New Insights into Electrocatalysis

A special issue of ChemEngineering (ISSN 2305-7084).

Deadline for manuscript submissions: closed (30 July 2021) | Viewed by 6417

Special Issue Editor


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Guest Editor
Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, 45470 Mülheim, Germany
Interests: electrochemistry; electrocatalysis; energy conversion; surface science; oxygen reduction; oxygen evolution; nitrogen reduction

Special Issue Information

Dear Colleagues,

This Special Issue will focus on the latest developments in the understanding of electrocatalytic processes for energy conversion and storage.
As demands for alternative energy sources to fossil fuels increase and the effects of rising CO2 levels get more severe, the need for an energy transition towards more sustainable energy sources becomes obvious. Electrocatalysis can contribute to this transition in several ways: by developing catalysts for energy conversion devices like fuel cells and electrolyzers, developing alternative processes for the chemical industry that allow the use of intermittent energy sources, and by developing processes for carbon capture and utilization.
This has sparked a rising interest in electrocatalysis in the recent decades; nonetheless, significant progress is necessary in virtually all the mentioned fields in order to effectively contribute to the proliferation of renewable energy sources. Key issues are linked to the clarification of the processes at the electrode/electrolyte interface and its status under reaction conditions, such as: the identification of active sites, elucidation of adsorption processes on complex surfaces, surface restructuring and dealloying, improving catalyst stability and understanding the deactivation and dissolution mechanisms, tuning of adsorption energies, the possibility of breaking the scaling relations, etc. Addressing these issues necessitates a multidisciplinary approach, linking theory and experiment.

We invite original research articles, as well as reviews and perspective articles, with a focus on the understanding of electrochemical processes and providing new insights into electrocatalysis.

Dr. Viktor Čolić
Guest Editor

Manuscript Submission Information

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Keywords

  • electrochemistry
  • energy conversion
  • electrochemical energy storage
  • electrosynthesis
  • electrode/electrolyte interface

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Published Papers (1 paper)

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Review

18 pages, 7328 KiB  
Review
Electrocatalysts for the Oxygen Reduction Reaction: From Bimetallic Platinum Alloys to Complex Solid Solutions
by Ricardo Martínez-Hincapié and Viktor Čolić
ChemEngineering 2022, 6(1), 19; https://doi.org/10.3390/chemengineering6010019 - 16 Feb 2022
Cited by 7 | Viewed by 5534
Abstract
The oxygen reduction reaction has been the object of intensive research in an attempt to improve the sluggish kinetics that limit the performance of renewable energy storage and utilization systems. Platinum or platinum bimetallic alloys are common choices as the electrode material, but [...] Read more.
The oxygen reduction reaction has been the object of intensive research in an attempt to improve the sluggish kinetics that limit the performance of renewable energy storage and utilization systems. Platinum or platinum bimetallic alloys are common choices as the electrode material, but prohibitive costs hamper their use. Complex alloy materials, such as high-entropy alloys (HEAs), or more generally, multiple principal component alloys (MPCAs), have emerged as a material capable of overcoming the limitations of platinum and platinum-based materials. Theoretically, due to the large variety of active sites, this new kind of material offers the opportunity to identify experimentally the optimal binding site on the catalyst surface. This review discusses recent advances in the application of such alloys for the oxygen reduction reaction and existing experimental challenges in the benchmarking of the electrocatalytic properties of these materials. Full article
(This article belongs to the Special Issue New Insights into Electrocatalysis)
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