Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 47, Issue 3, Pages 1863-1873Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2021.10.226
Keywords
7 October 2021; cell; Cell reversal; Additives; Electrode; Durability
Categories
Funding
- Endowment project of A Study on Prevention of Failure and Improvement of Durability for Hydrogen Fuel Cell System in Fuel Starvation Condition, - Korea Research Institute of Ships and Ocean Engineering [PES4180]
- Incheon National University Research Grant (2019)
- Korea Institute of Marine Science & Technology Promotion (KIMST) [PES4180] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Research on corrosion reaction of carbon under cell reversal conditions and the effect of platinum content on fuel cell performance have been conducted, showing that catalysts with higher platinum content have better resistance to cell reversal.
Cell reversal is observed when a current load is applied to the polymer electrolyte membrane fuel cell under fuel starvation conditions. Cell reversal causes severe corrosion (or oxidation) of the carbon support in the anode, which leads to a decrease in overall fuel cell performance. To suppress the corrosion reaction of carbon under cell reversal conditions and to increase the durability of fuel cells, studies on anode additives are being conducted. However, studies on the effect of additives on catalysts with different platinum contents have not been conducted. In this study, 20 wt%, 40 wt%, 60 wt% commercial Pt/C catalyst was applied to the anode, and 50 cycles of cell reversal were performed. Furthermore, the performance change with and without IrO2 as an additive was observed and its effect was assessed. Changes in the morphologies of the electrodes before and after cell reversal tests were also observed using a transmission electron microscope and a scanning electron microscope. The higher the platinum content of the catalyst, the more resistant to cell
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