Nanostructured hybrid electrocatalysts for degradation mitigation in PEFCs

Panagiotis Trogadas; Vijay Ramani

Nanostructured hybrid electrocatalysts for degradation mitigation in PEFCs

Panagiotis Trogadas
, Vijay Ramani

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

C/γ MnO2 and Pt/C-γ MnO2 composite materials were prepared by a wet chemical method. The presence of γ-MnO2 was confirmed by X-ray diffraction (XRD) and Fourier Transport Infrared Spectroscopy (FTIR) methods. Rotating ring-disk electrode (RRDE) experiments were performed to estimate the amount of hydrogen peroxide (H2O2) formed during the oxygen reduction reaction (ORR) using these materials as catalysts. For the Pt/C it was found that as the wt% MnO2 increases, the % H2O2 production first decreases and then begins to increase. Pt/C-MnO2 1-5 wt% produces less H2O2 than unmodified Pt/C and specifically Pt/C- MnO2 1 wt% has the smallest production (20% of the peroxide produced by Pt/C). The hybrid catalysts thus prepared are promising materials for degradation mitigation in PEFCs.

Original language	English
Title of host publication	234th ACS National Meeting, Abstracts of Scientific Papers
State	Published - 2007
Event	234th ACS National Meeting - Boston, MA, United States Duration: Aug 19 2007 → Aug 23 2007

Publication series

Name	ACS National Meeting Book of Abstracts
ISSN (Print)	0065-7727

Conference

Conference	234th ACS National Meeting
Country/Territory	United States
City	Boston, MA
Period	08/19/07 → 08/23/07

Cite this

@inproceedings{3554fc74f5974cc6817240b6b1787698,

title = "Nanostructured hybrid electrocatalysts for degradation mitigation in PEFCs",

abstract = "C/γ MnO2 and Pt/C-γ MnO2 composite materials were prepared by a wet chemical method. The presence of γ-MnO2 was confirmed by X-ray diffraction (XRD) and Fourier Transport Infrared Spectroscopy (FTIR) methods. Rotating ring-disk electrode (RRDE) experiments were performed to estimate the amount of hydrogen peroxide (H2O2) formed during the oxygen reduction reaction (ORR) using these materials as catalysts. For the Pt/C it was found that as the wt\% MnO2 increases, the \% H2O2 production first decreases and then begins to increase. Pt/C-MnO2 1-5 wt\% produces less H2O2 than unmodified Pt/C and specifically Pt/C- MnO2 1 wt\% has the smallest production (20\% of the peroxide produced by Pt/C). The hybrid catalysts thus prepared are promising materials for degradation mitigation in PEFCs.",

author = "Panagiotis Trogadas and Vijay Ramani",

year = "2007",

language = "English",

isbn = "0841269556",

series = "ACS National Meeting Book of Abstracts",

booktitle = "234th ACS National Meeting, Abstracts of Scientific Papers",

note = "234th ACS National Meeting ; Conference date: 19-08-2007 Through 23-08-2007",

}

TY - GEN

T1 - Nanostructured hybrid electrocatalysts for degradation mitigation in PEFCs

AU - Trogadas, Panagiotis

AU - Ramani, Vijay

PY - 2007

Y1 - 2007

N2 - C/γ MnO2 and Pt/C-γ MnO2 composite materials were prepared by a wet chemical method. The presence of γ-MnO2 was confirmed by X-ray diffraction (XRD) and Fourier Transport Infrared Spectroscopy (FTIR) methods. Rotating ring-disk electrode (RRDE) experiments were performed to estimate the amount of hydrogen peroxide (H2O2) formed during the oxygen reduction reaction (ORR) using these materials as catalysts. For the Pt/C it was found that as the wt% MnO2 increases, the % H2O2 production first decreases and then begins to increase. Pt/C-MnO2 1-5 wt% produces less H2O2 than unmodified Pt/C and specifically Pt/C- MnO2 1 wt% has the smallest production (20% of the peroxide produced by Pt/C). The hybrid catalysts thus prepared are promising materials for degradation mitigation in PEFCs.

AB - C/γ MnO2 and Pt/C-γ MnO2 composite materials were prepared by a wet chemical method. The presence of γ-MnO2 was confirmed by X-ray diffraction (XRD) and Fourier Transport Infrared Spectroscopy (FTIR) methods. Rotating ring-disk electrode (RRDE) experiments were performed to estimate the amount of hydrogen peroxide (H2O2) formed during the oxygen reduction reaction (ORR) using these materials as catalysts. For the Pt/C it was found that as the wt% MnO2 increases, the % H2O2 production first decreases and then begins to increase. Pt/C-MnO2 1-5 wt% produces less H2O2 than unmodified Pt/C and specifically Pt/C- MnO2 1 wt% has the smallest production (20% of the peroxide produced by Pt/C). The hybrid catalysts thus prepared are promising materials for degradation mitigation in PEFCs.

UR - https://www.scopus.com/pages/publications/37349077007

M3 - Conference contribution

AN - SCOPUS:37349077007

SN - 0841269556

SN - 9780841269552

T3 - ACS National Meeting Book of Abstracts

BT - 234th ACS National Meeting, Abstracts of Scientific Papers

T2 - 234th ACS National Meeting

Y2 - 19 August 2007 through 23 August 2007

ER -

Nanostructured hybrid electrocatalysts for degradation mitigation in PEFCs

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