An investigation on chlorine evolution reaction behavior of graphene containing RuO2-TiO2 coating using advanced dynamic impedance method

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Diamond and Related Materials Pub Date : 2025-02-18 DOI:10.1016/j.diamond.2025.112125

K. Jafarzadeh, S. Taei, S.M. Mirali, Y. Mosaei Oskoei

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Abstract

Graphene was added to a standard RuO₂-TiO₂ coating to increase the electrocatalytic capacity and facilitate the easier evolution of chlorine gas. The efficiency of chlorine gas evolution from these anodes was studied and their electrochemical behavior was analyzed using various methods including electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and dynamic electrochemical impedance spectroscopy (DEIS). The surface morphology of the samples was observed using scanning electron microscopy (SEM). The results showed that adding up to 1 g/L of graphene reduced charge transfer resistance and increased chlorine gas evolution. It was found that wetting of the anode surface played a role in the evolution of chlorine gas. Despite the improved electrocatalytic activity, the hydrophobic nature of graphene made it difficult for bubbles to form on the surface of the anode, resulting in larger bubbles that caused damage to the surface.

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采用先进动态阻抗法研究含RuO2-TiO2石墨烯涂层的析氯反应行为

将石墨烯添加到标准的RuO2-TiO2涂层中，以增加电催化能力并促进氯气的更容易析出。利用电化学阻抗谱（EIS）、循环伏安法（CV）和动态电化学阻抗谱（DEIS）等方法研究了这些阳极的氯气析出效率，并对其电化学行为进行了分析。用扫描电子显微镜（SEM）观察了样品的表面形貌。结果表明，添加1 g/L的石墨烯降低了电荷转移电阻，增加了氯气的析出。结果表明，阳极表面的润湿对氯气的演化有一定的影响。尽管电催化活性有所提高，但石墨烯的疏水性使其难以在阳极表面形成气泡，从而导致更大的气泡对表面造成损害。

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.