Radially Phase Segregated PtCu@PtCuNi Dendrite@Frame Nanocatalyst for the Oxygen Reduction Reaction
- Authors
- Park, Jongsik; Kabiraz, Mrinal Kanti; Kwon, Hyukbu; Park, Suhyun; Baik, Hionsuck; Choi, Sang-Il; Lee, Kwangyeol
- Issue Date
- 11월-2017
- Publisher
- AMER CHEMICAL SOC
- Keywords
- dendrite@frame; kinetic control; phase segregation; ternary alloy; electrocatalysis; oxygen reduction reaction
- Citation
- ACS NANO, v.11, no.11, pp.10844 - 10851
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS NANO
- Volume
- 11
- Number
- 11
- Start Page
- 10844
- End Page
- 10851
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/81753
- DOI
- 10.1021/acsnano.7b04097
- ISSN
- 1936-0851
- Abstract
- Pt-based alloy nanoframes have shown great potential as electrocatalysts toward the oxygen reduction reaction (ORR) in fuel cells. However, the intrinsically infirm nanoframes could be severely deformed during extended electro-cyclings, which eventually leads to the loss of the initial catalytic activity. Therefore, the structurally robust nanoframe is a worthy synthetic target. Furthermore, ternary alloy phase electrocatalysts offer more opportunities in optimizing the stability and activity than binary alloy ones. Herein, we report a robust PtCuNi ternary nanoframe, structurally fortified with an inner-lying PtCu dendrite, which shows a highly active and stable catalytic performance toward ORR. Remarkably, the PtCu@PtCuNi catalyst exhibited 11 and 16 times higher mass and specific activities than those of commercial Pt/C.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Science > Department of Chemistry > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.