Radially Phase Segregated PtCu@PtCuNi Dendrite@Frame Nanocatalyst for the Oxygen Reduction Reaction

Jongsik Park; Mrinal Kanti Kabiraz; Hyukbu Kwon; Suhyun Park; Hionsuck Baik; Sang Il Choi; Kwangyeol Lee

doi:10.1021/acsnano.7b04097

Radially Phase Segregated PtCu@PtCuNi Dendrite@Frame Nanocatalyst for the Oxygen Reduction Reaction

Jongsik Park, Mrinal Kanti Kabiraz, Hyukbu Kwon, Suhyun Park, Hionsuck Baik, Sang Il Choi, Kwangyeol Lee

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

103 Citations (Scopus)

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.

Original language	English
Pages (from-to)	10844-10851
Number of pages	8
Journal	ACS nano
Volume	11
Issue number	11
DOIs	https://doi.org/10.1021/acsnano.7b04097
Publication status	Published - 2017 Nov 28

Keywords

dendrite@frame
electrocatalysis
kinetic control
oxygen reduction reaction
phase segregation
ternary alloy

ASJC Scopus subject areas

Materials Science(all)
Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1021/acsnano.7b04097

Cite this

@article{c290721d805f4bbfa59efa3462e6ed92,

title = "Radially Phase Segregated PtCu@PtCuNi Dendrite@Frame Nanocatalyst for the Oxygen Reduction Reaction",

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.",

keywords = "dendrite@frame, electrocatalysis, kinetic control, oxygen reduction reaction, phase segregation, ternary alloy",

author = "Jongsik Park and {Kanti Kabiraz}, Mrinal and Hyukbu Kwon and Suhyun Park and Hionsuck Baik and Choi, {Sang Il} and Kwangyeol Lee",

note = "Funding Information: This work was supported by IBS-R023-D1, NRF-2017R1A2B3005682 NRF-2015R1D1A3A01019467, and Korea University Future Research Grant. The authors thank Korea Basic Science Institute (KBSI) for the usage of their HRTEM and ICP-AES instrument. Funding Information: This work was supported by IBS-R023-D1, NRF-2017R1A2B3005682, NRF-2015R1D1A3A01019467, and Korea University Future Research Grant. The authors thank Korea Basic Science Institute (KBSI) for the usage of their HRTEM and ICP-AES instrument. Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

month = nov,

day = "28",

doi = "10.1021/acsnano.7b04097",

language = "English",

volume = "11",

pages = "10844--10851",

journal = "ACS Nano",

issn = "1936-0851",

publisher = "American Chemical Society",

number = "11",

}

TY - JOUR

T1 - Radially Phase Segregated PtCu@PtCuNi Dendrite@Frame Nanocatalyst for the Oxygen Reduction Reaction

AU - Park, Jongsik

AU - Kanti Kabiraz, Mrinal

AU - Kwon, Hyukbu

AU - Park, Suhyun

AU - Baik, Hionsuck

AU - Choi, Sang Il

AU - Lee, Kwangyeol

N1 - Funding Information: This work was supported by IBS-R023-D1, NRF-2017R1A2B3005682 NRF-2015R1D1A3A01019467, and Korea University Future Research Grant. The authors thank Korea Basic Science Institute (KBSI) for the usage of their HRTEM and ICP-AES instrument. Funding Information: This work was supported by IBS-R023-D1, NRF-2017R1A2B3005682, NRF-2015R1D1A3A01019467, and Korea University Future Research Grant. The authors thank Korea Basic Science Institute (KBSI) for the usage of their HRTEM and ICP-AES instrument. Publisher Copyright: © 2017 American Chemical Society.

PY - 2017/11/28

Y1 - 2017/11/28

N2 - 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.

AB - 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.

KW - dendrite@frame

KW - electrocatalysis

KW - kinetic control

KW - oxygen reduction reaction

KW - phase segregation

KW - ternary alloy

UR - http://www.scopus.com/inward/record.url?scp=85035339417&partnerID=8YFLogxK

U2 - 10.1021/acsnano.7b04097

DO - 10.1021/acsnano.7b04097

M3 - Article

C2 - 29024581

AN - SCOPUS:85035339417

SN - 1936-0851

VL - 11

SP - 10844

EP - 10851

JO - ACS Nano

JF - ACS Nano

IS - 11

ER -

Radially Phase Segregated PtCu@PtCuNi Dendrite@Frame Nanocatalyst for the Oxygen Reduction Reaction

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this