A Study on Electrochemical Characteristics of MEA with Nafion Ionomer Content in Catalyst Layer for PEMFC

ABSTRACT In order to confirm the effect of Nafion ionomer content in catalyst layer on the performance of PEMFC, we have fabricated several electrodes which were prepared by varying the quantity of Nafion ionomer from 24 wt.% to 39 wt.% in catalyst layer. The effect of Nafion ionomer of each electrode was evaluated with cyclic voltammetry measurement. In addition, cell performance was obtained through single cell test using hydrogen and air. The Pt utilization and performance of single cell were changed by addition of Nafion ionomer to the electrode. Single cell fabricated with 33 wt.% of Nafion ionomer in catalyst layer showed the maximum Pt utilization and performance.KEY WORDS : Nafion ionomer(나피온 아이오노머), PEMFC(고분자 전해질 막 연료전지), Cell performance (셀 성능), Cyclic voltammetry(순환전압전류법), Electrochemically active specific area(전기화학적 활성비표면적) 한국수소 및 신에너지학회 논문집(2010. 12), 제21권 제6호Trans. of the Korean Hydrogen and New Energy Society(2010. 12), Vol. 21, No. 6, pp. 540~546 † Corresponding author : ycnam19@kims.re.kr