由於各種嚴重的環境問題，對清潔能源的需求持續增長，這正在推動學術界和工業界做出巨大努力，作為最促進清潔能源之一的水分解因此受到廣泛關注。 但是，目前的水分解受到緩慢的陽極產氧反應（OER）的限制。 儘管已知稀有材料如IrO2和RuO2是出色的OER催化劑，但其高成本和稀缺性促使研究人員尋找替代材料。在近期的研究中，FeVO4作為電催化劑可以在10mA/cm2下產生240mV的過電位，而Fe5V15O39(OH)9·9H2O(FVO)也已經被證明是具有發展前景的二次電池的正極材料。釩作為低成本的過渡金屬，其作為摻雜元素具有降低自由能的特點，並且可以改變樣品中的電化學結構；此外釩與鐵具有協同作用，可以促進電化學反應的發生。
本論文以共沉積法合成製備釩酸鐵Fe5V15O39(OH)9·9H2O(FVO)，以及通過調配Fe/V的比例來探究其隨著鐵/釩比例的變化而導致反應活性差異，並探究其原因主要是表面活性情況的不同。此外利用調控合成環境的不同pH下，研究樣品的催化活性以及分析得出合適的pH值促進了表面活性物質的生成，進而促進了OER。

Iron vanadate was synthesized by facile method for favorable electrical performance in recent literatures. The attraction of oxygen species of vanadium in nickel-iron base composite is moderate and improve OER process. Fe3+ and VOx3- has high concentration in low pH value condition that can growth like 2D structure. Here, we synthesis Fe5V15O39(OH)9·9H2O(FVO) with adjusting Fe/V ratio to get lowest overpotential η@10mA/cm2 by co-precipitation method. Based on the performance of these material, pH value was applied for modifying for large surface area in water splitting process. The obtained these electrocatalysts was evaluated the electrical performance by oxygen production test.

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