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Science 14 April 2006:
Vol. 312. no. 5771, pp. 254 - 257
DOI: 10.1126/science.1125877
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Reports

Double Perovskites as Anode Materials for Solid-Oxide Fuel Cells

Yun-Hui Huang, Ronald I. Dass, Zheng-Liang Xing, John B. Goodenough*

Extensive efforts to develop a solid-oxide fuel cell for transportation, the bottoming cycle of a power plant, and distributed generation of electric energy are motivated by a need for greater fuel efficiency and reduced air pollution. Barriers to the introduction of hydrogen as the fuel have stimulated interest in developing an anode material that can be used with natural gas under operating temperatures 650°C < T < 1000°C. Here we report identification of the double perovskites Sr2Mg1-xMnxMoO6-{delta} that meet the requirements for long-term stability with tolerance to sulfur and show a superior single-cell performance in hydrogen and methane.

Texas Materials Institute, ETC 9.102, The University of Texas at Austin, Austin, TX 78712, USA.

* To whom correspondence should be addressed. E-mail: jgoodenough{at}mail.utexas.edu

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Science. ISSN 0036-8075 (print), 1095-9203 (online)