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Novel Electrode for High-Performance Supercapacitors and Electrocatalysis
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Novel Electrode for High-Performance Supercapacitors and Electrocatalysis

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Energy Materials".

Deadline for manuscript submissions: 10 February 2025 | Viewed by 5974

Special Issue Editors

Dr. Abdelhakim Elmouwahidi

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Guest Editor
Department of Inorganic Chemistry, University of Granada, Granada, Spain
Interests: carbon material; energy storage; supercapacitor; electrocatalysis; fuel cell
Dr. Esther Bailón-García

E-Mail Website
Guest Editor
Department of Inorganic Chemistry, University of Granada, Granada, Spain
Interests: carbon materials; photocatalysis; energy storage; CO2 conversion; carbon composites, 3D-printing; electrocatalysis
Special Issues, Collections and Topics in MDPI journals
Dr. María Pérez-Cadenas

E-Mail Website1 Website2
Guest Editor
Department of Inorganic and Technical Chemistry, National Distance Education University (UNED), Madrid, Spain
Interests: carbon materials; carbon gels; heterogeneous catalysis; nanotechnology; xps spectroscopy; material characterization; nanomaterials; adsorption; surface characterization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Demands for clean and sustainable energy with high power and energy densities, high efficiency, and long-life expectancy have made electrochemical energy production a serious contender as an alternative energy/power source. Systems for electrochemical energy storage and conversion, including batteries and electrochemical capacitors (ECs), are the major emerging devices for power supplies. Great efforts have been made to developing new electrochemical devices. Nevertheless, challenges still exist, and more energy devices are still required for actual applications.

Advanced carbon materials, due to their textural and chemical characteristics, represent one of the most interesting classes of electro-catalysts used in different applications, such as CO2 electro reduction, fuel cells and the electro-Fenton process.

Therefore, the current Special Issue focuses on the novel developments in advanced carbon materials research, seeking to improve energy storage device performance and electro catalysis.

It is our pleasure to invite you to submit a manuscript for this Special Issue. Full papers, short communications, and reviews are welcome.

Potential topics of the issue include but are not limited to the following: 

  • The future of energy storage devices;
  • Electrochemical energy conversion and storage;
  • New electrode materials for energy storage;
  • The supercapacitor and its applications;
  • Challenge of energy storage devices;
  • Electrocatalysis;
  • Oxygen electro-reduction (OER);
  • Hydrogen evolution reaction (HER);
  • CO2 electro-reduction;
  • Electro-Fenton processes.

Dr. Abdelhakim Elmouwahidi
Dr. Esther Bailón-García
Dr. María Pérez-Cadenas
Guest Editors

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. Materials 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 2600 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

  • carbon material
  • energy storage
  • supercapacitor
  • electrocatalysis
  • fuel cell
  • CO2 electro-reduction

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Published Papers (4 papers)

