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Updated: Jun 26, 2026

Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells

Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells

Published on: September 20, 2012

A thermally self-sustained micro solid-oxide fuel-cell stack with high power density.

Zongping Shao¹, Sossina M Haile, Jeongmin Ahn

¹Materials Science, California Institute of Technology, Pasadena, California 91125, USA.

|June 10, 2005

Summary

This study presents a thermally self-sustaining micro-solid-oxide fuel cell (SOFC) stack for portable power. It achieves rapid start-up and high power output using propane fuel in a single chamber design.

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Area of Science:

Materials Science
Electrochemistry
Energy Conversion

Background:

Polymer-electrolyte direct-methanol fuel cells are explored for portable power but have limitations.
Solid-oxide fuel cells (SOFCs) offer higher energy density but face thermal management challenges for small-scale applications.

Purpose of the Study:

To develop a thermally self-sustaining micro-SOFC stack for portable power generation.
To overcome the limitations of existing fuel cell technologies for portable applications.

Main Methods:

Demonstration of a micro-SOFC stack operating in a single chamber configuration.
Utilizing propane as fuel, enabling direct use of higher hydrocarbons.
Achieving thermal self-sustainability through catalytic oxidation reactions.

Main Results:

The micro-SOFC stack operates at 500-600 degrees C, maintaining thermal self-sustainability.
Rapid start-up capability was achieved.
A power output of approximately 350 mW at 1.0 V was obtained from a 1.42 cm2 cathode area.

Conclusions:

The developed micro-SOFC stack offers a promising solution for high-power portable energy generation.
This technology overcomes key challenges associated with SOFCs in portable applications, including thermal management and start-up time.