Advanced Electrocatalysts for Clean and Renewable Energy Conversion and Storage Processes

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Catalysis Enhanced Processes".

Deadline for manuscript submissions: 30 July 2025 | Viewed by 2922

Special Issue Editors


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Guest Editor
Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12–16, 11158 Belgrade, Serbia
Interests: electrochemistry; material characterization; nanomaterial synthesis; oxygen reduction reaction; oxygen evolution reaction; hydrogen evolution reaction; hydrogen peroxide reduction reaction; borohydride oxidation reaction; alkaline fuel cells; metal–air batteries; sensing and detection of heavy metals (As, Pb, and Cd); electroanalytical detection of phenols; nitrophenols nitrobenzene and dinitrobenzene

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Guest Editor
Department of Catalysis, Center for Physical Sciences and Technology, Saulėtekio Ave. 3, LT-10257 Vilnius, Lithuania
Interests: catalyst; anode materials; oxidation; fuel cells; alkaline fuel cells; cyclic voltammetry; electrochemistry; material characterization; nanomaterial synthesis
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Special Issue Information

Dear Colleagues,

Electrochemical devices such as metal–air batteries, water-splitting cells, and alkaline fuel cells present clean, green, and renewable energy technologies, and they have been widely examined in recent decades. Namely, the crucial impacts of their high performances are electrocatalysts for hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR). The state-of-the-art electrocatalysts for all three reactions are noble metal-based catalysts where Pt/C is the best electrocatalyst for HER and ORR and IrO2 and RuO2 for OER. On the other hand, the scarcity and high cost of these electrocatalysts present a huge disadvantage in their application in renewable energy technologies. Because of this, it is fundamentally important to make and explore low-cost electrocatalysts with high activity and stability for HER, OER, and ORR.

This Special Issue, entitled  ̎Advanced Electrocatalysts for Clean and Renewable Energy Conversion and Storage Processes ̎, will focus on novel, easy synthesis and low-cost electrocatalysts with high activity for HER, and/or ORR, and/or OER in alkaline media.

Dr. Jadranka Milikić
Dr. Aldona Balčiūnaitė
Guest Editors

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Keywords

  • hydrogen evolution reaction
  • oxygen evolution reaction
  • oxygen reduction reaction
  • bifunctional electrocatalysts
  • metal-air batteries
  • water-splitting cells
  • alkaline fuel cells
  • low-cost electrocatalysts

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Published Papers (2 papers)

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Research

12 pages, 2559 KiB  
Article
CoM-ZSM5 (M = Zn and Ni) Zeolites for an Oxygen Evolution Reaction in Alkaline Media
by Jadranka Milikić, Srna Stojanović, Katarina Rondović, Ljiljana Damjanović-Vasilić, Vladislav Rac and Biljana Šljukić
Processes 2024, 12(5), 907; https://doi.org/10.3390/pr12050907 - 29 Apr 2024
Cited by 1 | Viewed by 1054
Abstract
An ion-exchange procedure of synthetic zeolite ZSM-5 (Si/Al = 15) was used to prepare three cobalt ZSM-5 zeolites (CoM-ZSM5 (M = Zn and Ni)) that were examined for OERs in alkaline media. The structural, morphological, and surface properties of the prepared materials were [...] Read more.
An ion-exchange procedure of synthetic zeolite ZSM-5 (Si/Al = 15) was used to prepare three cobalt ZSM-5 zeolites (CoM-ZSM5 (M = Zn and Ni)) that were examined for OERs in alkaline media. The structural, morphological, and surface properties of the prepared materials were studied by X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy with energy dispersive spectroscopy, and low-temperature nitrogen adsorption. All three electrocatalysts showed OER activity where CoNi-ZSM5 presented the highest current density (9.5 mA cm−2 at 2 V), the lowest Tafel slope (134 mV dec−1), and the lowest resistances of the charge transfer reaction (31.5 Ω). Overpotential (ηonset) at an onset potential of 410 mV for both CoNi-ZSM5 and Co-ZSM5 and 440 mV for CoZn-ZSM5 electrodes was observed. Co-ZSM5 showed somewhat lower OER catalytic activity than CoNi-ZSM5, while CoZn-ZSM5 demonstrated the lowest OER catalytic activity. The Rct of CoZn-ZSM5 is significantly higher than the Rct of CoNi-ZSM5, which could lead to their different OER activities. Good OER stability and low price are the main advantages of the synthesized CoM-ZSM5 samples in this study. Full article
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22 pages, 4973 KiB  
Article
Optimizing Oxygen Electrode Bifunctionality with Platinum and Nickel Nanoparticle-Decorated Nitrogen-Doped Binary Metal Oxides
by Dušan Mladenović, Yasemin Aykut, Ayşe B. Yurtcan, Gulin S. P. Soylu, Diogo M. F. Santos, Šćepan Miljanić and Biljana Šljukić
Processes 2024, 12(3), 453; https://doi.org/10.3390/pr12030453 - 23 Feb 2024
Viewed by 1504
Abstract
Developing bifunctional oxygen electrode materials with superior activity for oxygen reduction (ORR) and oxygen evolution (OER) reactions is essential for advancing regenerative fuel cell and rechargeable metal–air battery technologies. This present work deals with the synthesis and characterization of electrocatalysts containing Pt and [...] Read more.
Developing bifunctional oxygen electrode materials with superior activity for oxygen reduction (ORR) and oxygen evolution (OER) reactions is essential for advancing regenerative fuel cell and rechargeable metal–air battery technologies. This present work deals with the synthesis and characterization of electrocatalysts containing Pt and Ni nanoparticles supported on nitrogen-doped mixed metal oxides (Mn2O3-NiO) and the systematic evaluation of their bifunctional ORR/OER performance in an alkaline medium. These electrocatalysts have been successfully synthesized by a simple and fast microwave method. PtNi/Mn2O3-NiO-N with a binary metal oxide-to-N ratio of 1:2 demonstrated the best performance among the studied materials regarding bifunctional electrocatalytic activity (∆E = 0.96 V) and robust stability. Full article
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