Fabrication of XCoFe2O4 (X=Pr, Nd)/GO Nanocomposites for Hydrogen Evolution Reaction and Supercapacitor Application

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2025-01-25 DOI:10.1007/s12678-025-00930-0

Sidra Aslam, Arshia Iqbal, Muhammad Naveed, Misbah Mirza, Waseem Abbas, Muhammad Safdar

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引用次数: 0

Abstract

The development of active bifunctional electrocatalysts is crucial in reducing dependence on precious-metal-based materials for energy production and storage. In this work, we present the synthesis of novel nanocomposites of XCoFe₂O₄ (where X represents Pr or Nd) integrated with graphene oxide (GO) using a hydrothermal method for light-induced hydrogen evolution reaction (HER) and supercapacitor functions. Among the synthesized electrocatalysts, NdPr-CoFe₂O₄/GO exhibits superior HER performance, characterized by a minimal overpotential at photocurrent density of 10 mA cm⁻² in 1 M KOH solution. Additionally, the composite shows a high specific capacitance of 1590.5 F/g at 3 A/g, maintaining approximately 97.6% of its capacitance after 1000 cycles. The enhanced performance is attributed to the synergistic effects of optimal bimetallic substitution, maximized electrochemical surface area, reduced particle size, and minimized charge transfer resistance. This study opens new pathways for the design of spinel ferrite-GO composites for efficient energy conversion and storage applications.

Graphical Abstract

Graphical abstract presenting applications of synthesized catalysts.

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XCoFe2O4 (X=Pr, Nd)/GO纳米复合材料的制备及其在超级电容器中的应用

开发活性双功能电催化剂对于减少能源生产和储存对贵金属基材料的依赖至关重要。在这项工作中，我们提出了一种新型的纳米复合材料XCoFe2O4（其中X代表Pr或Nd）与氧化石墨烯（GO）集成使用水热法光诱导析氢反应（HER）和超级电容器功能。在所合成的电催化剂中，npr - cofe2o4 /GO表现出优异的HER性能，在1 M KOH溶液中光电流密度为10 mA cm−2时过电位最小。此外，该复合材料在3a /g时具有1590.5 F/g的高比电容，在1000次循环后保持约97.6%的电容。优化的双金属取代、最大化的电化学表面积、减小的颗粒尺寸和最小化的电荷转移电阻的协同效应是性能增强的原因。该研究为尖晶石铁素体-氧化石墨烯复合材料的高效能量转换和存储应用开辟了新的途径。图解摘要合成催化剂应用的图解摘要。

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来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

期刊介绍： Electrocatalysis is cross-disciplinary in nature, and attracts the interest of chemists, physicists, biochemists, surface and materials scientists, and engineers. Electrocatalysis provides the unique international forum solely dedicated to the exchange of novel ideas in electrocatalysis for academic, government, and industrial researchers. Quick publication of new results, concepts, and inventions made involving Electrocatalysis stimulates scientific discoveries and breakthroughs, promotes the scientific and engineering concepts that are critical to the development of novel electrochemical technologies. Electrocatalysis publishes original submissions in the form of letters, research papers, review articles, book reviews, and educational papers. Letters are preliminary reports that communicate new and important findings. Regular research papers are complete reports of new results, and their analysis and discussion. Review articles critically and constructively examine development in areas of electrocatalysis that are of broad interest and importance. Educational papers discuss important concepts whose understanding is vital to advances in theoretical and experimental aspects of electrochemical reactions.