Hierarchical CuCo-Oxide/N-Doped Graphene-CNTs 3D Composite Material for High-performance Energy Storage and Environmental Sustainability

IF 21.8 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2025-09-16 DOI:10.1007/s42114-025-01374-2

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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Abstract

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.

Graphical Abstract

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分层cuco -氧化物/ n掺杂石墨烯- cnts三维复合材料的高性能储能和环境可持续性

为能源储存、环境修复和电催化开发具有成本效益的高性能材料对于可持续技术至关重要。在这里，我们报告了一种新的CuCo-oxide/N-GCNT复合材料，通过一种可扩展的，无溶剂的方法合成，并评估了超级电容器，催化还原4-硝基苯酚，HMF氧化和水分解。该复合材料在1 a /g时比电容高达162.63 F/g，能量密度为22.5 Wh/kg，功率密度为1267.3 kW/kg，循环10000次后保持率为88.08%，表现出优异的超级电容器稳定性。在环境催化中，该材料能够在3分钟内以准一级速率常数（89.72 × 10−2 s−1）完全还原4-硝基苯酚。以70%的t-BuOOH为氧化剂，HMF转化率为98.7%，FDCA收率为68.6%。作为双功能电催化剂，CuCo-oxide/N-GCNT在100 mA/cm2下的过电位为258 mV （OER）和185 mV (HER)， Tafel斜率为56.5 mV/dec （OER）和84.0 mV/dec （HER）。增强的性能归因于协同双金属相互作用、高孔隙率和均匀的活性位点分散。本研究确立了CuCo-oxide/N-GCNT作为下一代能源和环境应用中贵金属催化剂的可持续、高性能替代品的地位。图形抽象

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

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.