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Electrocatalytic oxidation of meso-erythritol in anion-exchange membrane alkaline fuel cell on PdAg/CNT catalyst

TitleElectrocatalytic oxidation of meso-erythritol in anion-exchange membrane alkaline fuel cell on PdAg/CNT catalyst
Publication TypeJournal Article
Year of Publication2018
AuthorsBenipal, N, Qi, J, McSweeney, RE, Liang, CH, Li, WZ
JournalJournal of Power Sources
Volume375
Pagination345-350
Date Published02
Type of ArticleArticle
ISBN Number0378-7753
Accession NumberWOS:000418463700036
Keywordsacid, alcohol oxidation, Anion-exchange membrane, anode catalysts, au catalysts, Biomass renewables, chemistry, electricity, electrocatalysis, Electrochemistry, electrooxidation, ethylene-glycol, Fuel cell, fuels, glycerol, Materials Science, Meso-erythritol oxidation, Pd, PdAg nanoparticles, selective oxidation
Abstract

C-C bond cleavage during electrocatalytic oxidation of glycerol and C3+ polyols often occurs and can significantly affect the Faradaic efficiency, fuel utilization, and output power density of a direct polyol fuel cell, although this has not been deeply investigated. With the goal of acquiring new knowledge of C-C bond breaking of polyols, this study examines the electrocatalytic oxidation of a C-4 polyol mesoerythritol on carbon nanotube supported Pd-based catalysts (Pd/CNT, PdAg/CNT, and PdAg3/CNT) in an anion-exchange membrane fuel cell (AEMFC). Our results show that PdAg/CNT improves the fuel efficiency of meso-erythritol oxidation by contributing to the C-C bond cleavage of meso-erythritol in C3 and C2 chemicals. Based on the analysis of electro-oxidation products and half-cell cyclic voltammetry (CV) of intermediates, a meso-erythritol electro-oxidation pathway has been proposed to demonstrate that Ag is likely to assist Pd to promote the cleavage of C-C bonds of meso-erythritol. (C) 2017 Elsevier B.V. All rights reserved.

DOI10.1016/j.jpowsour.2017.06.082
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