Preparation and Characterisation of Pelletised Glass Electrolytes for Fuel Cells

✍ Scribed by M. Nogami; K. Tanaka; T. Uma

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 326 KB
• Volume: 9
• Category: Article
• ISSN: 1615-6846
• DOI: 10.1002/fuce.200800091

✦ Synopsis

Abstract

This paper reports on the preparation and characterisation of pelletised glass electrolytes that were fabricated with a proton conducting glass derived from a sol–gel technique, and several kinds of binders. The electrolytes, consisting of a glass powder that had been pulverised by planetary ball milling and mixed with an orthophosphoric acid binder, gave rise to a maximum proton conductivity of 1.3 × 10^–2^ S cm^–1^ measured at 80 °C and 80% relative humidity. The pore diameter of the PGE was in this case ∼2 nm. The hydrogen gas permeability was analysed as a function of the temperature and was found to be on the order of 10^–10^ mol cm^–1^ s^–1^ Pa^–1^ at 100 °C. Current–voltage measurements were carried out at room temperature using the PGE under H~2~ and O~2~ flow. Power densities were obtained from the I–V curves during fuel cell operation at 80 °C and 100% R.H.