Integrating rGO nanosheets into CuCrO2 nanoparticles for improved water splitting efficiency

IF 2.4 3区化学 Q4 CHEMISTRY, PHYSICAL

Chemical Physics Pub Date : 2025-09-29 DOI:10.1016/j.chemphys.2025.112956

Sadia Aziz , Nahid A. Osman , Hala M. Abo-Dief , Hidayath Mirza , Abhinav Kumar

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Abstract

The world energy demand and its consumption are growing day by day. The main energy sources (fossil fuels) are causing environmental pollution that is challenging for the world. Thus, it is critical to find renewable energy sources to reduce fossil fuel consumption. Electrochemical water splitting is recognized method of generating renewable energy. However, improving water splitting requires the development of electrode materials of extraordinary efficacy. This study describes the hydrothermal method used to prepare hybrid CuCrO₂/rGO. The CuCrO₂/rGO nanocomposite was characterized using a variety of physical methods. In contrast to pure CuCrO₂ (58 ± 0.037 mV dec⁻¹), electrochemical testing of CuCrO₂/rGO nanocomposite in an alkaline solution (1 M KOH) demonstrates remarkable catalytic properties such as a minimal overpotential (η) of 245 ± 0.023 mV at 10 mA cm⁻² and Tafel slope of (37 ± 0.005) mV dec⁻¹. CuCrO₂/rGO demonstrated outstanding stability (30h) and an electrochemical active surface area (ECSA) of 788.75 cm². The large surface area and better structural features can be attributed to increased efficiency. This study also highlights the nanocomposite shows substantial potential for OER and various electrochemical processes due to fast electron transport, remarkable durability, and excellent electrical conductivity.

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将氧化石墨烯纳米片整合到CuCrO2纳米颗粒中以提高水分解效率

世界能源需求和消费日益增长。主要能源（化石燃料）正在造成环境污染，这对世界来说是一个挑战。因此，寻找可再生能源来减少化石燃料的消耗是至关重要的。电化学水分解是公认的可再生能源发电方法。然而，改善水的分解需要开发具有非凡功效的电极材料。本研究描述了水热法制备CuCrO2/rGO杂化物的方法。采用多种物理方法对CuCrO2/rGO纳米复合材料进行了表征。与纯CuCrO2（58±0.037 mV dec−1）相比，CuCrO2/rGO纳米复合材料在碱性溶液（1 M KOH）中的电化学测试显示出显著的催化性能，如在10 mA cm−2下的最小过电位（η）为245±0.023 mV， Tafel斜率为（37±0.005）mV dec−1。CuCrO2/rGO表现出优异的稳定性（30h）和电化学活性表面积（ECSA）为788.75 cm2。更大的表面积和更好的结构特征可归因于效率的提高。该研究还强调，由于快速的电子传递、卓越的耐久性和优异的导电性，纳米复合材料在OER和各种电化学过程中显示出巨大的潜力。

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

Chemical Physics 化学-物理：原子、分子和化学物理

CiteScore

4.60

自引率

4.30%

发文量

278

审稿时长

39 days

期刊介绍： Chemical Physics publishes experimental and theoretical papers on all aspects of chemical physics. In this journal, experiments are related to theory, and in turn theoretical papers are related to present or future experiments. Subjects covered include: spectroscopy and molecular structure, interacting systems, relaxation phenomena, biological systems, materials, fundamental problems in molecular reactivity, molecular quantum theory and statistical mechanics. Computational chemistry studies of routine character are not appropriate for this journal.