Water splitting is a helpful way of converting renewable electricity into fuel. The oxygen evolution reaction (OER) is a slow reaction that provides low-cost electrons for water reduction reactions. Thus, finding an efficient, low-cost, stable, and environmentally friendly OER catalyst is critical for water splitting. Here, sodium cobalticarborane (1) is introduced as a promising precatalyst for forming an OER cobalt-based catalyst. The cobalt-based catalyst was characterized by several methods and is suggested to be Co(III) (hydr)oxide. Using fluorine-doped tin oxide, glassy carbon, platinum, and gold electrodes, the OER activity of the cobalt-based precatalyst was investigated. The overpotential for the onset of OER in the presence of 1 is 315 mV using fluorine-doped tin oxide electrodes. The onsets of OERs in the presence of 1 using gold, platinum, and glassy carbon electrodes in KOH solutions (1.0 M) turned out to be 275, 284, and 330 mV, respectively. The nanoparticles on the gold electrodes exhibit significant OER activity with a Tafel slope of 63.8 mV/decade and an overpotential at 541 mV for 50 mA/cm². In the case of the glassy carbon electrodes, a Tafel slope of 109.9 mV/decade and an overpotential of 548 mV for 10 mA/cm² is recorded for the catalyst. This paper outlines an interesting approach to synthesize cobalt oxide for OER through a slow decomposition of a precatalyst.

中文翻译：

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钴碳硼烷钠：一种有前途的析氧反应预催化剂

水分解是将可再生电力转化为燃料的有用方法。析氧反应 (OER) 是一种缓慢的反应，可为水的还原反应提供低成本的电子。因此，寻找一种高效、低成本、稳定且环保的 OER 催化剂对于水分解至关重要。在此，我们引入了碳硼烷钠 ( 1 ) 作为用于形成 OER 钴基催化剂的有前景的预催化剂。钴基催化剂通过多种方法表征，建议为钴（III）（氢）氧化物。使用掺氟氧化锡、玻碳、铂和金电极，研究了钴基预催化剂的 OER 活性。存在1 时OER 发生的过电位使用氟掺杂氧化锡电极时为 315 mV。在 KOH 溶液 (1.0 M) 中使用金、铂和玻碳电极在存在1的情况下，OER 的起始值分别为 275、284和 330 mV。金电极上的纳米颗粒表现出显着的 OER 活性，Tafel 斜率为 63.8 mV/decade，50 mA/cm ^{2 的}过电位为 541 mV 。在玻璃碳电极的情况下，记录了催化剂的 109.9 mV/decade 的 Tafel 斜率和 10 mA/cm ²的 548 mV 的过电势。本文概述了一种通过预催化剂的缓慢分解来合成用于 OER 的氧化钴的有趣方法。