AI Article Synopsis
- ORR is gaining attention due to its potential in fuel cells and metal-air batteries, leading to a focus on developing effective and affordable electrocatalysts.
- The review covers reaction mechanisms, theoretical calculations, and current challenges in ORR electrocatalysis, highlighting advancements in various types of electrocatalysts, such as platinum, transition metals, and carbon-based materials.
- It also discusses the future prospects and challenges in the field, aiming to inform design guidelines for more efficient ORR electrocatalysts and contribute to understanding ORR mechanisms.
Article Abstract
Oxygen reduction reaction (ORR) has gradually been in the limelight in recent years because of its great application potential for fuel cells and rechargeable metal-air batteries. Therefore, significant issues are increasingly focused on developing effective and economical ORR electrocatalysts. This review begins with the reaction mechanisms and theoretical calculations of ORR in acidic and alkaline media. The latest reports and challenges in ORR electrocatalysis are traced. Most importantly, the latest advances in the development of ORR electrocatalysts are presented in detail, including platinum group metal (PGM), transition metal, and carbon-based electrocatalysts with various nanostructures. Furthermore, the development prospects and challenges of ORR electrocatalysts are speculated and discussed. These insights would help to formulate the design guidelines for highly-active ORR electrocatalysts and affect future research to obtain new knowledge for ORR mechanisms.
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| http://dx.doi.org/10.1016/j.jcis.2021.09.008 | DOI Listing |
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