Gopiraman Mayakrishnan, Ramkumar Vanaraj, Bharathi Arumugam, Cadiam Mohan Babu, Madhappan Santhamoorthy, Azeem Ullah, Ji Ha Lee, Seong Cheol Kim, Ick Soo Kim
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In environmental catalysis, the material enabled complete 4-nitrophenol reduction in 3 min with a pseudo-first-order rate constant (89.72 × 10<sup>−2</sup> s<sup>−1</sup>). It also achieved 98.7% HMF conversion and 68.6% FDCA yield using 70% t-BuOOH as an oxidant. As a bifunctional electrocatalyst, CuCo-oxide/N-GCNT delivered overpotentials of 258 mV (OER) and 185 mV (HER) at 100 mA/cm<sup>2</sup>, with Tafel slopes of 56.5 mV/dec (OER) and 84.0 mV/dec (HER). The enhanced performance is attributed to synergistic bimetallic interactions, high porosity, and uniform active site dispersion. This study establishes CuCo-oxide/N-GCNT as a sustainable, high-performance alternative to noble-metal catalysts for next-generation energy and environmental applications.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 5","pages":""},"PeriodicalIF":21.8000,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01374-2.pdf","citationCount":"0","resultStr":"{\"title\":\"Hierarchical CuCo-Oxide/N-Doped Graphene-CNTs 3D Composite Material for High-performance Energy Storage and Environmental Sustainability\",\"authors\":\"Gopiraman Mayakrishnan, Ramkumar Vanaraj, Bharathi Arumugam, Cadiam Mohan Babu, Madhappan Santhamoorthy, Azeem Ullah, Ji Ha Lee, Seong Cheol Kim, Ick Soo Kim\",\"doi\":\"10.1007/s42114-025-01374-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Developing cost-effective, high-performance materials for energy storage, environmental remediation, and electrocatalysis is crucial for sustainable technologies. 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Hierarchical CuCo-Oxide/N-Doped Graphene-CNTs 3D Composite Material for High-performance Energy Storage and Environmental Sustainability
Developing cost-effective, high-performance materials for energy storage, environmental remediation, and electrocatalysis is crucial for sustainable technologies. Here, we report a novel CuCo-oxide/N-GCNT composite, synthesized via a scalable, solvent-free method, and evaluated for supercapacitors, catalytic reduction of 4-nitrophenol, HMF oxidation, and water splitting. The composite exhibited a high specific capacitance of 162.63 F/g at 1 A/g, an energy density of 22.5 Wh/kg, and a power density of 1267.3 kW/kg, with 88.08% retention after 10,000 cycles, demonstrating excellent supercapacitor stability. In environmental catalysis, the material enabled complete 4-nitrophenol reduction in 3 min with a pseudo-first-order rate constant (89.72 × 10−2 s−1). It also achieved 98.7% HMF conversion and 68.6% FDCA yield using 70% t-BuOOH as an oxidant. As a bifunctional electrocatalyst, CuCo-oxide/N-GCNT delivered overpotentials of 258 mV (OER) and 185 mV (HER) at 100 mA/cm2, with Tafel slopes of 56.5 mV/dec (OER) and 84.0 mV/dec (HER). The enhanced performance is attributed to synergistic bimetallic interactions, high porosity, and uniform active site dispersion. This study establishes CuCo-oxide/N-GCNT as a sustainable, high-performance alternative to noble-metal catalysts for next-generation energy and environmental applications.
期刊介绍：
Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field.
The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest.
Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials.
Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.
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