Linear sweep voltametry studies on oxygen reduction of some oxides in alkaline electrolytes
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Linear sweep voltametry studies on oxygen reduction
of some oxides in alkaline electrolytes
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| Creator |
Ananth, M.V.
Giridhar, V.V. Renuga, K. |
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| Subject |
Electrodics and Electrocatalysis
Electrochemical Power Sources |
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| Description |
The study uses linear sweep voltametry (LSV) to observe the efficiency of oxygen reduction
on some oxides and their mixtures in 6 M KOH at 25 �C. The investigated materials are
Ag2O, MnO2, Sm2O3, Dy2O3 and NdO2. The electrocatalytic oxygen reduction reactions (ORR)
on Teflon-bonded, oxide þ graphite electrodes are studied. The oxygen reduction potentials
for electrodes containing these materials as catalyst are seen as �60.67, �270.31, �111,
�159.58 and �130.24 mV, respectively. Mixture combinations of these oxides give a higher
ORR peak current thereby showing evidence of synergetic effect. Air–MH cells using some
of the above investigated oxides as catalyst for air electrode are constructed and studied.
Best performance is obtained with silver oxide. The LSV findings are in accordance with
air–MH cell charge/discharge experiments and for best performance prefer shift of the ORR
onset potential to more positive positions.
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| Publisher |
Elsevier Ltd.
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| Date |
2008
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/188/1/064-2008.pdf
Ananth, M.V. and Giridhar, V.V. and Renuga, K. (2008) Linear sweep voltametry studies on oxygen reduction of some oxides in alkaline electrolytes. International Journal of Hydrogen Energy , 33 (20). pp. 5779-5788. ISSN 0360-3199 |
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| Relation |
http://cecri.csircentral.net/188/
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