Investigation of electrochemical property by neodymium-doped nickel vanadium oxide

IF 3.2 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Sol-Gel Science and Technology Pub Date : 2025-06-27 DOI:10.1007/s10971-025-06811-8

Arooj Fatima, Soumaya Gouadria, Arvind Yadav, Jayanti Makasana, Suhas Ballal, Sachin Jaidka, Piyus Kumar Pathak, Rahul Raj Chaudhary, Vijaya L. Mishra, Abhinav Kumar

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Abstract

The development of an efficient electrocatalyst is significant to enhance the slow oxygen evolution reaction (OER) and stock electrical energy as H₂ fuel. Hence, the formation of a cost-effective process for an efficient OER electrocatalyst, distinguished by several active regions, large surface area (SA) and outstanding stability is crucial for improving hydrogen generation and its availability. This work displays the fabrication of neodymium-doped nickel vanadium oxide (Nd-Ni₂V₂O₇) via a hydrothermal route. X-ray diffraction (XRD) study and Scanning electron microscopy (SEM) were employed to confirm the structural characteristics and morphological properties of fabricated materials. The Brunauer–Emmett–Teller (BET) results displayed that Nd-Ni₂V₂O₇ had specific surface area (SSA). The Nd-Ni₂V₂O₇ showed Tafel plot (39 mV/dec) with lower overpotential (η) of 211 mV at standard current density (C_d) (10 mA/cm²). The Nd-Ni₂V₂O₇ displayed remarkable stability after the 3,000^th cycle and reduced impedance characteristics (i.e.solution resistance (R_s) of 0.32 Ω). The attained results displayed that addition of Nd dopant to Ni₂V₂O₇ enhanced the OER performance of the prepared pyrochlore. This research provides improved OER electrocatalysts and a wider understanding of relationship between pyrochlore’s structure and performance for more practical energy-generating devices.

Graphical Abstract

Abstract Image

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掺钕氧化镍钒的电化学性能研究

高效电催化剂的开发对提高慢析氧反应（OER）和储存电能作为氢气燃料具有重要意义。因此，形成一种具有成本效益的高效OER电催化剂工艺，以几个活性区域，大表面积（SA）和出色的稳定性为特征，对于提高氢的生成及其可用性至关重要。研究了水热法制备掺钕氧化镍钒（Nd-Ni2V2O7）。利用x射线衍射（XRD）和扫描电子显微镜（SEM）研究了制备材料的结构特征和形态性能。brunauer - emmet - teller （BET）结果表明Nd-Ni2V2O7具有比表面积。在标准电流密度（Cd）（10 mA/cm2）下，Nd-Ni2V2O7呈现Tafel图（39 mV/dec），过电位（η）较低，为211 mV。Nd-Ni2V2O7在3000次循环后表现出显著的稳定性，阻抗特性降低（即溶液电阻（Rs）为0.32 Ω）。结果表明，在Ni2V2O7中加入Nd掺杂剂可以提高所制焦绿盐的OER性能。该研究为改进OER电催化剂和更广泛地了解焦绿石的结构与性能之间的关系提供了更实用的能量产生装置。图形抽象

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.