Document Type
Article
Publication Date
10-3-2022
Department
Department of Materials Science and Engineering
Abstract
A basic requirement for solid oxide fuel cells (SOFCs) is the sintering of electrolyte into a dense impermeable membrane to prevent the mixing of fuel and oxygen for a sufficiently high open-circuit voltage (OCV). However, herein, we demonstrate a different type of fuel cell, a carbonate-superstructured solid fuel cell (CSSFC), in which in situ generation of superstructured carbonate in the porous samarium-doped ceria layer creates a unique electrolyte with ultrahigh ionic conductivity of 0.17 S.cm21 at 550 °C. The CSSFC achieves unprecedented high OCVs (1.051 V at 500 °C and 1.041 V at 550 °C) with methane fuel. Furthermore, the CSSFC exhibits a high peak power density of 215 mW.cm22 with dry methane fuel at 550 °C, which is higher than all reported values of electrolyte-supported SOFCs. This provides a different approach for the development of efficient solid fuel cells.
Publication Title
Proceedings of the National Academy of Sciences of the United States of America
Recommended Citation
Su, H.,
Zhang, W.,
&
Hu, Y.
(2022).
Carbonate-superstructured solid fuel cells with hydrocarbon fuels.
Proceedings of the National Academy of Sciences of the United States of America,
119(41).
http://doi.org/10.1073/pnas.2208750119
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/16468
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Version
Publisher's PDF
Publisher's Statement
© 2022 the Author(s). Published by PNAS. Publisher’s version of record: https://doi.org/10.1073/pnas.2208750119