Kai Chen, Yong-Hua Cao, Gyu-Cheol Kim, Chiyeop Kim, Sunny Yadav, Vandung Dao, In-Hwan Lee
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引用次数: 0
Abstract
In the field of efficient and clean energy, significant challenges remain in constructing highly active bifunctional electrodes for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). Herein, two high-performance bifunctional electrodes with brush-like and wire-like cobalt/nickel phosphide heterostructure nanoarrays supported on nickel foam are constructed using a surface/interface reconstruction strategy, termed b-CoP/Ni2P/NF, and w-CoP/Ni2P/NF, respectively. The unique morphological configuration and rich heterostructure interface effectively accelerate the transformation of electrons and protons, exposing ultra-high active sites and carrier mobility. As a result, b-CoP/Ni2P/NF, with its stronger proton/electron removal/insertion ability and higher conductivity, demonstrates remarkable electrocatalytic activity and kinetics in OER/HER processes. Moreover, the density functional theory calculations reveal that designing the construction of high-index surface heterojunctions can significantly optimize hydrogen adsorption energy in HER and reduce the intermediate (O* → OOH*) conversion barrier in OER. In practical applications, the b-CoP/Ni2P/NF achieves a very low overpotential and excellent stability in alkaline double-electrode full-cell water-splitting systems.
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.