Non-destructive platinum catalyst-replenishment method for deteriorated polymer electrolyte membrane fuel cells
- Authors
- Kim, Jaeyeon; Yoo, Hongnyung; Kim, Hyeok; Kim, Dasol; Kim, Geon Hwi; Kwon, Obeen; Choi, Heesoo; Cha, Hyeonjin; Park, Taehyun
- Issue Date
- Feb-2022
- Publisher
- WILEY
- Keywords
- catalyst layer deterioration; catalyst replenishment; electrochemical impedance spectroscopy; fuel cell cleaning; polymer electrolyte membrane fuel cell
- Citation
- ENERGY SCIENCE & ENGINEERING, v.10, no.2, pp.414 - 422
- Journal Title
- ENERGY SCIENCE & ENGINEERING
- Volume
- 10
- Number
- 2
- Start Page
- 414
- End Page
- 422
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/41944
- DOI
- 10.1002/ese3.1029
- ISSN
- 2050-0505
- Abstract
- A novel method for replenishing platinum catalysts on an electrolyte membrane of polymer electrolyte membrane fuel cell (PEMFC) is studied. The method injects electrocatalyst-supplementing ink into a pre-assembled fuel cell in a simple and non-destructive manner. For replenishing, straightforward catalyst-replenishment equipment and corresponding protocol are proposed. The protocol consists of injection, penetration, and purge processes. As a feasibility study, the method is performed on fuel cells with pristine membranes. Target fuel cells for this study include a membrane-assembled cell without catalyst layers (CLs) (Cell 1) and a cell assembled with a membrane-coated cathodic CL (Cell 2). An open-circuit voltage of 0.804 V in Cell 1 and a current of 77 mA in Cell 2 are measured, as supported through electrochemical impedance spectroscopy. Results of energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy also support the presence of platinum catalysts.
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Collections - College of Engineering > ETC > 1. Journal Articles
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