Preparation of nano-composite of CoCr2O4 with rGO by solvothermal method for water splitting

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

Diamond and Related Materials Pub Date : 2025-03-03 DOI:10.1016/j.diamond.2025.112167

Sidra Jabeen , Ashfaq Ahmad , Abhinav Kumar , Sarah A. Alsalhi , Jayanti Makasana , Suhas Ballal , R.S.K. Sharma , Piyus Kumar Pathak , Rahul Raj Chaudhary , Vijayalaxmi Mishra

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Abstract

The use of fossil fuels for energy generation is a well-known environmental issue. To overcome this problem, it is vital to discover a pollution-free energy source where hydrogen is used as a renewable energy resource. Due to its abundance on earth and zero carbon emission, it can substitute fossil fuels. Electrochemical water splitting is best method for producing molecular hydrogen as a sustainable energy source. Herein, a nanocomposite of transition metal-based spinel with rGO was synthesized by solvothermal method for OER activity. Various analytical approaches were employed to analyze the CoCr₂O₄/rGO composite that revealed its phase structure. The BET adsorption isotherm showed that its structure was mesoporous. Due to their unique mesoporous configuration, CoCr₂O₄/rGO composite shows enhanced electrical conductivity, improved thermal stability, and increased surface area. Furthermore, Electrochemical tests of composite in 1 M KOH revealed a lower overpotential 274 mV and Tafel 53 mV dec⁻¹ for OER. The exceptional findings achieved by electrochemical activity imply that nanocomposite of CoCr₂O₄/rGO acts as excellent electrocatalyst for OER applications.

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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.