TY - JOUR
T1 - Advanced Air Electrodes for Reversible Protonic Ceramic Electrochemical Cells
T2 - A Comprehensive Review
AU - Chen, Xi
AU - Tan, Yeshu
AU - Li, Zheng
AU - Liu, Tong
AU - Song, Yinghao
AU - Zhai, Shuo
AU - Yu, Na
AU - Shao, Zongping
AU - Ni, Meng
N1 - Publisher Copyright:
© 2025 The Author(s). Advanced Materials published by Wiley-VCH GmbH.
PY - 2025
Y1 - 2025
N2 - Reversible protonic ceramic electrochemical cells (R-PCECs) have great potential for efficient and clean power generation, energy storage, and sustainable synthesis of high-value chemicals. However, the sluggish and unstable kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in the air electrode hinder the R-PCEC development. Durable H+/e−/O2− triple-conducting air electrode materials are promising for enhancing reaction kinetics and improving catalytical stability. This review synthesizes the recent progress in triple-conducting air electrodes, focusing on their working mechanisms, including electrode kinetics, lattice and its defect structure in oxides, and the generation and transport processes of H+, O2−, and e−. It also examines the required physicochemical properties and their influencing factors. By synthesizing and critically analyzing the latest theoretical frameworks, advanced materials, and regulation strategies, this review outlines the challenges and prospects shaping the future of R-PCEC technology and air electrode development. Based on these theories and multiple strategies about the bulk triple conducting properties and surface chemical states, this review provides practical guidance for the rational design and development of efficient and stable air electrode materials for R-PCECs and related electrocatalytic materials.
AB - Reversible protonic ceramic electrochemical cells (R-PCECs) have great potential for efficient and clean power generation, energy storage, and sustainable synthesis of high-value chemicals. However, the sluggish and unstable kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in the air electrode hinder the R-PCEC development. Durable H+/e−/O2− triple-conducting air electrode materials are promising for enhancing reaction kinetics and improving catalytical stability. This review synthesizes the recent progress in triple-conducting air electrodes, focusing on their working mechanisms, including electrode kinetics, lattice and its defect structure in oxides, and the generation and transport processes of H+, O2−, and e−. It also examines the required physicochemical properties and their influencing factors. By synthesizing and critically analyzing the latest theoretical frameworks, advanced materials, and regulation strategies, this review outlines the challenges and prospects shaping the future of R-PCEC technology and air electrode development. Based on these theories and multiple strategies about the bulk triple conducting properties and surface chemical states, this review provides practical guidance for the rational design and development of efficient and stable air electrode materials for R-PCECs and related electrocatalytic materials.
KW - air electrodes
KW - oxygen evolution reaction
KW - oxygen reduction reaction
KW - reversible protonic ceramic electrochemical cells
KW - triple conductivity
UR - http://www.scopus.com/inward/record.url?scp=105001694230&partnerID=8YFLogxK
U2 - 10.1002/adma.202418620
DO - 10.1002/adma.202418620
M3 - 文献综述
AN - SCOPUS:105001694230
SN - 0935-9648
JO - Advanced Materials
JF - Advanced Materials
ER -