Lee, JH Won, J Oh, IH Ha, HY Cho, EA Kang, YS 2024-01-21T03:39:36Z 2024-01-21T03:39:36Z 2021-09-02 2006-02 1598-5032 https://pubs.kist.re.kr/handle/201004/135786 The transport of reactant gas, electrons and protons at the three phase interfaces in the catalytic layers of membrane electrode assemblies (MEAs) in proton exchange, membrane fuel cells (PEMFCs) must be optimized to provide efficient transport to and from the electrochemical reactions in the solid polymer electrolyte. The aim of reducing proton transport loss in the catalytic layer by increasing the volume of the conducting medium can be achieved by filling the voids in the layer with small-sized electrolytes, Such as dendrimers. Generation 1.5 and 3.5 polyamidoamine (PAMAM) dendrimer electrolytes are well-controlled, nanometer-sized materials with many peripheral ionic exchange, -COOH groups and were used for this purpose in this study. The electrochemically active surface area of the deposited catalyst material was also investigated using cyclic voltammetry, and by analyzing the Pt-H oxidation peak. The performances of the fuel cells with added PAMAM dendrimers were found to be comparable to that of a fuel cell using MEA, although the Pt utilization was reduced by the adsorption of the dendrimers to the catalytic layer. English POLYMER SOC KOREA LOADING ELECTRODES PLATINUM TECHNOLOGY Effects of polyamidoamine dendrimers on the catalytic layers of a membrane electrode assembly in fuel cells Article 10.1007/BF03219075 1 MACROMOLECULAR RESEARCH, v.14, no.1, pp.101 - 106 MACROMOLECULAR RESEARCH 14 1 101 106 scie scopus kci ART001097610 000235821200012 2-s2.0-33644818552 Polymer Science Polymer Science Article LOADING ELECTRODES PLATINUM TECHNOLOGY PAMAM dendrimer MEA fuel cell catalytic layer