Hydrogen evolution reaction activity of 3D-printed TiB2 and MgB2 matrix reinforced with graphene and carbon nanofiber in alkaline media

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

Diamond and Related Materials Pub Date : 2024-11-20 DOI:10.1016/j.diamond.2024.111784

Sevgi Ateş , Evrim Baran Aydın

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引用次数: 0

Abstract

In the present study, the TiB_2, MgB₂/ Graphene (GRP)/PLA and TiB₂, MgB₂/Carbon Nanofiber (CNF)/PLA 3D-printed electrodes were fabricated via the Fused Deposition Modeling (FDM) technique. The hydrogen Evolution Reaction (HER) performance of 3D electrodes was studied using electrochemical impedance spectroscopy (EIS) and cathodic polarization analysis methods in 1 M KOH media. The EIS measurement results showed that the total resistance values were significantly reduced due to the addition of GRP and CNF to TiB₂/PLA and MgB₂/PLA 3D electrodes. In addition, the increase in current density with the addition of GRP and CNF to the 3D electrodes from the cathodic polarization curves supported the EIS measurement results. Moreover, a new activation method without using solvent was applied as different from the literature, to enhance the conductivity of 3D electrodes. The activation process was performed by implementing 50 cycles in 1 M KOH solution with the cyclic voltammetry method. As a result, with this study, both the synergistic effect of multiple composites and the application of the activation method have increased the HER efficiency of the 3D electrocatalyst. Thus, 3D electrocatalysts have been introduced to the energy application field.

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石墨烯和碳纳米纤维增强的 3D 打印 TiB2 和 MgB2 基体在碱性介质中的氢进化反应活性

本研究通过熔融沉积建模（FDM）技术制造了 TiB2、MgB2/石墨烯（GRP）/PLA 和 TiB2、MgB2/碳纳米纤维（CNF）/PLA 三维打印电极。在 1 M KOH 介质中，使用电化学阻抗谱（EIS）和阴极极化分析方法研究了三维电极的氢进化反应（HER）性能。EIS 测量结果表明，在 TiB2/PLA 和 MgB2/PLA 三维电极中添加 GRP 和 CNF 后，总电阻值显著降低。此外，从阴极极化曲线来看，在三维电极中添加 GRP 和 CNF 后，电流密度增加，这也支持了 EIS 测量结果。此外，为了提高三维电极的导电性，还采用了一种与文献不同的不使用溶剂的新活化方法。活化过程是在 1 M KOH 溶液中用循环伏安法进行 50 个循环。因此，通过这项研究，多种复合材料的协同效应和活化方法的应用都提高了三维电催化剂的 HER 效率。因此，三维电催化剂已被引入能源应用领域。

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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.