Communication—Cathodic Platinum Dissolution Studied Using a Channel Flow Double Electrode. Issue 5 (1st January 2016)

• Record Type: Journal Article
• Authors: Wang, Zhongqi; Tada, Eiji; Nishikata, Atsushi
• Is Part Of: Journal of the Electrochemical Society. Volume 163:Issue 5(2016)
• Page Start: F421
• Page End: F423
• Publication Date: 2016-01-01
• Subjects: CFDE -- PEFC durability -- Pt dissolution; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.1041605jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Cathodic platinum dissolution (CPD) was analyzed in 0.5 and 5 M H2 SO4 solutions at 25 and 65°C using a channel flow double electrode (CFDE). A polycrystalline Pt plate and a commercial carbon-supported Pt nanoparticles (Pt/C) were employed as the Pt working electrodes. An increase in temperature from 25 to 65°C resulted in substantial enhancement of CPD by 5 times. An increase in the concentration of the H2 SO4 solution also moderately enhanced the CPD. For the same Pt surface area, CPD from Pt/C was observed to be ca. 40% of that from the bulk plate.