Interface Engineering of RuO₂/Ni-Co₃O₄ Heterostructures for enhanced acidic oxygen evolution reaction.

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science Pub Date : 2025-03-15 Epub Date: 2024-12-01 DOI:10.1016/j.jcis.2024.11.246

Bilal Zaman, Dongxu Jiao, Jinchang Fan, Dewen Wang, Huafeng Fan, Ming Gong, Shan Xu, Yanhua Liu, Muhammad Faizan, Xiaoqiang Cui

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Abstract

RuO₂ has been recognized as a standard electrocatalyst for acidic oxygen evolution reaction (OER). Nonetheless, its high cost and limited durability are still ongoing challenges. Herein, a RuO₂/Ni-Co₃O₄ heterostructure confining a heterointerface (between RuO₂ and Ni-doped Co₃O₄) is constructed to realize enhanced OER performance. Specifically, RuO₂/Ni-Co₃O₄ containing a low Ru content (2.7 ± 0.3 wt%) achieves an overpotential of 186 mV at a current density of 10 mA cm^-2 with a long-run stability (≥1300 h). Also, it exhibits a mass activity of 1202.29 mA mg_Ru^-1 at an overpotential of 250 mV, exceeding commercial RuO₂. The results disclose an optimum electron transfer at the heterointerface, wherein Ni doping improves the adsorption energy of oxygen-containing intermediates, thereby facilitating OER. This study presents an effective approach for designing highly active and stable OER electrocatalysts.

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强化酸性析氧反应的RuO2/Ni-Co3O4异质结构界面工程

RuO2已被公认为酸性析氧反应（OER）的标准电催化剂。然而，它的高成本和有限的耐用性仍然是持续的挑战。本文构建了RuO2/Ni-Co3O4异质结构，约束了异质界面（RuO2与ni掺杂的Co3O4之间），以实现增强的OER性能。具体而言，含有低Ru含量（2.7±0.3 wt%）的RuO2/Ni-Co3O4在电流密度为10 mA cm-2时可获得186 mV的过电位，并具有长期稳定性（≥1300 h），在过电位为250 mV时，其质量活性为1202.29 mA mgr -1，超过商用RuO2。结果表明，在异质界面处存在最佳的电子转移，其中Ni掺杂提高了含氧中间体的吸附能，从而促进了OER。本研究为设计高效稳定的OER电催化剂提供了有效途径。

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

Journal of Colloid and Interface Science 化学-物理化学

CiteScore

16.10

自引率

7.10%

发文量

2568

审稿时长

2 months

期刊介绍： The Journal of Colloid and Interface Science publishes original research findings on the fundamental principles of colloid and interface science, as well as innovative applications in various fields. The criteria for publication include impact, quality, novelty, and originality. Emphasis: The journal emphasizes fundamental scientific innovation within the following categories: A.Colloidal Materials and Nanomaterials B.Soft Colloidal and Self-Assembly Systems C.Adsorption, Catalysis, and Electrochemistry D.Interfacial Processes, Capillarity, and Wetting E.Biomaterials and Nanomedicine F.Energy Conversion and Storage, and Environmental Technologies