Application of ZrO2 and Ni modified carbon nanotube composites as bifunctional water electrolysis catalysts

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2024-10-31 DOI:10.1016/j.diamond.2024.111731

Siyue Zhang , Lin Zhu , Zheng Ai , Baoli Wang , Ahmad Mansoor , Yan Zhang , Wei Sun

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引用次数: 0

Abstract

By using carbon nanotube (CNT) as the carrier, Ni as the active center and ZrO₂ as the modifier, an efficient electrocatalytic material (ZrO₂-Ni/CNT) is designed and synthesized in this paper. The structure and properties of the catalyst are characterized by various instrumental analysis methods such as SEM, TEM, XRD and XPS. The electrochemical test results show that the addition of ZrO₂ can significantly improve the catalytic performance of this catalyst in the electrochemical water splitting. In an alkaline solution, ZrO₂-Ni/CNT catalyst displays an exceedingly low overpotential of 169 mV and 249 mV at the current density of 10 mA cm⁻² towards hydrogen evolution reaction and oxygen evolution reaction, respectively. This work shows that the modification of ZrO₂ can improve the electrocatalytic activity of Ni-based materials, and the modification strategy can be applied to improve the electrocatalytic activity of commercial Ni-based electrode materials.

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氧化锆和镍修饰碳纳米管复合材料作为双功能水电解催化剂的应用

本文以碳纳米管（CNT）为载体，以 Ni 为活性中心，以 ZrO2 为改性剂，设计并合成了一种高效的电催化材料（ZrO2-Ni/CNT）。本文采用 SEM、TEM、XRD 和 XPS 等多种仪器分析方法对催化剂的结构和性质进行了表征。电化学测试结果表明，添加 ZrO2 可以显著提高该催化剂在电化学水分离中的催化性能。在碱性溶液中，当电流密度为 10 mA cm-2 时，ZrO2-Ni/CNT 催化剂对氢进化反应和氧进化反应的过电位分别为 169 mV 和 249 mV。这项工作表明，对 ZrO2 进行改性可提高镍基材料的电催化活性，该改性策略可用于提高商用镍基电极材料的电催化活性。

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

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.