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Coatings
Special Issues
Surface Electrochemistry: Corrosion and Electrode Materials
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Surface Electrochemistry: Corrosion and Electrode Materials

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Engineering for Energy Harvesting, Conversion, and Storage".

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 11550

Special Issue Editors

Dr. Yanpeng Xue

E-Mail Website
Guest Editor
National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China
Interests: surface engineering; electrochemistry; electroplating; microarc oxidation; laser cladding; thermal spraying
Special Issues, Collections and Topics in MDPI journals
Dr. Guochen Zhao

E-Mail Website
Guest Editor
Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Interests: surface engineering; electrochemistry; functional materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We would like to invite you to submit your work to this Special Issue on “Surface Electrochemistry: Corrosion and Electrode Materials”. Surface electrochemistry focuses on electrochemical reactions involving the transfer of electric charge across the electrode/solution interface, which are inherently associated with thermodynamic and kinetic processes of electrode interfaces, chemical bonding of adsorbates, and electrocatalytic reactivity and bonding of water molecules and anions on electrode surfaces. The surface interaction of electrode materials with the environment is at the basis of the electrochemical reactions for energy conversion and the electrochemical behavior of metallic materials. Through an in-depth analysis of the important electrochemical reaction processes, the surface reaction mechanism at surfaces and interfaces can be illustrated and understood to advance the development of energy conversion material technologies for the benefit of industry and society alike. With the proper design and fabrication of coatings and microstructures, a significant improvement in corrosion resistance can be obtained for advanced applications in harsh environments. This Special Issue aims to collect the latest developments in this area, with special emphasis on surface electrochemistry as well as industrial applications in corrosion protection areas and electrode materials for energy conversion. Contributions from academic research, application-oriented research, and industrial field studies are welcome.

In particular, the topic of interest includes but is not limited to

  • Surface electrochemistry;
  • Electrode/solution interfaces;
  • Corrosion mechanism of metallic materials;
  • Electrode materials for metallurgy;
  • Nanostructured electrocatalysts;
  • Electrode materials for batteries, fuel cells, solar cells, and sensors;
  • Electrochemical characterization;
  • Corrosion-resistant coatings;
  • Biomimetic coatings.

Dr. Yanpeng Xue
Dr. Guochen Zhao
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. Coatings is an international peer-reviewed open access monthly 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.

Published Papers (5 papers)

