Characterization of Nanomaterials for Electrocatalytic Production of Hydrogen

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: 20 July 2024 | Viewed by 1134

Special Issue Editor


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Guest Editor
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
Interests: hydrogen production

Special Issue Information

Dear Colleagues,

Hydrogen is not only an important feedstock in the chemical industry but also plays an important role in future clean and renewable energy. However, most hydrogen is currently produced from fossil fuels, resulting in the emission of significant amounts of greenhouse gases. Electrolysis of water is considered a clean method for large-scale hydrogen production. However, the process requires very efficient electrocatalysts to be economically viable. Nanomaterials possess unique properties such as a large surface area, tunable electronic properties, and high reactivity that make them the ideal catalysts for the electrocatalytic production of hydrogen. The characterization of these materials is of utmost importance in comprehending their electrocatalytic mechanism, and in turn, guiding advanced electrocatalyst design with tailored functionality and superior performance.

The current Special Issue on Nanomaterials aims to present state-of-the-art characterization techniques for investigating the atomic and electronic structure of nanomaterials, as well as in situ/operando characterization techniques for tracking the structural evolution processes of the materials under operating conditions. The techniques include but are not limited to, transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman spectroscopy, infrared (IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), X-ray absorption spectroscopy (XAS), scanning probe microscopy (SPM), wide-angle X-ray diffraction (WAXRD), etc. We welcome original research and review articles that highlight the latest advancements in this field.

Dr. Hao Tan
Guest Editor

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Keywords

  • hydrogen evolution reaction
  • electrocatalysis characterization
  • techniques for nanomaterials
  • atomic and electronic
  • structure in situ/operando characterizations
  • structure–activity relationship
  • reaction mechanism

Published Papers (1 paper)

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Research

14 pages, 7849 KiB  
Article
Immersion-Driven Structural Evolution of NiFeS Nanosheets for Efficient Water Splitting
by Jianfeng Wang, Bingbing Zhao, Xiao Chen, Haixia Liu and Jie Zhang
Nanomaterials 2024, 14(1), 23; https://doi.org/10.3390/nano14010023 - 20 Dec 2023
Viewed by 806
Abstract
The development of low-cost, highly active, and stable electrocatalytic water-splitting catalysts is crucial to solving the current energy crisis and environmental pollution. Herein, a simple two-step conversion strategy is proposed to successfully prepare NiFeS nanosheet structure catalyst through the “immersion-sulfurization” strategy. The self-supported [...] Read more.
The development of low-cost, highly active, and stable electrocatalytic water-splitting catalysts is crucial to solving the current energy crisis and environmental pollution. Herein, a simple two-step conversion strategy is proposed to successfully prepare NiFeS nanosheet structure catalyst through the “immersion-sulfurization” strategy. The self-supported electrode can be prepared in large quantities due to its simple preparation process. As an active substance, NiFeS can grow directly on the NiFe foam substrate, avoiding the use of adhesives or conductive agents, and directly used as electrodes. The as-obtained NiFeS/NFF-300 displays efficient catalytic activity in electrocatalytic water splitting. The overpotential required for OER of the NiFeS/NFF-300 electrode at a current density of 10 mA cm−2 is 230 mV. The electrode underwent a stability test at 10 mA cm−2 for 24 h, and the overpotential remained essentially unchanged, demonstrating excellent stability. Moreover, NiFeS/NFF-300 exhibits considerable HER performances compared with NiFeC2O4/NFF and NiFe foam. The unique nanosheet structure and the presence of Niδ+ and Ni2+ formed by NiFe foam substrate on the NiFeS surface are responsible for its excellent electrocatalytic activity. Full article
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