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Science. 2004 Jan 2;303(5654):68-70. Epub 2003 Nov 20.

High-performance solid Acid fuel cells through humidity stabilization.

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

Abstract

Although they hold the promise of clean energy, state-of-the-art fuel cells based on polymer electrolyte membrane fuel cells are inoperable above 100 degrees C, require cumbersome humidification systems, and suffer from fuel permeation. These difficulties all arise from the hydrated nature of the electrolyte. In contrast, "solid acids" exhibit anhydrous proton transport and high-temperature stability. We demonstrate continuous, stable power generation for both H2/O2 and direct methanol fuel cells operated at approximately 250 degrees C using a humidity-stabilized solid acid CsH2PO4 electrolyte.

PMID:
14631049
DOI:
10.1126/science.1090920
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