Composition-tunable Pt-Co alloy nanoparticle networks: facile room-temperature synthesis and supportless electrocatalytic applications.
Chemphyschem
; 13(10): 2601-9, 2012 Jul 16.
Article
en En
| MEDLINE
| ID: mdl-22505245
ABSTRACT
Pt-Co alloy nanoparticle networks (NNs) with adjustable composition are synthesized by co-reduction of H(2) PtCl(6) and CoCl(2) with NaBH(4) in an ethylene glycol assisted cetyltrimethylammonium bromide/water/chloroform system at room temperature. Electrochemical measurements indicate that the as-prepared spongelike Pt-Co NNs exhibit composition-dependent electrocatalytic activities and CO tolerance with better durability toward methanol and formic acid oxidation than commercially available Pt/C catalyst. In particular, Pt(3) Co NNs show the highest specific activity, while Pt(2) Co NNs exhibit optimal mass activity among Pt-Co alloy NNs with different composition. These Pt-Co alloy NNs may be promising supportless anode catalysts for the direct methanol and direct formic acid fuel cells.
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1
Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
Chemphyschem
Asunto de la revista:
BIOFISICA
/
QUIMICA
Año:
2012
Tipo del documento:
Article
País de afiliación:
China