Bhosale Mrunal, Morankar Pritam J, Amate Rutuja U, Jeon Chan-Wook
School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 712-749, Republic of Korea.
Polymers (Basel). 2025 May 7;17(9):1281. doi: 10.3390/polym17091281.
The electrochemical water splitting method is widely regarded as an efficient and sustainable approach for producing high-purity hydrogen in an environmentally friendly manner. Cost-effective and efficient electrocatalysts are essential for augmenting the electrocatalytic water oxidation reaction. Herein, the PEG-WO-NiO electrocatalyst is acknowledged for attaining efficient oxygen evolution reaction (OER) performances in alkaline conditions. The NiO nanoparticles anchored themselves to the PEG-WO's surface and produced an effective interfacial contact between the electrocatalyst materials. Among various compositions, the optimized ratio of the PEG-WO-NiO electrocatalyst exhibits a low overpotential of 349.7 mV at a current density of 10 mA cm and a Tafel slope of 71.22 mV dec for the OER in 1 M KOH. Additionally, the electrocatalyst demonstrates excellent stability, maintaining its performance even after 5000 cyclic voltammetry (CV) cycles and chronopotentiometry analysis. Given its durability and high electrochemically active surface area, the PEG-WO-NiO electrocatalyst contributes to the advancement of cost-effective and scalable solutions for water oxidation applications.
电化学水分解法被广泛认为是一种高效且可持续的方法，能够以环境友好的方式生产高纯度氢气。具有成本效益且高效的电催化剂对于增强电催化水氧化反应至关重要。在此，PEG-WO-NiO电催化剂因在碱性条件下实现高效析氧反应（OER）性能而受到认可。NiO纳米颗粒附着在PEG-WO的表面，并在电催化剂材料之间产生了有效的界面接触。在各种组成中，PEG-WO-NiO电催化剂的优化比例在1 M KOH中，对于OER在电流密度为10 mA cm时表现出349.7 mV的低过电位以及71.22 mV dec的塔菲尔斜率。此外，该电催化剂表现出优异的稳定性，即使经过5000次循环伏安法（CV）循环和计时电位分析后仍能保持其性能。鉴于其耐久性和高电化学活性表面积，PEG-WO-NiO电催化剂有助于推进用于水氧化应用的具有成本效益且可扩展的解决方案。
