TY - JOUR
T1 - Photo-assisted synthesis of protonated oxides for fuel cells
AU - Nazar, Atif
AU - Bibi, Bushra
AU - Lou, Chenjie
AU - Yang, Fan
AU - Qi, Fan
AU - Jing, Yifu
AU - Li, Shukui
AU - Raza, Rizwan
AU - Yousaf, Muhammad
AU - Afzal, Muhammad
AU - Nazar, Kashif
AU - Tang, Mingxue
AU - Fan, Liangdong
AU - Zhu, Bin
N1 - Publisher Copyright:
© The Author(s) 2025.
PY - 2025/12
Y1 - 2025/12
N2 - The absence of intrinsic protons in proton-conducting oxides (PCO) is a significant challenge that limits the proton conductivity of proton-conducting perovskites, such as Y-doped BaMO3 (M = Zr, Ce), in proton ceramic fuel cells exhibit low conductivity (10-3 to 10-2 S cm-1 at 600 °C). Herein, we introduce a photo-assisted synthesis method for incorporating protons into Al-doped ceria (AlxCe1-xO2-δ, x = 0.2; M-ACO), leveraging the open cubic fluorite structure and photo-activated radical reactions. Specifically, photon-generated hydroxyl reactive OH∙ and superoxide (O2∙−) Radicals are generated and interact with the ACO crystal lattice, facilitating proton incorporation and resulting in the synthesis of native-proton-type PCO. This process results in a protonated (H-ACO) with a high proton conductivity of 0.14 S cm-1 and exceptional power density of 922 mW cm-2 at 500 °C. This versatile synthesis methodology offers broader development of advanced PCO for energy-related applications.
AB - The absence of intrinsic protons in proton-conducting oxides (PCO) is a significant challenge that limits the proton conductivity of proton-conducting perovskites, such as Y-doped BaMO3 (M = Zr, Ce), in proton ceramic fuel cells exhibit low conductivity (10-3 to 10-2 S cm-1 at 600 °C). Herein, we introduce a photo-assisted synthesis method for incorporating protons into Al-doped ceria (AlxCe1-xO2-δ, x = 0.2; M-ACO), leveraging the open cubic fluorite structure and photo-activated radical reactions. Specifically, photon-generated hydroxyl reactive OH∙ and superoxide (O2∙−) Radicals are generated and interact with the ACO crystal lattice, facilitating proton incorporation and resulting in the synthesis of native-proton-type PCO. This process results in a protonated (H-ACO) with a high proton conductivity of 0.14 S cm-1 and exceptional power density of 922 mW cm-2 at 500 °C. This versatile synthesis methodology offers broader development of advanced PCO for energy-related applications.
UR - http://www.scopus.com/inward/record.url?scp=105003301100&partnerID=8YFLogxK
U2 - 10.1038/s42004-025-01488-0
DO - 10.1038/s42004-025-01488-0
M3 - Article
AN - SCOPUS:105003301100
SN - 2399-3669
VL - 8
JO - Communications Chemistry
JF - Communications Chemistry
IS - 1
M1 - 120
ER -