Proton-conducting oxides for energy conversion and storage

Duan, Chuancheng; Huang, Jake; Sullivan, Neal; O'Hayre, Ryan

doi:10.1063/1.5135319

Title: Proton-conducting oxides for energy conversion and storage

Journal Article · 03 March 2020 · Applied Physics Reviews

DOI: https://doi.org/10.1063/1.5135319 · OSTI ID:1602576

;

; Sullivan, Neal;

Proton-conducting oxides are a class of solid-state ion-conducting ceramic materials that demonstrate significant hydrogen ion (proton) conductivity at intermediate temperatures (e.g., 300–700 °C). They are garnering significant attention due to several unique characteristics that distinguish them from both higher temperature oxygen ion conducting oxides and lower temperature proton-conducting polymers. By enabling proton-mediated electrochemistry under both dry and wet environments at moderate temperatures, protonic ceramics provide unique opportunities to enhance or synergize a diverse range of complementary electrochemical and thermochemical processes. Because of this potential, significant efforts have been devoted to advancing numerous energy-related applications using these materials. This review aims to comprehensively summarize these applications and analyze the most up-to-date and future developments of proton-conducting oxides. We aim to bring together this diverse subject matter by integrating the fundamentals of proton-conducting oxides with application-oriented insights. We begin with a historical roadmap, followed by a basic overview of the materials, theories and fundamentals, and fabrication and processing technologies underlying the field. The central section of our review summarizes major applications and developments of proton-conducting ceramics, ranging from maturing applications approaching commercialization to embryonic technologies just now emerging from the lab. These include protonic ceramic fuel cells, protonic ceramic electrolysis cells, reversible protonic ceramic electrochemical cells, protonic ceramic membrane reactors, and protonic ceramic electrochemical reactors. For each application, we analyze both the prospects and challenges and offer recommendations for future research directions so that tomorrow's researchers can continue to advance the development and commercialization of these fascinating materials.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: AR0000808; AR0000493; FE0031716

OSTI ID:: 1602576

Journal Information:: Applied Physics Reviews, Journal Name: Applied Physics Reviews Vol. 7 Journal Issue: 1; ISSN 1931-9401

Publisher:: American Institute of PhysicsCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 200 works

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