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Research

17 pages, 6845 KiB  
Article
Effect of Graphite Content on the Conductivity, Wear Behavior, and Corrosion Resistance of the Organic Layer on Magnesium Alloy MAO Coatings
by Zhongjun Leng, Tao Li, Xitao Wang, Suqing Zhang and Jixue Zhou
Coatings 2022, 12(4), 434; https://doi.org/10.3390/coatings12040434 - 24 Mar 2022
Cited by 7 | Viewed by 2570
Abstract
To impart electrical conductivity on magnesium alloy micro-arc oxidation coatings, a graphite/epoxy conductive layer was prepared on the surface of a ceramic layer in this work, focusing on wear behavior and corrosion resistance of the coating. At a graphite weight of 80 wt%, [...] Read more.
To impart electrical conductivity on magnesium alloy micro-arc oxidation coatings, a graphite/epoxy conductive layer was prepared on the surface of a ceramic layer in this work, focusing on wear behavior and corrosion resistance of the coating. At a graphite weight of 80 wt%, the square resistance of the coating decreased to 217.6 kΩ/□, and it exhibited good resistance. Combined with the distribution of graphite particles in the coating and the change in surface resistance, we determined that the conductive mechanism of the coating occurred through quantum tunneling when the graphite content was 60 wt%. When the graphite content increased from 60 to 80 and 100 wt%, the formation of conductive paths on the surface of the coating further improved the conductivity. The hardness of the organic coatings was positively related to the graphite content. Analysis of the wear scars and wear debris after dry friction and wear testing showed that the wear forms of the coating consisted of abrasive wear when the graphite content was in the range of 20–40 wt%. When the graphite content was in the range of 60–100 wt%, the wear forms of the coating consisted of abrasive wear and peeling wear. Full article
(This article belongs to the Special Issue Surface Electrochemistry: Corrosion and Electrode Materials)
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15 pages, 5683 KiB  
Article
The Discharge Performance of Mg-3In-xCa Alloy Anodes for Mg–Air Batteries
by Huikun Liu, Guochen Zhao, Hang Li, Shouqiu Tang, Dapeng Xiu, Jin Wang, Huan Yu, Kaiming Cheng, Yuanfeng Huang and Jixue Zhou
Coatings 2022, 12(4), 428; https://doi.org/10.3390/coatings12040428 - 23 Mar 2022
Cited by 5 | Viewed by 1936
Abstract
Considering the advantage of safety and cost, designing a Mg–air battery with high capacity has been highly sought in recent years. However, self-corrosion and passivation of Mg anode critically reduce discharge performance, hindering the large-scale application of Mg–air batteries. In this study, a [...] Read more.
Considering the advantage of safety and cost, designing a Mg–air battery with high capacity has been highly sought in recent years. However, self-corrosion and passivation of Mg anode critically reduce discharge performance, hindering the large-scale application of Mg–air batteries. In this study, a series of as-cast and extruded Mg-3In-xCa alloys were successfully fabricated. Microstructures, chemical composition, and discharge performance were investigated to optimize the content of Ca (x). The selected Mg–air battery with Mg-3In-3Ca alloy as anode represented the best battery performance, including 0.738 V of discharge voltage, 1323.92 mAh g−1 of specific capacity, and 61.74% of anodic efficiency at discharge current density of 30 mA cm−2. All of its parameters were vastly superior to pure Mg–air battery. In addition, the synergistic effects of In and Ca on promoting electrode properties were evaluated in detail, using SEM and electrochemical analysis, which is expected to trigger follow-up research in designing high-performance Mg–air batteries. Full article
(This article belongs to the Special Issue Surface Electrochemistry: Corrosion and Electrode Materials)
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18 pages, 6296 KiB  
Article
A Study of Multi-Pass Laser-Cladding 2205 Duplex Stainless Steel Coating: Microstructure, Electrochemical Corrosion Behavior, and Wear-Resistance Properties
by Feifei Huang, Erju Liu, Yi Qin, Qingrui Wang, Ying Jin, Lei Wen and Hai Chang
Coatings 2022, 12(2), 229; https://doi.org/10.3390/coatings12020229 - 10 Feb 2022
Cited by 5 | Viewed by 2558
Abstract
By applying 2205 duplex stainless steel powders to repair and improve carbon steel, multi-pass laser-cladding tests were conducted on Q235 carbon steel surfaces with different laser powers in the range of 1.9~2.5 kW in order to evaluate the performance of the laser-cladding layers. [...] Read more.
By applying 2205 duplex stainless steel powders to repair and improve carbon steel, multi-pass laser-cladding tests were conducted on Q235 carbon steel surfaces with different laser powers in the range of 1.9~2.5 kW in order to evaluate the performance of the laser-cladding layers. The phase composition, macro- and microstructure, electrochemical corrosion resistance, friction, and wear resistance of the laser-cladding layers were investigated. Macroscopic observation identified no obvious cracks. The phases that made up the multi-pass laser-cladding layers were γ-Fe and α-Fe. Owing to the optimal laser power at 2.3 kW, a large number of equiaxed crystals and a small number of cellular crystals made up the microstructure of the prepared laser-cladding layer, which contributed to its good corrosion resistance. The wear resistance of the multi-pass laser-cladding layer and the carbon steel was also studied. A combined action of adhesive wear and abrasive wear, accompanied by oxidative wear, was determined through observation of pits and furrows on the friction surface of the multi-pass laser-cladding layer, while a typical mechanism of abrasive wear was confirmed by checking the friction surface of the carbon steel. Full article
(This article belongs to the Special Issue Surface Electrochemistry: Corrosion and Electrode Materials)
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16 pages, 3778 KiB  
Article
A Comparative Study of Fabricating IrOx Electrodes by High Temperature Carbonate Oxidation and Cyclic Thermal Oxidation and Quenching Process
by Feifei Huang, Qingrui Wang, Weipeng Wang, Jiangshun Wu, Shuqiang Wang, Yang Zou, Peng Bi, Lei Wen and Ying Jin
Coatings 2021, 11(10), 1202; https://doi.org/10.3390/coatings11101202 - 30 Sep 2021
Cited by 4 | Viewed by 1782
Abstract
IrOx electrodes were fabricated by cyclic thermal heating and water quenching (CHQ) process and high temperature carbonate oxidation (HCO), respectively. By examining the E-pH relationship, response rate, potential drift behavior of the fabricated electrodes, the electrodes prepared by CHQ process seemed to [...] Read more.
IrOx electrodes were fabricated by cyclic thermal heating and water quenching (CHQ) process and high temperature carbonate oxidation (HCO), respectively. By examining the E-pH relationship, response rate, potential drift behavior of the fabricated electrodes, the electrodes prepared by CHQ process seemed to show better comprehensive performance. Characterization tests such as scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and electrochemical impedance spectroscopy (EIS) were used to characterize the fabricated IrOx electrodes and find out the reason for the better performance of the electrodes prepared by CHQ process. Morphology tests indicate that the CHQ electrode shows a multi-layer structure with more ion channels, which could provide larger surface area for the H+ response process. Furthermore, combining the XPS, Raman and EIS tests etc., more effective response composition, better crystal quality, and smaller response reaction resistance of surface IrOx film could account for the better performance of the CHQ-fabricated IrOx electrode. The film formation process, H+ response mechanism, as well as the response behavior difference between the two kinds of the electrodes are further elaborated. Full article
(This article belongs to the Special Issue Surface Electrochemistry: Corrosion and Electrode Materials)
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11 pages, 2797 KiB  
Article
Interactions in Composite Film Formation of Mefp-1/graphene on Carbon Steel
by Jie Cheng, Nanxuan Mei, Sulin Chen, Pengpeng Bai, Bin Shen, Jinshan Pan and Fan Zhang
Coatings 2021, 11(10), 1161; https://doi.org/10.3390/coatings11101161 - 27 Sep 2021
Cited by 2 | Viewed by 1738
Abstract
Mefp-1 adhesive protein derived from marine blue mussels, together with the 2D material graphene, was used to build the green composite film with enhanced anti-corrosion property and mechanical strength. The corrosion inhibition of the composite film, formed by different methods, was evaluated [...] Read more.
Mefp-1 adhesive protein derived from marine blue mussels, together with the 2D material graphene, was used to build the green composite film with enhanced anti-corrosion property and mechanical strength. The corrosion inhibition of the composite film, formed by different methods, was evaluated by using electrochemical impedance spectroscopy. The non-degraded adhesion of the composite film to the carbon steel substrate was proved by nano-scratch tests. Infrared spectroscopy was utilized to investigate the film formation process and “three-body interactions” between Mefp-1, graphene and carbon steel surface. The results show that the Mefp-1 adsorbs on the carbon steel surface mainly through the covalent bond between catechols and Fe(III). Meanwhile, Mefp-1 can bond to non-adhesive graphene by forming hydrogen bonds and π−π interaction non-covalent bonds, which facilitate the formation of a robust Mefp-1/graphene composite film on the carbon steel surface. Full article
(This article belongs to the Special Issue Surface Electrochemistry: Corrosion and Electrode Materials)
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