Elucidation of role of graphene in catalytic designs for electroreduction of oxygen

TL;DR

This paper reviews how graphene's various modifications and strategies can enhance its role in oxygen electroreduction, crucial for fuel cell technology, by improving activity and stability.

Contribution

It provides a comprehensive overview of graphene-based approaches and strategies for catalytic oxygen reduction, highlighting recent advancements and design principles.

Findings

Graphene can serve as support or active site in electrocatalysts.

Various modification techniques improve catalytic activity and stability.

Strategies like doping and nanostructuring are effective in enhancing performance.

Abstract

Graphene is, in principle, a promising material for consideration as component (support, active site) of electrocatalytic materials, particularly with respect to reduction of oxygen, an electrode reaction of importance to low-temperature fuel cell technology. Different concepts of utilization, including nanostructuring, doping, admixing, preconditioning, modification or functionalization of various graphene-based systems for catalytic electroreduction of oxygen are elucidated, as well as important strategies to enhance the systems' overall activity and stability are discussed.