Polypyrrole-modified hydrophobic carbon nanotubes as promising electrocatalyst supports in polymer electrolyte membrane fuel cells

Hyung Suk Oh, Kwanghyun Kim, Hansung Kim

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

As an alternative to oxidative acid treatment, a hydrophobic graphitized carbon nanotube (CNT) was functionalized with 1-4 nm thick polypyrrole (PPy) prior to application as catalyst supports in polymer electrolyte membrane (PEM) fuel cells. Unlike oxidative acid treatment, the PPy coating method converts the hydrophobic surface of a CNT to a hydrophilic one without creating defects on the surface of the CNT. As a result, Pt nanoparticles deposited on the PPy-coated CNTs showed an improved distribution, which significantly enhanced the fuel cell performance while preserving the intrinsic properties of the CNTs, i.e., resistance to electrochemical carbon corrosion. An additional advantage of PPy coating is that it prevents Pt nanoparticles from agglomerating on the CNT surface. These results indicated that PPy-coated CNTs are a promising catalyst support to improve both the performance and durability of PEM fuel cells.

Original languageEnglish
Pages (from-to)11564-11571
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number18
DOIs
Publication statusPublished - 2011 Sep 1

Fingerprint

electrocatalysts
Electrocatalysts
polypyrroles
Polypyrroles
Proton exchange membrane fuel cells (PEMFC)
Catalyst supports
fuel cells
Carbon nanotubes
carbon nanotubes
electrolytes
membranes
polymers
Nanoparticles
Coatings
Acids
catalysts
nanoparticles
acids
Fuel cells
Durability

All Science Journal Classification (ASJC) codes

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

Cite this

@article{f1537f0a279346cab4cd3f4d2be3f4ba,
title = "Polypyrrole-modified hydrophobic carbon nanotubes as promising electrocatalyst supports in polymer electrolyte membrane fuel cells",
abstract = "As an alternative to oxidative acid treatment, a hydrophobic graphitized carbon nanotube (CNT) was functionalized with 1-4 nm thick polypyrrole (PPy) prior to application as catalyst supports in polymer electrolyte membrane (PEM) fuel cells. Unlike oxidative acid treatment, the PPy coating method converts the hydrophobic surface of a CNT to a hydrophilic one without creating defects on the surface of the CNT. As a result, Pt nanoparticles deposited on the PPy-coated CNTs showed an improved distribution, which significantly enhanced the fuel cell performance while preserving the intrinsic properties of the CNTs, i.e., resistance to electrochemical carbon corrosion. An additional advantage of PPy coating is that it prevents Pt nanoparticles from agglomerating on the CNT surface. These results indicated that PPy-coated CNTs are a promising catalyst support to improve both the performance and durability of PEM fuel cells.",
author = "Oh, {Hyung Suk} and Kwanghyun Kim and Hansung Kim",
year = "2011",
month = "9",
day = "1",
doi = "10.1016/j.ijhydene.2011.06.079",
language = "English",
volume = "36",
pages = "11564--11571",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "Elsevier Limited",
number = "18",

}

Polypyrrole-modified hydrophobic carbon nanotubes as promising electrocatalyst supports in polymer electrolyte membrane fuel cells. / Oh, Hyung Suk; Kim, Kwanghyun; Kim, Hansung.

In: International Journal of Hydrogen Energy, Vol. 36, No. 18, 01.09.2011, p. 11564-11571.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Polypyrrole-modified hydrophobic carbon nanotubes as promising electrocatalyst supports in polymer electrolyte membrane fuel cells

AU - Oh, Hyung Suk

AU - Kim, Kwanghyun

AU - Kim, Hansung

PY - 2011/9/1

Y1 - 2011/9/1

N2 - As an alternative to oxidative acid treatment, a hydrophobic graphitized carbon nanotube (CNT) was functionalized with 1-4 nm thick polypyrrole (PPy) prior to application as catalyst supports in polymer electrolyte membrane (PEM) fuel cells. Unlike oxidative acid treatment, the PPy coating method converts the hydrophobic surface of a CNT to a hydrophilic one without creating defects on the surface of the CNT. As a result, Pt nanoparticles deposited on the PPy-coated CNTs showed an improved distribution, which significantly enhanced the fuel cell performance while preserving the intrinsic properties of the CNTs, i.e., resistance to electrochemical carbon corrosion. An additional advantage of PPy coating is that it prevents Pt nanoparticles from agglomerating on the CNT surface. These results indicated that PPy-coated CNTs are a promising catalyst support to improve both the performance and durability of PEM fuel cells.

AB - As an alternative to oxidative acid treatment, a hydrophobic graphitized carbon nanotube (CNT) was functionalized with 1-4 nm thick polypyrrole (PPy) prior to application as catalyst supports in polymer electrolyte membrane (PEM) fuel cells. Unlike oxidative acid treatment, the PPy coating method converts the hydrophobic surface of a CNT to a hydrophilic one without creating defects on the surface of the CNT. As a result, Pt nanoparticles deposited on the PPy-coated CNTs showed an improved distribution, which significantly enhanced the fuel cell performance while preserving the intrinsic properties of the CNTs, i.e., resistance to electrochemical carbon corrosion. An additional advantage of PPy coating is that it prevents Pt nanoparticles from agglomerating on the CNT surface. These results indicated that PPy-coated CNTs are a promising catalyst support to improve both the performance and durability of PEM fuel cells.

UR - http://www.scopus.com/inward/record.url?scp=80052141594&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80052141594&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2011.06.079

DO - 10.1016/j.ijhydene.2011.06.079

M3 - Article

AN - SCOPUS:80052141594

VL - 36

SP - 11564

EP - 11571

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 18

ER -