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Research

12 pages, 2659 KiB  
Communication
Predicting Sodium-Ion Battery Performance through Surface Chemistry Analysis and Textural Properties of Functionalized Hard Carbons Using AI
by Walter M. Warren-Vega, Ana I. Zárate-Guzmán, Francisco Carrasco-Marín, Guadalupe Ramos-Sánchez and Luis A. Romero-Cano
Materials 2024, 17(17), 4193; https://doi.org/10.3390/ma17174193 - 24 Aug 2024
Viewed by 1351
Abstract
Traditionally, the performance of sodium-ion batteries has been predicted based on a single characteristic of the electrodes and its relationship to specific capacity increase. However, recent studies have shown that this hypothesis is incorrect because their performance depends on multiple physical and chemical [...] Read more.
Traditionally, the performance of sodium-ion batteries has been predicted based on a single characteristic of the electrodes and its relationship to specific capacity increase. However, recent studies have shown that this hypothesis is incorrect because their performance depends on multiple physical and chemical variables. Due to the above, the present communication shows machine learning as an innovative strategy to predict the performance of functionalized hard carbon anodes prepared from grapefruit peels. In this sense, a three-layer feed-forward Artificial Neural Network (ANN) was designed. The inputs used to feed the ANN were the physicochemical characteristics of the materials, which consisted of mercury intrusion porosimetry data (SHg and average pore), elemental analysis (C, H, N, S), ID/IG ratio obtained from RAMAN studies, and X-ray photoemission spectroscopy data of the C1s, N1s, and O1s regions. In addition, two more inputs were added: the cycle number and the applied C-rate. The ANN architecture consisted of a first hidden layer with a sigmoid transfer function and a second layer with a log-sigmoid transfer function. Finally, a sigmoid transfer function was used in the output layer. Each layer had 10 neurons. The training algorithm used was Bayesian regularization. The results show that the proposed ANN correctly predicts (R2 > 0.99) the performance of all materials. The proposed strategy provides critical insights into the variables that must be controlled during material synthesis to optimize the process and accelerate progress in developing tailored materials. Full article
(This article belongs to the Special Issue Novel Electrode for High-Performance Supercapacitors and Electrocatalysis)
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12 pages, 3717 KiB  
Article
Enhanced Supercapacitor and Cycle-Life Performance: Self-Supported Nanohybrid Electrodes of Hydrothermally Grown MnO2 Nanorods on Carbon Nanotubes in Neutral Electrolyte
by Soraya Bouachma, Xiaoying Zheng, Alonso Moreno Zuria, Mohamed Kechouane, Noureddine Gabouze and Mohamed Mohamedi
Materials 2024, 17(16), 4079; https://doi.org/10.3390/ma17164079 - 16 Aug 2024
Viewed by 719
Abstract
Efficient and sustainable energy storage remains a critical challenge in the advancement of energy technologies. This study presents the fabrication and electrochemical evaluation of a self-supporting electrode material composed of MnO2 nanorods grown directly on a carbon paper and carbon nanotube (CNT) [...] Read more.
Efficient and sustainable energy storage remains a critical challenge in the advancement of energy technologies. This study presents the fabrication and electrochemical evaluation of a self-supporting electrode material composed of MnO2 nanorods grown directly on a carbon paper and carbon nanotube (CNT) substrate using a hydrothermal method. The resulting CNT/MnO2 electrodes exhibit a unique structural architecture with a high surface area and a three-dimensional hierarchical arrangement, contributing to a substantial electrochemical surface area. Electrochemical testing reveals remarkable performance characteristics, including a specific capacitance of up to 316.5 F/g, which is 11 times greater than that of conventional CP/MnO2 electrodes. Moreover, the CNT/MnO2 electrodes demonstrate outstanding retention capacity, exhibiting a remarkable 165% increase over 10,000 cycles. Symmetric supercapacitor devices utilizing CNT/MnO2 electrodes maintain a large voltage window of 3 V and a specific capacitance as high as 200 F/g. These results underscore the potential of free-standing CNT/MnO2 electrodes to advance the development of high-performance supercapacitors, which can be crucial for efficient and sustainable energy storage solutions in various industrial and manufacturing applications. Full article
(This article belongs to the Special Issue Novel Electrode for High-Performance Supercapacitors and Electrocatalysis)
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19 pages, 3581 KiB  
Article
Enhancing Interaction between Lanthanum Manganese Cobalt Oxide and Carbon Black through Different Approaches for Primary Zn–Air Batteries
by Mario García-Rodríguez, Jhony X. Flores-Lasluisa, Diego Cazorla-Amorós and Emilia Morallón
Materials 2024, 17(10), 2309; https://doi.org/10.3390/ma17102309 - 13 May 2024
Viewed by 1303
Abstract
Due to the need for decarbonization in energy generation, it is necessary to develop electrocatalysts for the oxygen reduction reaction (ORR), a key process in energy generation systems such as fuel cells and metal–air batteries. Perovskite–carbon material composites have emerged as active and [...] Read more.
Due to the need for decarbonization in energy generation, it is necessary to develop electrocatalysts for the oxygen reduction reaction (ORR), a key process in energy generation systems such as fuel cells and metal–air batteries. Perovskite–carbon material composites have emerged as active and stable electrocatalysts for the ORR, and the interaction between both components is a crucial aspect for electrocatalytic activity. This work explores different mixing methods for composite preparation, including mortar mixing, ball milling, and hydrothermal and thermal treatments. Hydrothermal treatment combined with ball milling resulted in the most favorable electrocatalytic performance, promoting intimate and extensive contact between the perovskite and carbon material and improving electrocatalytic activity. Employing X-ray photoelectron spectroscopy (XPS), an increase in the number of M-O-C species was observed, indicating enhanced interaction between the perovskite and the carbon material due to the adopted mixing methods. This finding was further corroborated by temperature-programmed reduction (TPR) and temperature-programmed desorption (TPD) techniques. Interestingly, the ball milling method results in similar performance to the hydrothermal method in the zinc–air battery and, thus, is preferable because of the ease and straightforward scalability of the preparation process. Full article
(This article belongs to the Special Issue Novel Electrode for High-Performance Supercapacitors and Electrocatalysis)
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12 pages, 3079 KiB  
Article
Solution-Plasma Synthesis and Characterization of Transition Metals and N-Containing Carbon–Carbon Nanotube Composites
by Kodai Sasaki, Kaiki Yamamoto, Masaki Narahara, Yushi Takabe, Sangwoo Chae, Gasidit Panomsuwan and Takahiro Ishizaki
Materials 2024, 17(2), 320; https://doi.org/10.3390/ma17020320 - 8 Jan 2024
Cited by 2 | Viewed by 1698
Abstract
Lithium–air batteries (LABs) have a theoretically high energy density. However, LABs have some issues, such as low energy efficiency, short life cycle, and high overpotential in charge–discharge cycles. To solve these issues electrocatalytic materials were developed for oxygen reduction reaction (ORR) and oxygen [...] Read more.
Lithium–air batteries (LABs) have a theoretically high energy density. However, LABs have some issues, such as low energy efficiency, short life cycle, and high overpotential in charge–discharge cycles. To solve these issues electrocatalytic materials were developed for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), which significantly affect battery performance. In this study, we aimed to synthesize electrocatalytic N-doped carbon-based composite materials with solution plasma (SP) using Co or Ni as electrodes from organic solvents containing cup-stacked carbon nanotubes (CSCNTs), iron (II) phthalocyanine (FePc), and N-nethyl-2-pyrrolidinone (NMP). The synthesized N-doped carbon-based composite materials were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). TEM observation and XPS measurements revealed that the synthesized carbon materials contained elemental N, Fe, and electrode-derived Co or Ni, leading to the successful synthesis of N-doped carbon-based composite materials. The electrocatalytic activity for ORR of the synthesized carbon-based composite materials was also evaluated using electrochemical measurements. The electrochemical measurements demonstrated that the electrocatalytic performance for ORR of N-doped carbon-based composite material including Fe and Co showed superiority to that of N-doped carbon-based composite material including Fe and Ni. The difference in the electrocatalytic performance for ORR is discussed regarding the difference in the specific surface area and the presence ratio of chemical bonding species. Full article
(This article belongs to the Special Issue Novel Electrode for High-Performance Supercapacitors and Electrocatalysis)
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