Electrocatalysts for Oxygen Reduction and Evolution
A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Electrocatalysis".
Deadline for manuscript submissions: closed (31 December 2022)
Special Issue Editors
Interests: energy storage devices; water electrolysis; nanoscience and technology
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
The consumption of fossil fuels results in environmental pollutions and short energy storage. The research on clean and sustainable energy and its storage is considered the most promising topic in the 21st century, including water electrolysis for hydrogen production, metal air batteries, and fuel cells for energy storage.
Either in electrolysis or in energy storage, oxygen reduction reaction (ORR) happens during discharging at the cathode and oxygen evolution reaction (OER) takes place during charging at the anode. Both ORR and OER reactions show sluggish kinetics. They are the limiting steps for the overall reactions. Therefore, it is important to find suitable bifunctional oxygen electrocatalysts that could enhance the reaction rates of ORR and OER during charging and discharging.
The traditional electrocatalysts that efficiently accelerate the ORR/OER are mainly noble metals, which lack bifunctionality, for example, Pt and Pt-based materials have high catalytic activity for ORR, but low for OER; by contrast, Ru and IrO2 are the top electrocatalysts for OER, but poor for ORR. Currently, some research groups report the development of carbon/graphene and non-precious metal oxide (perovskite)-based bifunctional electrocatalysts with good catalytic performance, but stability and relatively high overpotentials are still concerns.
We invite researchers to contribute original research papers as well as review/perspective articles on bifunctional electrocatalysts that could enhance oxygen reactions in energy storage and conversion devices.
Dr. Meng Zhou
Prof. Dr. Martha C. Mitchell
Guest Editors
Dr. Meng Zhou
Prof. Dr. Martha C. Mitchell
Guest Editors
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Keywords
- ORR
- OER
- bifunctional
- electrocatalyst
- perovskites
- energy storage
- hydrogen production
- water electrolysis
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