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Direct Synthesis of Intermetallic Platinum-Alloy Nanoparticles Highly Loaded on Carbon Supports for Efficient Electrocatalysis

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Title
Direct Synthesis of Intermetallic Platinum-Alloy Nanoparticles Highly Loaded on Carbon Supports for Efficient Electrocatalysis
Author(s)
Tae Yong Yoo; Ji Mun Yoo; Arun Kumar Sinha; Bootharaju, MS; Euiyeon Jung; Hyeon Seok Lee; Byoung-Hoon Lee; Jiheon Kim; Wytse Hooch Antink; Yong Min Kim; Jongmin Lee; Eungjun Lee; Dong Wook Lee; Sung-Pyo Cho; Sung Jong Yoo; Yung-Eun Sung; Taeghwan Hyeon
Subject
OXYGEN REDUCTION REACTION, ; FEPT NANOPARTICLES, ; BIMETALLIC CATALYSTS, ; MESOPOROUS CARBON, ; L1(0)-FEPT, ; CHEMISTRY, ; REMOVAL, ; GREEN, ; CO
Publication Date
2020-08
Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.142, no.33, pp.14190 - 14200
Publisher
AMER CHEMICAL SOC
Abstract
© 2020 American Chemical Society. Compared to nanostructured platinum (Pt) catalysts, ordered Pt-based intermetallic nanoparticles supported on a carbon substrate exhibit much enhanced catalytic performance, especially in fuel cell electrocatalysis. However, direct synthesis of homogeneous intermetallic alloy nanocatalysts on carbonaceous supports with high loading is still challenging. Herein, we report a novel synthetic strategy to directly produce highly dispersed MPt alloy nanoparticles (M = Fe, Co, or Ni) on various carbon supports with high catalyst loading. Importantly, a unique bimetallic compound, composed of [M(bpy)(3)](2+) (bpy = 2,2'-bipyridine) and [PtCl6](2-) anion, evenly decomposes graphene oxide on carbon surface and forms uniformly sized intermetallic nanoparticles with a nitrogen-doped carbon protection layer. The excellent oxygen reduction reaction (ORR) activity and stability of the representative reduced graphene oxide (rGO)-supported L1(0)-FePt catalyst (37 wt %-FePt/rGO), exhibiting 18.8 times higher specific activity than commercial Pt/C catalyst without degradation over 20 000 cycles, well demonstrate the effectiveness of our synthetic approach toward uniformly alloyed nanoparticles with high homogeneity
URI
https://pr.ibs.re.kr/handle/8788114/7690
DOI
10.1021/jacs.0c05140
ISSN
0002-7863
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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