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Innovative Strategy for Developing PEDOT Composite Scaffold for Reversible Oxygen Reduction Reaction

journal contribution
posted on 2024-05-10, 00:31 authored by Rafael Del Olmo, Antonio Dominguez-Alfaro, Jorge L Olmedo-Martínez, Oihane Sanz, Cristina Pozo-GonzaloCristina Pozo-Gonzalo, Maria ForsythMaria Forsyth, Nerea Casado
Metal-air batteries are an emerging technology with great potential to satisfy the demand for energy in high-consumption applications. However, this technology is still in an early stage, facing significant challenges such as a low cycle life that currently limits its practical use. Poly(3,4-ethylenedioxythiophene) (PEDOT) conducting polymer has already demonstrated its efficiency as catalyst for oxygen reduction reaction (ORR) discharge as an alternative to traditional expensive and nonsustainable metal catalysts. Apart from that, in most electrochemical processes, three phenomena are needed: redox activity and electronic and ionic conduction. Material morphology is important to maximize the contact area and optimize the 3 mechanisms to obtain high-performance devices. In this work, porous scaffolds of PEDOT-organic ionic plastic crystal (OIPC) are prepared through vapor phase polymerization to be used as porous self-standing cathodes. The scaffolds, based on abundant elements, showed good thermal stability (200 °C), with potential ORR reversible electrocatalytic activity: 60% of Coulombic efficiency in aqueous medium after 200 cycles.

History

Journal

Journal of Physical Chemistry Letters

Pagination

4851-4857

Location

Washington, D.C.

ISSN

1948-7185

eISSN

1948-7185

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Publisher

American Chemical Society

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