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标题：Non‐destructive platinum catalyst‐replenishment method for deteriorated polymer electrolyte membrane fuel cells
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作者：Jaeyeon Kim ; Hongnyung Yoo ; Hyeok Kim 等
期刊名称：Energy Science & Engineering
电子版ISSN：2050-0505
出版年度：2022
卷号：10
期号：2
页码：414-422
DOI：10.1002/ese3.1029
语种：English
出版社：John Wiley & Sons, Ltd.
摘要：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.
关键词：catalyst layer deterioration;catalyst replenishment;electrochemical impedance spectroscopy, fuel cell cleaning;polymer electrolyte membrane fuel cell