Nanocube-structured ZnSn(OH)₆ for enhanced bifunctional electrocatalysis in oxygen evolution and urea oxidation reactions

IF 3.3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics Pub Date : 2025-05-28 DOI:10.1016/j.ssi.2025.116915

Yu Zhao , Santhosh Kumar Thatikonda , Mohamed A. Ghanem , Gutturu Rajasekhara Reddy , Sang Woo Joo

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Abstract

This research investigates the development of bifunctional electrocatalysts for renewable energy applications, specifically water splitting and urea oxidation. Nanostructured zinc hydroxystannate (ZnSn(OH)₆; ZHS) was synthesized and characterized as a potential catalyst for these reactions. Electrochemical measurements demonstrated that ZHS exhibits promising catalytic activity for both oxygen evolution and urea oxidation. A current density of 10 mA cm⁻² was achieved by the active material at an overpotential of 216 mV for urea oxidation, and 392 mV for oxygen evolution with corresponding Tafel slopes of 110.8 and 37.2 mV dec⁻¹, respectively. These results suggest that ZHS could be a promising candidate for future energy storage and conversion technologies. The electrocatalysts highly crystalline structure and extensive electrochemical active surface area enhance charge transfer kinetics and accelerate reaction rates, underscoring its exceptional electrocatalytic performance. This study presents a straightforward approach to developing bifunctional electrocatalysts with enhanced OER and UOR capabilities

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纳米立方结构ZnSn（OH）₆在析氧和尿素氧化反应中增强双功能电催化作用

摘要本文研究了可再生能源双功能电催化剂的发展，特别是水裂解和尿素氧化。纳米羟基锡酸锌(ZnSn（OH）₆；合成了ZHS，并将其表征为这些反应的潜在催化剂。电化学测试表明，ZHS在析氧和尿素氧化方面都表现出良好的催化活性。活性材料在过电位216 mV和392 mV下的尿素氧化电流密度为10 mA cm−2，相应的Tafel斜率分别为110.8和37.2 mV dec−1。这些结果表明，ZHS可能是未来储能和转换技术的一个有前途的候选者。高结晶结构和广泛的电化学活性表面积增强了电荷转移动力学，加快了反应速率，突出了其优异的电催化性能。本研究提出了一种开发具有增强OER和UOR能力的双功能电催化剂的直接方法

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solid State Ionics 物理-物理：凝聚态物理

CiteScore

6.10

自引率

3.10%

发文量

152

审稿时长

58 days

期刊介绍： This interdisciplinary journal is devoted to the physics, chemistry and materials science of diffusion, mass transport, and reactivity of solids. The major part of each issue is devoted to articles on: (i) physics and chemistry of defects in solids; (ii) reactions in and on solids, e.g. intercalation, corrosion, oxidation, sintering; (iii) ion transport measurements, mechanisms and theory; (iv) solid state electrochemistry; (v) ionically-electronically mixed conducting solids. Related technological applications are also included, provided their characteristics are interpreted in terms of the basic solid state properties. Review papers and relevant symposium proceedings are welcome.