Oxygen transfer and storage processes inside the mesopores of platinum-deposited mesoporous carbon catalyst thin-layer electrode

Akari Hayashi; Kenichi Kimijima; Junichi Miyamoto; Ichizo Yagi

doi:10.1021/jp901298r

Oxygen transfer and storage processes inside the mesopores of platinum-deposited mesoporous carbon catalyst thin-layer electrode

Akari Hayashi, Kenichi Kimijima, Junichi Miyamoto, Ichizo Yagi

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Platinum-deposited mesoporous carbon (Pt/MC) catalyst has revealed an interesting response toward oxygen reduction. Its thin-layer rotating disk electrode (RDE) has shown characteristic oxygen reduction current that does not depend on oxygen diffusion through the electrolyte solution, while Pt-deposited carbon black (Pt/ CB) thin-layer RDE shows diffusion-limited current. This is due to unique oxygen transfer and storage occurring within the 7-8 nm sized mesopores of MC support, which do not exist in CB support. With a Pt/MC thin-layer electrode, mesopores can produce an ionomer-filled channel connecting catalysts and external environment and favorably transferring oxygen. Also, even after oxygen inside the pores is used up, oxygen can be restored during the potential cycling.

Original language	English
Pages (from-to)	12149-12153
Number of pages	5
Journal	Journal of Physical Chemistry C
Volume	113
Issue number	28
DOIs	https://doi.org/10.1021/jp901298r
Publication status	Published - Jul 16 2009
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

Access to Document

10.1021/jp901298r

Cite this

@article{a5c267488b1247bb8102e75df2f20ec5,

title = "Oxygen transfer and storage processes inside the mesopores of platinum-deposited mesoporous carbon catalyst thin-layer electrode",

abstract = "Platinum-deposited mesoporous carbon (Pt/MC) catalyst has revealed an interesting response toward oxygen reduction. Its thin-layer rotating disk electrode (RDE) has shown characteristic oxygen reduction current that does not depend on oxygen diffusion through the electrolyte solution, while Pt-deposited carbon black (Pt/ CB) thin-layer RDE shows diffusion-limited current. This is due to unique oxygen transfer and storage occurring within the 7-8 nm sized mesopores of MC support, which do not exist in CB support. With a Pt/MC thin-layer electrode, mesopores can produce an ionomer-filled channel connecting catalysts and external environment and favorably transferring oxygen. Also, even after oxygen inside the pores is used up, oxygen can be restored during the potential cycling.",

author = "Akari Hayashi and Kenichi Kimijima and Junichi Miyamoto and Ichizo Yagi",

year = "2009",

month = jul,

day = "16",

doi = "10.1021/jp901298r",

language = "English",

volume = "113",

pages = "12149--12153",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

number = "28",

}

TY - JOUR

T1 - Oxygen transfer and storage processes inside the mesopores of platinum-deposited mesoporous carbon catalyst thin-layer electrode

AU - Hayashi, Akari

AU - Kimijima, Kenichi

AU - Miyamoto, Junichi

AU - Yagi, Ichizo

PY - 2009/7/16

Y1 - 2009/7/16

N2 - Platinum-deposited mesoporous carbon (Pt/MC) catalyst has revealed an interesting response toward oxygen reduction. Its thin-layer rotating disk electrode (RDE) has shown characteristic oxygen reduction current that does not depend on oxygen diffusion through the electrolyte solution, while Pt-deposited carbon black (Pt/ CB) thin-layer RDE shows diffusion-limited current. This is due to unique oxygen transfer and storage occurring within the 7-8 nm sized mesopores of MC support, which do not exist in CB support. With a Pt/MC thin-layer electrode, mesopores can produce an ionomer-filled channel connecting catalysts and external environment and favorably transferring oxygen. Also, even after oxygen inside the pores is used up, oxygen can be restored during the potential cycling.

AB - Platinum-deposited mesoporous carbon (Pt/MC) catalyst has revealed an interesting response toward oxygen reduction. Its thin-layer rotating disk electrode (RDE) has shown characteristic oxygen reduction current that does not depend on oxygen diffusion through the electrolyte solution, while Pt-deposited carbon black (Pt/ CB) thin-layer RDE shows diffusion-limited current. This is due to unique oxygen transfer and storage occurring within the 7-8 nm sized mesopores of MC support, which do not exist in CB support. With a Pt/MC thin-layer electrode, mesopores can produce an ionomer-filled channel connecting catalysts and external environment and favorably transferring oxygen. Also, even after oxygen inside the pores is used up, oxygen can be restored during the potential cycling.

UR - http://www.scopus.com/inward/record.url?scp=68149175306&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=68149175306&partnerID=8YFLogxK

U2 - 10.1021/jp901298r

DO - 10.1021/jp901298r

M3 - Article

AN - SCOPUS:68149175306

SN - 1932-7447

VL - 113

SP - 12149

EP - 12153

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 28

ER -

Oxygen transfer and storage processes inside the mesopores of platinum-deposited mesoporous carbon catalyst thin-layer electrode

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this