Enhanced activity observed for sulfuric acid and chlorosulfuric acid functionalized carbon black as PtRu and PtSn electrocatalyst support for DMFC and DEFC applications

Marcelo Carmo, Michele Brandalise, Almir Oliveira Neto, Estevam V. Spinacé, Andre Taylor, Marcelo Linardi, João Guilherme Rocha Poo

Research output: Contribution to journalArticle

Abstract

In this study, carbon black Vulcan XC72 was successfully functionalized in an autoclave with sulfuric acid (SA) and Chlorosulfuric acid (C-SA). The functionalized carbons were then used as supports to prepare PtRu/C and PtSn/C electrocatalysts by an alcohol-reduction process. Physical characterization was performed by BET, LS, XRD, EDX, and TEM. The electrochemical characterization showed that the catalysts supported on functionalized carbons exhibited better performance for alcohol oxidation if compared to those using unfunctionalized supports. The observed better performance can be mainly attributed to the easier access with protons (higher ionic transport), better wettability (higher water uptake), and better distribution of the nanoparticles over the support (higher platinum utilization); indicating that sulfonation is an efficient approach to functionalize, improve performance, and reduce costs of fuel cell catalysts.

Original languageEnglish (US)
Pages (from-to)14659-14667
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number22
DOIs
StatePublished - Nov 1 2011

Fingerprint

Direct ethanol fuel cells (DEFC)
Direct methanol fuel cells (DMFC)
electrocatalysts
Electrocatalysts
sulfuric acid
Carbon black
Sulfuric acid
Catalyst supports
Alcohols
Sulfonation
acids
Carbon
Acids
carbon
Autoclaves
alcohols
Wetting
Fuel cells
Platinum
Energy dispersive spectroscopy

Keywords

  • Carbon black functionalization
  • Chlorosulfuric acid
  • Direct alcohol fuel cells
  • Direct ethanol fuel cell
  • Direct methanol fuel cell
  • Sulfuric acid

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Enhanced activity observed for sulfuric acid and chlorosulfuric acid functionalized carbon black as PtRu and PtSn electrocatalyst support for DMFC and DEFC applications. / Carmo, Marcelo; Brandalise, Michele; Neto, Almir Oliveira; Spinacé, Estevam V.; Taylor, Andre; Linardi, Marcelo; Rocha Poo, João Guilherme.

In: International Journal of Hydrogen Energy, Vol. 36, No. 22, 01.11.2011, p. 14659-14667.

Research output: Contribution to journalArticle

Carmo, Marcelo ; Brandalise, Michele ; Neto, Almir Oliveira ; Spinacé, Estevam V. ; Taylor, Andre ; Linardi, Marcelo ; Rocha Poo, João Guilherme. / Enhanced activity observed for sulfuric acid and chlorosulfuric acid functionalized carbon black as PtRu and PtSn electrocatalyst support for DMFC and DEFC applications. In: International Journal of Hydrogen Energy. 2011 ; Vol. 36, No. 22. pp. 14659-14667.
@article{2714eff7dc88449488efe170c95be3df,
title = "Enhanced activity observed for sulfuric acid and chlorosulfuric acid functionalized carbon black as PtRu and PtSn electrocatalyst support for DMFC and DEFC applications",
abstract = "In this study, carbon black Vulcan XC72 was successfully functionalized in an autoclave with sulfuric acid (SA) and Chlorosulfuric acid (C-SA). The functionalized carbons were then used as supports to prepare PtRu/C and PtSn/C electrocatalysts by an alcohol-reduction process. Physical characterization was performed by BET, LS, XRD, EDX, and TEM. The electrochemical characterization showed that the catalysts supported on functionalized carbons exhibited better performance for alcohol oxidation if compared to those using unfunctionalized supports. The observed better performance can be mainly attributed to the easier access with protons (higher ionic transport), better wettability (higher water uptake), and better distribution of the nanoparticles over the support (higher platinum utilization); indicating that sulfonation is an efficient approach to functionalize, improve performance, and reduce costs of fuel cell catalysts.",
keywords = "Carbon black functionalization, Chlorosulfuric acid, Direct alcohol fuel cells, Direct ethanol fuel cell, Direct methanol fuel cell, Sulfuric acid",
author = "Marcelo Carmo and Michele Brandalise and Neto, {Almir Oliveira} and Spinac{\'e}, {Estevam V.} and Andre Taylor and Marcelo Linardi and {Rocha Poo}, {Jo{\~a}o Guilherme}",
year = "2011",
month = "11",
day = "1",
doi = "10.1016/j.ijhydene.2011.08.031",
language = "English (US)",
volume = "36",
pages = "14659--14667",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "Elsevier Limited",
number = "22",

}

TY - JOUR

T1 - Enhanced activity observed for sulfuric acid and chlorosulfuric acid functionalized carbon black as PtRu and PtSn electrocatalyst support for DMFC and DEFC applications

AU - Carmo, Marcelo

AU - Brandalise, Michele

AU - Neto, Almir Oliveira

AU - Spinacé, Estevam V.

AU - Taylor, Andre

AU - Linardi, Marcelo

AU - Rocha Poo, João Guilherme

PY - 2011/11/1

Y1 - 2011/11/1

N2 - In this study, carbon black Vulcan XC72 was successfully functionalized in an autoclave with sulfuric acid (SA) and Chlorosulfuric acid (C-SA). The functionalized carbons were then used as supports to prepare PtRu/C and PtSn/C electrocatalysts by an alcohol-reduction process. Physical characterization was performed by BET, LS, XRD, EDX, and TEM. The electrochemical characterization showed that the catalysts supported on functionalized carbons exhibited better performance for alcohol oxidation if compared to those using unfunctionalized supports. The observed better performance can be mainly attributed to the easier access with protons (higher ionic transport), better wettability (higher water uptake), and better distribution of the nanoparticles over the support (higher platinum utilization); indicating that sulfonation is an efficient approach to functionalize, improve performance, and reduce costs of fuel cell catalysts.

AB - In this study, carbon black Vulcan XC72 was successfully functionalized in an autoclave with sulfuric acid (SA) and Chlorosulfuric acid (C-SA). The functionalized carbons were then used as supports to prepare PtRu/C and PtSn/C electrocatalysts by an alcohol-reduction process. Physical characterization was performed by BET, LS, XRD, EDX, and TEM. The electrochemical characterization showed that the catalysts supported on functionalized carbons exhibited better performance for alcohol oxidation if compared to those using unfunctionalized supports. The observed better performance can be mainly attributed to the easier access with protons (higher ionic transport), better wettability (higher water uptake), and better distribution of the nanoparticles over the support (higher platinum utilization); indicating that sulfonation is an efficient approach to functionalize, improve performance, and reduce costs of fuel cell catalysts.

KW - Carbon black functionalization

KW - Chlorosulfuric acid

KW - Direct alcohol fuel cells

KW - Direct ethanol fuel cell

KW - Direct methanol fuel cell

KW - Sulfuric acid

UR - http://www.scopus.com/inward/record.url?scp=80054011023&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80054011023&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2011.08.031

DO - 10.1016/j.ijhydene.2011.08.031

M3 - Article

AN - SCOPUS:80054011023

VL - 36

SP - 14659

EP - 14667

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 22

ER -