Effect of continuously changing loaded potential on the electrochemical characteristic of DMFC anode

Autor:	Wan Li, Chenghao Liang, M. Sun, S. Zhan, Nai Bao Huang, L.S. Xu
Rok vydání:	2015
Předmět:	Materials science Mechanical Engineering Double-layer capacitance Analytical chemistry Condensed Matter Physics Electrochemistry Redox Dielectric spectroscopy Anode Direct methanol fuel cell Chemical engineering Mechanics of Materials Potential change General Materials Science Cyclic voltammetry
Zdroj:	Materials Research Innovations. 19:S6-30
ISSN:	1433-075X 1432-8917
DOI:	10.1179/1432891715z.0000000001440
Popis:	To evaluate the effect of loading potential change on direct methanol fuel cell, the performance of direct methanol fuel cell anode was studied at continuously changing loaded potential by electrochemical methods. The results indicated, when loading potential changed from 0·2 to 0·8 V, the forward and the reverse sweep current peaks first moved to negative and then shifted to positive. Double layer capacitance increased gradually while transfer resistance first increased and then decrease. The ratio of Pt/Ru changed from 1·10 to 1·70 after continuously changed loaded potential from 0·2 to 0·8 V. Continuously changing loaded potential varied the non-equilibrium process of the redox of Ru and accelerated its loss, which resulted in the change of its electrochemical performance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e2e632fdcc7c5f9ae56c5ec857e54d5f https://doi.org/10.1179/1432891715z.0000000001440 Zobrazit plný text záznamu