Specific approaches to dramatic reduction in stack activation time and perfect long-term storage for high-performance air-breathing polymer electrolyte membrane fuel cell

Seung Yong Yang, Dong Jun Seo, Myeong Ri Kim, Won Young Choi, Young Gi Yoon, Min Ho Seo, Beom Jun Kim, Chi Young Jung, Hansung Kim, Byungchan Han, Tae Young Kim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Air-breathing polymer electrolyte membrane fuel cell (PEMFC) systems without the humidifier and air blower have been developed to overcome the cost and complexity of balance of plants (BOPs). Until now, there has been no specific way to improve the stack's initial performance through the specific activation protocol and maintain the initial performance for a very long time. Herein, we studied a technique for finishing the total activation within 1 h by using a pre-activation process (i.e., soaking the stack in a DI-water reservoir) and applying current at 0.65 V. The pre-activation procedure significantly increased the swelling of the polymer membrane and the Nafion binder in the catalyst layer, reducing the total activation time. Also, we showed that long-term storage using humidified N2 gas in a closed box did not hinder the electrocatalytic activity of the Pt and the drying of the polymer membrane for 60 days.

Original languageEnglish
Pages (from-to)16288-16293
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume42
Issue number25
DOIs
Publication statusPublished - 2017 Jun 22

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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