Palladium on yttrium-embedded carbon nanofibers as electrocatalyst for oxygen reduction reaction in acidic media

Title
Palladium on yttrium-embedded carbon nanofibers as electrocatalyst for oxygen reduction reaction in acidic media
Authors
이성호이윤기이철호박하늘정용식조한익
Keywords
Palladium-yttrium alloying; Carbon nanofiber; Electrocatalyst; Oxygen reduction reaction
Issue Date
2019-08
Publisher
Electrochemistry communications
Citation
VOL 106-5
Abstract
Pd-Y alloy nanoparticle-embedded carbon nanofiber (CNF) were sequentially synthesized by electrospinning a solution mixture containing Y precursor and polyacrylonitrile, stabilization, carbonization at 1200 °C, activation, and impregnation of Pd. The CNF acted as catalytic supports and templates, retaining the nanoparticle size at high temperatures; under these conditions, other nanomaterials would easily aggregate or sinter. To expose the surface of Y nanoparticles embedded into the CNF (Y-ACNF), mild and selective oxidation was conducted. The impregnated Pd exhibited the excellent degree of alloying with and dispersion on Y-ACNF, leading to outstanding activity with four-electron reaction of Pd3/Y-ACNF for oxygen reduction reaction comparable to commercial platinum-based catalysts.
URI
http://pubs.kist.re.kr/handle/201004/69861
ISSN
1388-2481
Appears in Collections:
KIST Publication > Article
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