漬的FVO材料具有139mv的低過電位，在270mV的轉換效率為0.361，Tafel斜率為43.8mA/dec，電化學表面活性（ECSA）為2.99mF/cm2。
這種FVO材料由於其價格低廉，地球蘊含豐富，並且在OER方面具有良好的電性能，是十分具有前途的材料。

Searching for alternative energy is one of the most critical issues that humans are facing. A solution is to generate hydrogen and oxygen through water splitting, in which oxygen evolution reaction (OER) is the sluggish and therefore a bottle neck step. To enhance the OER, advanced catalysts, especially catalyst based non-noble metals, are being sought. Herein, we report a novel Fe5V15O39(OH)9.9H2O (FVO) catalyst. This experiment using wet-mixing method under 90⁰C. We conduct X-ray diffraction in powder and electrode to observe the phase evolution during the CV. X-ray photoelectron spectroscopy was used to the content of Fe and V. Morphology and structural information were obtained by using the scanning electron microscope and transmission electron analysis. Electrochemical properties can be obtained by electrochemical impedance spectroscopy, linear scan voltammetry, and chronoamperometry in 1M KOH. The best result shows that CV etched FVO dipping FeCl3 obtained low overpotential 139mV in 10mA/cm2, Turnover frequency in 270mV is 0.361, Tafel slope 43.8mA/dec and electrochemical surface activity (ECSA) 2.99mF/cm2. This FVO material is very promising material since the material is cheap, abundant, and possess good electrical properties for OER.

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