Effect of counter cations on electrocatalytic activity of oxide pyrochlores towards oxygen reduction/evolution in alkaline medium: an electrochemical and spectroscopic study

A. K. Shukla; A. M. Kannan; M. S. Hegde; J. Gopalakrishnan

doi:10.1016/0378-7753(91)80033-T

Effect of counter cations on electrocatalytic activity of oxide pyrochlores towards oxygen reduction/evolution in alkaline medium: an electrochemical and spectroscopic study

A. K. Shukla, A. M. Kannan, M. S. Hegde, J. Gopalakrishnan

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

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Abstract

A systematic electrochemical and spectroscopic study is conducted to examine the effect of counter cations on the electrocatalytic activities of oxide pyrochlores towards oxygen reduction and evolution reactions in alkaline medium. The study suggests that among the family of oxide pyrochlores, Pb₂Ir₂O_7-y and PbBiRu₂O_7-y are efficient and stable bifunctional oxygen catalysts. An analysis of the X-ray photoelectron spectra of the oxide pyrochlores supports the postulated pathways for the oxygen reactions.

Original language	English (US)
Pages (from-to)	163-173
Number of pages	11
Journal	Journal of Power Sources
Volume	35
Issue number	2
DOIs	https://doi.org/10.1016/0378-7753(91)80033-T
State	Published - Jul 1991
Externally published	Yes

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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10.1016/0378-7753(91)80033-T

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@article{13968cf7a48a4487b826b04c9a1970ac,

title = "Effect of counter cations on electrocatalytic activity of oxide pyrochlores towards oxygen reduction/evolution in alkaline medium: an electrochemical and spectroscopic study",

abstract = "A systematic electrochemical and spectroscopic study is conducted to examine the effect of counter cations on the electrocatalytic activities of oxide pyrochlores towards oxygen reduction and evolution reactions in alkaline medium. The study suggests that among the family of oxide pyrochlores, Pb2Ir2O7-y and PbBiRu2O7-y are efficient and stable bifunctional oxygen catalysts. An analysis of the X-ray photoelectron spectra of the oxide pyrochlores supports the postulated pathways for the oxygen reactions.",

author = "Shukla, {A. K.} and Kannan, {A. M.} and Hegde, {M. S.} and J. Gopalakrishnan",

note = "Funding Information: The authors are indebted to Professor S. Sathyanarayana and Professor C. N. R. Rao for their kind encouragement, and to Dr G. Sankar for assistance in obtaining XANES data. Thanks are also due to Professor J. B. Goodenough for valuable comments. AKS is grateful to the Department of Non-Conventional Energy Sources, Government of India, New Delhi, for supporting this research. AMK thanks the Council of Scientific and Industrial Research, New Delhi, for a Senior Research Fellowship.",

year = "1991",

month = jul,

doi = "10.1016/0378-7753(91)80033-T",

language = "English (US)",

volume = "35",

pages = "163--173",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier",

number = "2",

}

TY - JOUR

T1 - Effect of counter cations on electrocatalytic activity of oxide pyrochlores towards oxygen reduction/evolution in alkaline medium

T2 - an electrochemical and spectroscopic study

AU - Shukla, A. K.

AU - Kannan, A. M.

AU - Hegde, M. S.

AU - Gopalakrishnan, J.

N1 - Funding Information: The authors are indebted to Professor S. Sathyanarayana and Professor C. N. R. Rao for their kind encouragement, and to Dr G. Sankar for assistance in obtaining XANES data. Thanks are also due to Professor J. B. Goodenough for valuable comments. AKS is grateful to the Department of Non-Conventional Energy Sources, Government of India, New Delhi, for supporting this research. AMK thanks the Council of Scientific and Industrial Research, New Delhi, for a Senior Research Fellowship.

PY - 1991/7

Y1 - 1991/7

N2 - A systematic electrochemical and spectroscopic study is conducted to examine the effect of counter cations on the electrocatalytic activities of oxide pyrochlores towards oxygen reduction and evolution reactions in alkaline medium. The study suggests that among the family of oxide pyrochlores, Pb2Ir2O7-y and PbBiRu2O7-y are efficient and stable bifunctional oxygen catalysts. An analysis of the X-ray photoelectron spectra of the oxide pyrochlores supports the postulated pathways for the oxygen reactions.

AB - A systematic electrochemical and spectroscopic study is conducted to examine the effect of counter cations on the electrocatalytic activities of oxide pyrochlores towards oxygen reduction and evolution reactions in alkaline medium. The study suggests that among the family of oxide pyrochlores, Pb2Ir2O7-y and PbBiRu2O7-y are efficient and stable bifunctional oxygen catalysts. An analysis of the X-ray photoelectron spectra of the oxide pyrochlores supports the postulated pathways for the oxygen reactions.

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U2 - 10.1016/0378-7753(91)80033-T

DO - 10.1016/0378-7753(91)80033-T

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SN - 0378-7753

VL - 35

SP - 163

EP - 173

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 2

ER -

Effect of counter cations on electrocatalytic activity of oxide pyrochlores towards oxygen reduction/evolution in alkaline medium: an electrochemical and spectroscopic study

Abstract

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