Electrochemical synthesis of Au-Ni(OH)2-nanocomposite on glassy carbon electrode as highly active bifunctional electrocatalyst for oxygen evolution and oxygen reduction reactions
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
Electrochemical synthesis of Au-Ni(OH)2-nanocomposite on glassy carbon electrode as highly active bifunctional electrocatalyst for oxygen evolution and oxygen reduction reactions
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| Creator |
Kanagavalli, P.
Sudha, R. Boopathi, S. Senthil Kumar, S. |
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| Subject |
Electrodics and Electrocatalysis
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| Description |
In this work, we demonstrated an electrochemical method to prepare Au-Ni(OH)2-nanocomposite on a glassy
carbon substrate (Au-Ni(OH)2-NC/GCE). This modified nanocomposite showed high electrocatalytic activity
towards oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) compared to similarly prepared
Au free Ni(OH)2-NC/GCE. The above nanocomposite was prepared through two step processes; first gold‑nickel
hexacyanoferrate nanocomposite film on GCE (Au-NiHCF-NC/GCE) was synthesized by single step electrochemical cycling approach. Later, the Au-NiHCF-NC/GCE was treated electrochemically in alkaline solution to
produce Au-Ni(OH)2-NC/GCE. The as-formed Au-Ni(OH)2-NC/GCE was used as a bifunctional electrode to study
the OER and ORR in alkaline solution. The resulting nanocomposite exhibits high electrocatalytic activity and
fast electron transfer kinetics due to the synergic effect of the formation of more active β-Ni(OH)2 phase and Au nanoparticles (AuNPs) during the electrochemical cycling process.
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| Publisher |
Elsevier B.V.
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| Date |
2017-07-27
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/3221/1/055-2017.pdf
Kanagavalli, P. and Sudha, R. and Boopathi, S. and Senthil Kumar, S. (2017) Electrochemical synthesis of Au-Ni(OH)2-nanocomposite on glassy carbon electrode as highly active bifunctional electrocatalyst for oxygen evolution and oxygen reduction reactions. Electrochemistry Communications, 82. pp. 61-65. ISSN 1388-2481 |
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| Relation |
http://www.elsevier.com/locate/elecom
http://cecri.csircentral.net/3221/ |
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