Carbonate-superstructured solid fuel cells with hydrocarbon fuels

Authors

Hanrui Su, Michigan Technological UniversityFollow
Wei Zhang, Michigan Technological UniversityFollow
Yun Hang Hu, Michigan Technological UniversityFollow

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.

Publisher's Statement

© 2022 the Author(s). Published by PNAS. Publisher’s version of record: https://doi.org/10.1073/pnas.2208750119

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