尋求可再生能源一直是現代人類面臨的重大挑戰之一。在為克服這個問題而提出和探索的眾多解決方案中，析氧反應 OER 是其中之一。 OER 代表了通過水分解產生氫氣和氧氣的關鍵且方便的過程。然而，OER 的緩慢性質代表了一個瓶頸。貴金屬氧化物如 RuO2 和 IrO2 表現出優異的性能，但由於成本高且稀缺，不適合實際的大規模生產。因此，現在正在探索非貴金屬氧化物。因此，在此，我們通過快速簡便的化學浴沉積報告了一種基於 Fe、V、Cr、Ti 的高熵鎳基（羥基）氫氧化物。這種新型催化劑可在室溫下在工業泡沫鎳上輕鬆製備，無需使用任何還原劑或氧化劑。通過以下測試對材料進行表徵： 進行 X 射線衍射以研究材料的晶體結構；拉曼光譜研究微觀結構； X 射線光電子能譜 (XPS) 以研究其表面化學。通過掃描電子顯微鏡 (SEM) 和透射電子顯微鏡 (TEM) 獲得形態和結構信息。在 1M KOH 中進行電化學阻抗譜、線性掃描伏安法以研究材料的電化學性質。在 ≤ 300 mV 的低過電位和 68 的低 Tafel 斜率下，獲得了 400 mA.cm-2 的電流密度。這種 Ni(OH)2/NiOOH 在室溫條件下很容易製備。這種材料不僅快速簡便，而且具有成本效益和環保性。

The quest for renewable energy has been one of the grand challenges facing humanity in modern times. Among the numerous solutions proposed and explored to overcome this issue, is oxygen evolution reaction OER. OER represents a key and convenient process to generate hydrogen and oxygen through water splitting. However, the sluggish nature of the OER represents a bottleneck. Precious metal oxides such as RuO2 and IrO2 have exhibited excellent performance, but they are not suitable for practical large-scale production owing to their high cost and scarcity. As a result, non-precious metal oxides are now being explored. Herein, we therefore report a multi-metal nickel-based (oxy)hydroxide based on Fe, V, Cr, Ti through a fast and facile chemical bath deposition. This new catalyst is easily prepared on industrial nickel foam under room temperature without the use of any reducing or oxidizing agent. The material was characterized by means of the following tests: X-ray diffractometry was performed to study the crystalline structure of the material; Raman spectroscopy to investigate the microstructure; X-ray photoelectron spectroscopy (XPS) to study its surface chemistry. Morphology and structural information were obtained by means of scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Electrochemical impedance spectroscopy, linear scan voltammetry in 1M KOH were performed to study the material’s electrochemical properties. With low overpotentials ≤ 300 mV and a low Tafel slope of 43, a current density of 453 mA.cm-2 was obtained. This NiOOH is easily prepared under room temperature condition. This material is not only fast and facile, but also cost-effective and eco-friendly.

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