A Stability Study of Alkali Doped PBI Membranes for Alkaline Electrolyzer Cells

Jens Oluf Jensen (Invited author), David Aili (Invited author), Martin Kalmar Hansen (Invited author), Qingfeng Li (Invited author), Niels Janniksen Bjerrum (Invited author), Erik Christensen (Invited author)

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Abstract

Polybenzimidazole membranes in a linear, a crosslinked and a thermally cured form were subjected to aging in 6 M aqueous KOH at 85 ºC for periods of up to 176 days. The aged membranes were characterized with respect to weight loss, mechanical properties and ionic conductivity. The area specific conductivity was similar to a commercial Zirfon membrane and suitable for a water electrolyzer. Some chemical degradation was seen during the aging period, but the crosslinked and the cured materials were both integral after 176 days of aging. A simplified electrolyzer test cell was operated successfully.
Original languageEnglish
JournalECS Transactions
Volume64
Issue number3
Pages (from-to)1175-1184
Number of pages10
ISSN1938-5862
DOIs
Publication statusPublished - 2014
Event226th Meeting of the Electrochemical Society (ECS) and 7th Meeting of the Mexico Section of the Electrochemical Society ECS and SMEQ Joint International Meeting : Joint international meeting - Cancun, Mexico
Duration: 5 Oct 20149 Oct 2014
Conference number: 226

Conference

Conference226th Meeting of the Electrochemical Society (ECS) and 7th Meeting of the Mexico Section of the Electrochemical Society ECS and SMEQ Joint International Meeting
Number226
CountryMexico
CityCancun
Period05/10/201409/10/2014

Bibliographical note

©The Electrochemical Society

Keywords

  • Alkaline FCs
  • Ion Transport

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