Synergistic integration of 3D-ZnTb₂O₄@1D-CNT@2D-rGO: A multi-dimensional hybrid electrode on carbon paper for highly-efficient energy and HER catalysis applications

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2025-08-27 DOI:10.1016/j.diamond.2025.112784

Sohail Mumtaz , Muhammad Azhar Mumtaz , Abhinav Kumar , Z. Chine , A.M. Afzal , M.A. Diab , Heba A. El-Sabban

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Abstract

The enormous demand for energy in the current era has sparked significant interest in asymmetric hybrid devices (AHDs) owing to the characteristics of the battery and supercapacitor. Here, a composite of zinc terbium oxide (ZnTb₂O₄), multi-walled carbon nanotubes (MWCNTs), and reduced graphene oxide (rGO), is synthesized utilizing a hydrothermal process. The material demonstrated its battery-grade nature and excellent performance with a specific capacity (Q_s) of 1388.6C/g. A hybrid device (ZnTb₂O₄@rGO@CNT//AC) showed a maximum Q_s of 201.7C/g because of the synergistic effect. The asymmetric hybrid energy storage device revealed a maximum power density (P_d) of 2695.7 W/kg and energy density (E_d) of 84.6 Wh/Kg with high capacity retention of 94 % after 10,000 charging and discharging cycles. The ZnTb₂O₄@rGO@CNT electrode is utilized in the hydrogen evolution reaction (HER) application. The hybrid electrode showed a better value of overpotential and Tafel slope of 49 mV and 51 mV/dec, respectively. This work introduces a new hybrid material to meet the need for more E_d and higher P_d in AHDs, and it can be used as an effective electrocatalyst.

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3D-ZnTb₂O₄@1D-CNT@2D-rGO的协同集成：用于高效能源和HER催化应用的碳纸上的多维杂化电极

由于电池和超级电容器的特性，当前时代对能源的巨大需求引发了对非对称混合器件（ahd）的极大兴趣。本文利用水热法合成了氧化铽锌（ZnTb2O4）、多壁碳纳米管（MWCNTs）和还原氧化石墨烯（rGO）的复合材料。该材料的比容量（Qs）达到1388.6C/g，具有电池级的性质和优异的性能。混合装置（ZnTb2O4@rGO@CNT//AC）由于协同效应，最大Qs为201.7C/g。该非对称混合储能装置的最大功率密度（Pd）为2695.7 W/kg，能量密度（Ed）为84.6 Wh/ kg，在10000次充放电循环后容量保持率高达94% %。ZnTb2O4@rGO@CNT电极用于析氢反应（HER）应用。杂化电极的过电位和Tafel斜率较好，分别为49 mV和51 mV/dec。本文介绍了一种新的杂化材料，可以满足AHDs对更多Ed和更高Pd的需求，它可以作为一种有效的电催化剂。

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.