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Nanomaterials
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Advanced Nanostructures for Electrochemical Energy Conversion and Storage
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Advanced Nanostructures for Electrochemical Energy Conversion and Storage

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

Deadline for manuscript submissions: closed (20 September 2024) | Viewed by 3942

Special Issue Editor

Dr. Barbara Ballarin

E-Mail Website
Guest Editor
Department of Industrial Chemistry Toso Montanari, Alma Mater Studiorum University of Bologna, IT-40126 Bologna, Italy
Interests: electyrochemistry; supercapacitors; composite materials; smart sensors; wearable sensors
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electrochemical energy conversion and storage play crucial roles in meeting the increasing demand for renewable, portable, and affordable power supplies for society. The increasing energy demand is significantly driving rapid development in technologies in this field, such as (photo-)electrochemical fuel cells, rechargeable batteries, and supercapacitors. The corresponding electrochemical process fundamentally involves a series of physical interactions and/or chemical reactions at the electrode surface and/or the electrode/electrolyte interface, and their kinetics are closely associated with the transport behaviors of electrons and ions. Therefore, common issues that must be addressed to improve electrochemical energy conversion and storage performance are how to optimize electrode materials and the mass transport of electrons and ions. Recently, advanced nanostructured materials have received tremendous interest due to their unique mechanical/electrical properties and overall behavior, contributed to by the complex synergy of bulk and interfacial properties. This Special Issue aims to attract both academic and industrial researchers to present comprehensive research outlining the progress in the application of advanced nanostructures to improve the performance of electrochemical energy conversion and storage devices. We invite authors to contribute original research articles and review articles covering the current progress on advanced nanostructures in this field.

Potential topics include, but are not limited to, the following:

  1. Well-defined nanostructures;
  2. 3D nanostructures;
  3. Solar cell and dye solar cell;
  4. Lithium-ion battery;
  5. Supercapacitors;
  6. Fuel cell;
  7. Nanostructured composites.

Dr. Barbara Ballarin
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • photovoltaics
  • nanomaterials
  • nanostructures
  • interface engineering
  • mesoporous nanomaterials
  • fuel cell
  • lithium-ion battery
  • supercapacitors
  • electrocatalysis
  • well-defined nanostructures
  • nanocomposites

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Published Papers (3 papers)

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Research

12 pages, 5214 KiB  
Article
Electrocatalytic Oxidation of Benzaldehyde on Gold Nanoparticles Supported on Titanium Dioxide
by Li Gong, Yu Jin, Shiling Zhao, Kaizhi Wang, Paulina R. Martínez-Alanis and Andreu Cabot
Nanomaterials 2024, 14(12), 1005; https://doi.org/10.3390/nano14121005 - 10 Jun 2024
Viewed by 727
Abstract
The electrooxidation of organic compounds offers a promising strategy for producing value-added chemicals through environmentally sustainable processes. A key challenge in this field is the development of electrocatalysts that are both effective and durable. In this study, we grow gold nanoparticles (Au NPs) [...] Read more.
The electrooxidation of organic compounds offers a promising strategy for producing value-added chemicals through environmentally sustainable processes. A key challenge in this field is the development of electrocatalysts that are both effective and durable. In this study, we grow gold nanoparticles (Au NPs) on the surface of various phases of titanium dioxide (TiO2) as highly effective electrooxidation catalysts. Subsequently, the samples are tested for the oxidation of benzaldehyde (BZH) to benzoic acid (BZA) coupled with a hydrogen evolution reaction (HER). We observe the support containing a combination of rutile and anatase phases to provide the highest activity. The excellent electrooxidation performance of this Au-TiO2 sample is correlated with its mixed-phase composition, large surface area, high oxygen vacancy content, and the presence of Lewis acid active sites on its surface. This catalyst demonstrates an overpotential of 0.467 V at 10 mA cm−2 in a 1 M KOH solution containing 20 mM BZH, and 0.387 V in 100 mM BZH, well below the oxygen evolution reaction (OER) overpotential. The electrooxidation of BZH not only serves as OER alternative in applications such as electrochemical hydrogen evolution, enhancing energy efficiency, but simultaneously allows for the generation of high-value byproducts such as BZA. Full article
(This article belongs to the Special Issue Advanced Nanostructures for Electrochemical Energy Conversion and Storage)
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13 pages, 2508 KiB  
Article
Direct Synthesis of MOF-74 Materials on Carbon Fiber Electrodes for Structural Supercapacitors
by David Martinez-Diaz, Pedro Leo, David Martín Crespo, María Sánchez and Alejandro Ureña
Nanomaterials 2024, 14(2), 227; https://doi.org/10.3390/nano14020227 - 20 Jan 2024
Cited by 3 | Viewed by 1354
Abstract
The use of fossil fuels has contributed significantly to environmental pollution and climate change. For this reason, the development of alternative energy storage devices is key to solving some of these problems. The development of lightweight structures can significantly reduce the devices’ weight, [...] Read more.
The use of fossil fuels has contributed significantly to environmental pollution and climate change. For this reason, the development of alternative energy storage devices is key to solving some of these problems. The development of lightweight structures can significantly reduce the devices’ weight, thereby reducing energy consumption and emissions. Combining lightweight structures with alternative energy storage technologies can further improve efficiency and performance, leading to a cleaner and more sustainable system. In this work, for the first time, MOF-74 materials with different divalent metal ions have been synthesized directly on carbon fiber, one of the most widely used materials for the preparation of electrodes for supercapacitors with structural properties. Different techniques, such as nitrogen adsorption–desorption isotherms, cyclic voltammetry or galvanostatic charge–discharge, among others, were used to evaluate the influence of the metal cation on the electrochemical capacitance behavior of the modified electrodes. The Co-MOF-74 material was selected as the best modification of the carbon fibers for their use as electrodes for the fabrication of structural supercapacitors. The good electrochemical performance shown after the incorporation of MOF materials on carbon fibers provides a viable method for the development of carbon fiber electrodes, opening a great variety of alternatives. Full article
(This article belongs to the Special Issue Advanced Nanostructures for Electrochemical Energy Conversion and Storage)
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12 pages, 5968 KiB  
Article
Exploring the Effects of Various Two-Dimensional Supporting Materials on the Water Electrolysis of Co-Mo Sulfide/Oxide Heterostructure
by Ngoc-Diem Huynh, Won Mook Choi and Seung Hyun Hur
Nanomaterials 2023, 13(17), 2463; https://doi.org/10.3390/nano13172463 - 31 Aug 2023
Cited by 3 | Viewed by 1100
Abstract
In this study, various two-dimensional (2D) materials were used as supporting materials for the bimetallic Co and Mo sulfide/oxide (CMSO) heterostructure. The water electrolysis activity of CMSO supported on reduced graphene oxide (rGO), graphite carbon nitride (gC3N4), and siloxene [...] Read more.
In this study, various two-dimensional (2D) materials were used as supporting materials for the bimetallic Co and Mo sulfide/oxide (CMSO) heterostructure. The water electrolysis activity of CMSO supported on reduced graphene oxide (rGO), graphite carbon nitride (gC3N4), and siloxene (SiSh) was better than that of pristine CMSO. In particular, rGO-supported CMSO (CMSO@rGO) exhibited a large surface area and a low interface charge-transfer resistance, leading to a low overpotential and a Tafel slope of 259 mV (10 mA/cm2) and 85 mV/dec, respectively, with excellent long-term stability over 40 h of continuous operation in the oxygen evolution reaction. Full article
(This article belongs to the Special Issue Advanced Nanostructures for Electrochemical Energy Conversion and Storage)
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