High-Performance Solid Acid Fuel Cells Through Humidity Stabilization

Dane A. Boysen, Tetsuya Uda, Calum R I Chisholm, Sossina M. Haile*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

435 Scopus citations


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°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 ∼250°C using a humidity-stabilized solid acid CsH 2PO4 electrolyte.

Original languageEnglish (US)
Pages (from-to)68-70
Number of pages3
Issue number5654
StatePublished - Jan 2 2004

ASJC Scopus subject areas

  • General


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