Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Preparation of PtRu/C Electrocatalysts Using Citric Acid as Reducing Agent and OH- ions as Stabilizing Agent for Direct Alcohol Fuel Cell (DAFC)

Full text
Author(s):
Neto, A. O. [1] ; Verjulio-Silva, R. W. R. [1] ; Linardi, M. [1] ; Spinace, E. V. [1]
Total Authors: 4
Affiliation:
[1] IPEN CNEN SP, BR-05508000 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: International Journal of Electrochemical Science; v. 4, n. 7, p. 954-961, JUL 2009.
Web of Science Citations: 40
Abstract

PtRu/C electrocatalysts (Pt: Ru atomic ratio of 50: 50 and 80: 20) were prepared using citric acid as reducing agent and OH(-) ions as stabilizing agent. The obtained electrocatalysts were characterized by energy dispersive X-ray analysis and transmission electron microscopy. The electro-oxidation of methanol and ethanol were studied at room temperature by chronoamperometry. Studies on the Direct Methanol Fuel Cell (DMFC) and Direct Ethanol Fuel Cell (DEFC) were carried at 90 degrees C. For both electrocatalysts the obtained Pt: Ru atomic ratios were similar to the nominal ones and the average particles sizes were around 2.5 nm. The chronoamperometry and DAFC experiments showed that the electrocatalyst prepared with Pt: Ru atomic ratio of 80:20 has a superior performance for methanol oxidation, while the electrocatalyst prepared with Pt: Ru atomic ratio of 50:50 has a superior performance for ethanol oxidation. (AU)

FAPESP's process: 07/07898-1 - Preparation and characterization of PtRu/C + rare earth, PtSn/C + Rare earth electrocatalysts for direct ethanol fuel cell
Grantee:Almir Oliveira Neto
Support Opportunities: Regular Research Grants