naa a22 4500 510819583 CHVBK 20180411083524.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11814-013-0071-2 doi (NATIONALLICENCE)springer-10.1007/s11814-013-0071-2 Performance improvement of direct methanol fuel cells via anodic treatment using various organic acids [Elektronische Daten] [Min Jeon, Ki Lee, Seong Woo] Performance improvement of direct methanol fuel cells (DMFCs) was achieved via an anodic treatment technique. Previously, anodic treatment was performed using sulfuric acid as acidic media, but various organic acids including formic, acetic, oxalic, and citric acids were employed in this study to avoid the use of toxic sulfuric acid. By replacing sulfuric acid to organic acids, a potential damage to catalyst layers and other components such as polymer electrolyte membrane and bipolar plates are expected to be minimized. The anodic treatment was performed by applying 0.7 V (vs. reversible hydrogen electrode) at the anode of DMFCs flowing the organic acid solutions for 30min. After the anodic treatment, peak power densities of DMFCs were increased by +7, +32, +23, and −2.6% when formic, acetic, oxalic, and citric acid solutions were employed, respectively. The enhanced catalytic activity of the DMFCs in the acetic and oxalic acid solutions was confirmed by analyzing electrochemical impedance spectroscopy data. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Direct Methanol Fuel Cell nationallicence Methanol Electro-oxidation nationallicence Electrocatalyst nationallicence Electrochemical Impedance Spectroscopy nationallicence PtRu nationallicence Jeon Min Department of Chemical and Biomolecular Engineering and Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology, 305-701, Daejeon, Korea aut Lee Ki Department of Chemical and Biomolecular Engineering and Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology, 305-701, Daejeon, Korea aut Woo Seong Department of Chemical and Biomolecular Engineering and Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology, 305-701, Daejeon, Korea aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/7(2013-07-01), 1410-1414 0256-1115 30:7<1410 2013 30 11814 https://doi.org/10.1007/s11814-013-0071-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0071-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jeon Min Department of Chemical and Biomolecular Engineering and Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology, 305-701, Daejeon, Korea aut NATIONALLICENCE 700 1- Lee Ki Department of Chemical and Biomolecular Engineering and Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology, 305-701, Daejeon, Korea aut NATIONALLICENCE 700 1- Woo Seong Department of Chemical and Biomolecular Engineering and Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology, 305-701, Daejeon, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/7(2013-07-01), 1410-1414 0256-1115 30:7<1410 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer