Long-term durability of HT-PEM fuel cells based on thermally cross-linked polybenzimidazole

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• 作者：Tonny Sø ; ndergaard^a ; Lars Nilausen Cleemann^a ; Hans Becker^a ; David Aili^a ; Thomas Steenberg^b ; Hans Aage Hjuler^b ; Larisa Seerup^a ; Qingfeng Li^a ; ^qfli@dtu.dk ; Jens Oluf Jensen^a
• 关键词：Durability ; Polymer electrolyte membrane ; Fuel cell ; Polybenzimidazole ; Cross-linking ; Thermally cured
• 刊名：Journal of Power Sources
• 出版年：2017
• 出版时间：28 February 2017
• 年：2017
• 卷：342
• 期：Complete
• 页码：570-578
• 全文大小：1394 K
• 卷排序：342

文摘

High temperature PEMFC durability studied under steady state conditions for over 13,000 h. Well defined beginning-of-life and end-of-test with minimal operational disturbance. Lowest degradation rate of 0.5 μV h−1 within first 9200 h reported for cross-linked membranes. Average voltage decay rate of about 1.4 μV h−1 with 13,000 h versus 4.6 μV h −1 for reference. EIS and post mortem analysis showed improved acid retention of the cross-linked membrane.