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Recent Advances in Electrochemical-Related Materials
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Recent Advances in Electrochemical-Related Materials

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Materials Science".

Deadline for manuscript submissions: 20 July 2025 | Viewed by 2279

Special Issue Editor

Dr. Celia García-Hernandez

E-Mail Website
Guest Editor
BioEcoUVa, Escuela de Ingenierías Industriales, Universidad de Valladolid, Paseo del Cauce, 59, 47011 Valladolid, Spain
Interests: electrochemistry; food chemistry; sensors and biosensors; nanomaterials; nanotechnology; electrodeposition; materials science; metallurgical engineering

Special Issue Information

Dear Colleagues,

Electrochemical materials are widely used in advanced technology across fields such as electronics, energy, the environment, medicine, and sensors. Due to their importance, micro- and nanoscale electrochemical materials are continuously being developed to drive further innovation and, consequently, improve our everyday and future lives. Moreover, comprehensive knowledge of their fabrication, characterization, and performance evaluation plays a crucial role in designing and manufacturing appropriate electrochemical devices.

This Special Issue focuses on original experimental work, theoretical studies, and review articles that investigate compositions of electrochemical-related materials with the state of the art and advances within this topic. We welcome molecular research papers and review articles on topics related to electrochemical devices based on novel materials, including, but not limited to, batteries, fuel cell optimization, sensors and biosensors, photoelectrochemical cells, waste recovery and pollution treatments, supercapacitors, and electrolyzers. Research on interdisciplinary contributions offering new methodologies or ideas is especially welcome.

Dr. Celia García-Hernandez
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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. 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

  • novel electrochemical devices
  • advanced micro- and nanomaterials for electrochemical applications
  • batteries
  • fuel and photoelectrochemical cells
  • electrochemical sensors and biosensors
  • new advances in supercapacitors
  • electrochemical electrolyzers
  • advanced electrochemical materials for environmental applications

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (2 papers)

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Research

15 pages, 6733 KiB  
Article
Effects of Cr3+ Doping on Spinel LiMn2O4 Morphology and Electrochemical Performance
by Zhengqing Pei, Jiawei Wang, Haifeng Wang, Kexin Zheng, Qian Wang, Xinjie Zhou, Dehua Ma and Ju Lu
Int. J. Mol. Sci. 2024, 25(24), 13270; https://doi.org/10.3390/ijms252413270 - 10 Dec 2024
Viewed by 675
Abstract
LiMn2O4, a significant cathode material for lithium-ion batteries, has garnered considerable attention due to its low cost and environmental friendliness. However, its widespread application is constrained by its rapid capacity degradation and short cycle life at elevated temperatures. To [...] Read more.
LiMn2O4, a significant cathode material for lithium-ion batteries, has garnered considerable attention due to its low cost and environmental friendliness. However, its widespread application is constrained by its rapid capacity degradation and short cycle life at elevated temperatures. To enhance the electrochemical performance of LiMn2O4, we employed a liquid-phase co-precipitation and calcination method to incorporate Cr3+ into the LiMn2O4 cathode material, successfully synthesizing a series of LiCrxMn2−xO4 (x = 0~0.06). The prepared Cr-doped samples exhibited an excellent spinel structure and a unique truncated octahedral morphology. Additionally, the substitution of Mn3+ in LiMn2O4 by Cr3+, coupled with the significantly higher Cr-O bond energy compared to Mn-O bond energy, enhanced the stability of the crystal structure and inhibited the Jahn–Teller effect. Experimental results demonstrated that the optimized LiCr0.04Mn1.96O4 displayed superior electrochemical performance, with a capacity retention rate of 93.24% after 500 cycles under a 0.5C current density; even at 50 °C, the capacity retention rate remained at 86.46% after 350 cycles under a 0.5C current density. The polyhedral morphology formed by Cr doping in LiMn2O4 offers an effective approach to achieving high-performance LiMn2O4 cathode materials. Full article
(This article belongs to the Special Issue Recent Advances in Electrochemical-Related Materials)
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14 pages, 3669 KiB  
Article
Manganese Oxide-Doped Hierarchical Porous Carbon Derived from Tea Leaf Waste for High-Performance Supercapacitors
by Hsiu-Ying Chung, Hong-Min Chang and Chun-Pang Wang
Int. J. Mol. Sci. 2024, 25(20), 10884; https://doi.org/10.3390/ijms252010884 - 10 Oct 2024
Viewed by 823
Abstract
Hierarchical porous carbon derived from discarded biomass for energy storage materials has attracted increasing research attention due to its cost-effectiveness, ease of fabrication, environmental protection, and sustainability. Brewed tea leaves are rich in heteroatoms that are beneficial to capacitive energy storage behavior. Therefore, [...] Read more.
Hierarchical porous carbon derived from discarded biomass for energy storage materials has attracted increasing research attention due to its cost-effectiveness, ease of fabrication, environmental protection, and sustainability. Brewed tea leaves are rich in heteroatoms that are beneficial to capacitive energy storage behavior. Therefore, we synthesized high electrochemical performance carbon-based composites from Tie guan yin tea leaf waste using a facile procedure comprising hydrothermal, chemical activation, and calcination processes. In particular, potassium permanganate (KMnO4) was incorporated into the potassium hydroxide (KOH) activation agent; therefore, during the activation process, KOH continued to erode the biomass precursor, producing abundant pores, and KMnO4 synchronously underwent a redox reaction to form MnO nanoparticles and anchor on the porous carbon through chemical bonding. MnO nanoparticles provided additional pseudocapacitive charge storage capabilities through redox reactions. The results show that the amount of MnO produced is proportional to the amount of KMnO4 incorporated. However, the specific surface area of the composite material decreases with the incorporated amount of KMnO4 due to the accumulation and aggregation of MnO nanoparticles, thereby even blocking some micropores. Optimization of MnO nanocrystal loading can promote the crystallinity and graphitization degree of carbonaceous materials. The specimen prepared with a weight ratio of KMnO4 to hydrochar of 0.02 exhibited a high capacitance of 337 F/g, an increase of 70%, owing to the synergistic effect between the Tie guan yin tea leaf-derived activated carbon and MnO nanoparticles. With this facile preparation method and the resulting high electrochemical performance, the development of manganese oxide/carbon composites derived from tea leaf biomass is expected to become a promising candidate as an energy storage material for supercapacitors. Full article
(This article belongs to the Special Issue Recent Advances in Electrochemical-Related Materials)
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