고분자전해질연료전지 연료극의 이오노머 함량에따른 CO 내피독 특성 연구
Study on the CO Tolerance of Anode Catalyst Layers with Ionomer Content for Polymer Electrolyte Membrane Fuel Cells
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This paper reports the effects of the ionomer content on CO tolerance in a PtRu/C-based anode catalyst layer tounderstand the role of ionomer binders for CO poisoning of the electrocatalyst and to design a durable catalyst layer of MEA. Fourdifferent MEAs were prepared with ionomer contents of 20, 30, 40, and 50 wt. % for the anode and a fixed ionomer content of 30 wt. % for the cathode. The MEA performance was then tested under hydrogen and CO mixed gas feeding in a single cell to observe the COtolerance of the prepared MEAs. The MEA performance was largely dependent on the anode ionomer content under both hydrogenand CO mixed gas conditions, revealing the best cell performance at a 40 wt. % ionomer content. The MEA also showed the lowestcell potential decay under CO mixed gas compared to hydrogen at a 40 wt. % ionomer content. The present study provides insightsinto the design of an anode catalyst layer structure, including optimization of the ionomer content, which can be critical to the designof a high performance MEA for reformed gas applications.
Abstract
This paper reports the effects of the ionomer content on CO tolerance in a PtRu/C-based anode catalyst layer tounderstand the role of ionomer binders for CO poisoning of the electrocatalyst and to design a durable catalyst layer of MEA. Fourdifferent MEAs were prepared with ionomer contents of 20, 30, 40, and 50 wt. % for the anode and a fixed ionomer content of 30 wt. % for the cathode. The MEA performance was then tested under hydrogen and CO mixed gas feeding in a single cell to observe the COtolerance of the prepared MEAs. The MEA performance was largely dependent on the anode ionomer content under both hydrogenand CO mixed gas conditions, revealing the best cell performance at a 40 wt. % ionomer content. The MEA also showed the lowestcell potential decay under CO mixed gas compared to hydrogen at a 40 wt. % ionomer content. The present study provides insightsinto the design of an anode catalyst layer structure, including optimization of the ionomer content, which can be critical to the designof a high performance MEA for reformed gas applications.
참고문헌 (23)
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