Enhanced electroactivity for the oxygen reduction on Ni@Pt core-shell nanocatalysts

F. Godínez-Salomón, M. Hallen-López, O. Solorza-Feria

Research output: Contribution to conferencePaper

54 Citations (Scopus)

Abstract

The synthesis of nickel decorated platinum core-shell nanocatalyst for the oxygen reduction reaction (ORR) in acid media is presented. The nanocatalysts prepared through colloidal reduction of NiCl 2 with NaBH 4 produce Ni core and subsequent reduction of H 2PtCl 6 enables the core-shell structure. Heat-treatment of as-prepared Ni@Pt in hydrogen atmosphere causes change in surface structure due to strong segregation of remaining Ni particle on topmost layer of Ni@Pt alloy, while performing different cycle in cyclic voltammetry remove the top layer of Ni particle; additionally a markedly Ni@Pt stabilization favor the enhanced electrocatalytic activity toward ORR. Ni@Pt core-shell structure was physical characterized using XRD, SEM and TEM techniques. Results indicate average particles of about 7.5 nm in size. Cyclic voltammetry on thin-film rotating disk electrode reveals that Ni@Pt nanoparticles, before and after thermal treatment, have more than twice enhanced catalytic activity than Pt nanoparticles synthesized by the same way. © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Original languageAmerican English
Pages14902-14910
Number of pages13410
DOIs
StatePublished - 1 Oct 2012
Externally publishedYes
EventInternational Journal of Hydrogen Energy -
Duration: 1 Jan 2014 → …

Conference

ConferenceInternational Journal of Hydrogen Energy
Period1/01/14 → …

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Nanoparticles
Hydrogen
Hot Temperature
Oxygen
Platinum
Nickel
Atmosphere
Publications
Electrodes
Acids

Cite this

Godínez-Salomón, F., Hallen-López, M., & Solorza-Feria, O. (2012). Enhanced electroactivity for the oxygen reduction on Ni@Pt core-shell nanocatalysts. 14902-14910. Paper presented at International Journal of Hydrogen Energy, . https://doi.org/10.1016/j.ijhydene.2012.01.157
Godínez-Salomón, F. ; Hallen-López, M. ; Solorza-Feria, O. / Enhanced electroactivity for the oxygen reduction on Ni@Pt core-shell nanocatalysts. Paper presented at International Journal of Hydrogen Energy, .13410 p.
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abstract = "The synthesis of nickel decorated platinum core-shell nanocatalyst for the oxygen reduction reaction (ORR) in acid media is presented. The nanocatalysts prepared through colloidal reduction of NiCl 2 with NaBH 4 produce Ni core and subsequent reduction of H 2PtCl 6 enables the core-shell structure. Heat-treatment of as-prepared Ni@Pt in hydrogen atmosphere causes change in surface structure due to strong segregation of remaining Ni particle on topmost layer of Ni@Pt alloy, while performing different cycle in cyclic voltammetry remove the top layer of Ni particle; additionally a markedly Ni@Pt stabilization favor the enhanced electrocatalytic activity toward ORR. Ni@Pt core-shell structure was physical characterized using XRD, SEM and TEM techniques. Results indicate average particles of about 7.5 nm in size. Cyclic voltammetry on thin-film rotating disk electrode reveals that Ni@Pt nanoparticles, before and after thermal treatment, have more than twice enhanced catalytic activity than Pt nanoparticles synthesized by the same way. {\circledC} 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
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Godínez-Salomón, F, Hallen-López, M & Solorza-Feria, O 2012, 'Enhanced electroactivity for the oxygen reduction on Ni@Pt core-shell nanocatalysts', Paper presented at International Journal of Hydrogen Energy, 1/01/14 pp. 14902-14910. https://doi.org/10.1016/j.ijhydene.2012.01.157

Enhanced electroactivity for the oxygen reduction on Ni@Pt core-shell nanocatalysts. / Godínez-Salomón, F.; Hallen-López, M.; Solorza-Feria, O.

2012. 14902-14910 Paper presented at International Journal of Hydrogen Energy, .

Research output: Contribution to conferencePaper

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N2 - The synthesis of nickel decorated platinum core-shell nanocatalyst for the oxygen reduction reaction (ORR) in acid media is presented. The nanocatalysts prepared through colloidal reduction of NiCl 2 with NaBH 4 produce Ni core and subsequent reduction of H 2PtCl 6 enables the core-shell structure. Heat-treatment of as-prepared Ni@Pt in hydrogen atmosphere causes change in surface structure due to strong segregation of remaining Ni particle on topmost layer of Ni@Pt alloy, while performing different cycle in cyclic voltammetry remove the top layer of Ni particle; additionally a markedly Ni@Pt stabilization favor the enhanced electrocatalytic activity toward ORR. Ni@Pt core-shell structure was physical characterized using XRD, SEM and TEM techniques. Results indicate average particles of about 7.5 nm in size. Cyclic voltammetry on thin-film rotating disk electrode reveals that Ni@Pt nanoparticles, before and after thermal treatment, have more than twice enhanced catalytic activity than Pt nanoparticles synthesized by the same way. © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

AB - The synthesis of nickel decorated platinum core-shell nanocatalyst for the oxygen reduction reaction (ORR) in acid media is presented. The nanocatalysts prepared through colloidal reduction of NiCl 2 with NaBH 4 produce Ni core and subsequent reduction of H 2PtCl 6 enables the core-shell structure. Heat-treatment of as-prepared Ni@Pt in hydrogen atmosphere causes change in surface structure due to strong segregation of remaining Ni particle on topmost layer of Ni@Pt alloy, while performing different cycle in cyclic voltammetry remove the top layer of Ni particle; additionally a markedly Ni@Pt stabilization favor the enhanced electrocatalytic activity toward ORR. Ni@Pt core-shell structure was physical characterized using XRD, SEM and TEM techniques. Results indicate average particles of about 7.5 nm in size. Cyclic voltammetry on thin-film rotating disk electrode reveals that Ni@Pt nanoparticles, before and after thermal treatment, have more than twice enhanced catalytic activity than Pt nanoparticles synthesized by the same way. © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

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Godínez-Salomón F, Hallen-López M, Solorza-Feria O. Enhanced electroactivity for the oxygen reduction on Ni@Pt core-shell nanocatalysts. 2012. Paper presented at International Journal of Hydrogen Energy, . https://doi.org/10.1016/j.ijhydene.2012.01.157