The greatest challenge of the 21st century is to develop renewable systems of energy, which are efficient, environmentally friendly, and scalable. In this context, production of hydrogen and oxygen from electrolysis of water is a smart approach. Its inputs are only water and potential. However, oxygen evolution reaction (OER) via water splitting is a sluggish reaction. So, herein, we report the synthesis of a novel OER hybrid tetrametallic electrocatalyst (Co–Ni–Fe–Zn) that is cost affordable as compared to the traditional precious noble-metal-based catalysts. It was grown over the surface of fluorine doped tin oxide by a facile potentiodynamic method, and the surface modification was ensured from XRD, scanning electron microscopy, and energy dispersive x-ray spectroscopy analyses. The OER catalytic activity of the designed electrocatalyst was examined through electrochemical techniques. Linear scan voltammetric results revealed that the as-prepared catalyst generates a signal of OER with a current density of 10 mA/cm2 at an overpotential of just 90 mV under alkaline conditions. To the best of our knowledge, this is the first report on an OER catalyst that demands the lowest overpotential. Hence, the synthesized catalyst is a promising candidate for realizing the dream of rapidly producing sustainable and environmentally friendly fuel.

中文翻译：

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用于高效析氧反应的过渡金属基电解槽的开发

21 世纪的最大挑战是开发高效、环保和可扩展的可再生能源系统。在这种情况下，通过电解水生产氢气和氧气是一种明智的方法。它的输入只有水和潜力。然而，通过水分解的析氧反应 (OER) 是一个缓慢的反应。因此，在本文中，我们报告了一种新型 OER 混合四金属电催化剂（Co-Ni-Fe-Zn）的合成，与传统的贵金属基催化剂相比，该催化剂成本低廉。它通过简单的动电位方法在掺氟氧化锡的表面上生长，并通过 XRD、扫描电子显微镜和能量色散 X 射线光谱分析确保了表面改性。通过电化学技术检查了设计的电催化剂的 OER 催化活性。线性扫描伏安法结果表明，所制备的催化剂在碱性条件下以仅 90 mV 的过电位产生电流密度为 10 mA/cm2 的 OER 信号。据我们所知，这是关于要求最低过电位的 OER 催化剂的第一份报告。因此，合成的催化剂是实现快速生产可持续和环保燃料的梦想的有希望的候选者。这是关于需要最低过电位的 OER 催化剂的第一份报告。因此，合成的催化剂是实现快速生产可持续和环保燃料的梦想的有希望的候选者。这是关于需要最低过电位的 OER 催化剂的第一份报告。因此，合成的催化剂是实现快速生产可持续和环保燃料的梦想的有希望的候选者。