Curvature-Induced Metal-Support Interaction of an Islands-by-Islands Composite of Platinum Catalyst and Carbon Nano-onion for Durable Oxygen Reduction

Juchan Yang; Su Hwan Kim; Sang Kyu Kwak; Hyun Kon Song

doi:10.1021/acsami.7b04410

Curvature-Induced Metal-Support Interaction of an Islands-by-Islands Composite of Platinum Catalyst and Carbon Nano-onion for Durable Oxygen Reduction

Juchan Yang
, Su Hwan Kim
, Sang Kyu Kwak^*
, Hyun Kon Song

^*Corresponding author for this work

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

52 Citations (Scopus)

Abstract

Geometry of carbon supports significantly affected electrochemical durability of Pt/C (platinum electrocatalyst supported by carbon) for oxygen reduction reaction (ORR). Carbon nano-onion (CNO) was used as the support, which is characterized by its nanosize (similar to Pt size) and high curvature. Superior ORR durability was guaranteed by Pt/CNO due to (1) its islands-by-islands configuration to isolate each Pt nanoparticle from its neighbors by CNO particles; (2) highly tortuous void structure of the configuration to suppress Ostwald ripening; and (3) the curvature-induced strong interaction between CNO and Pt. The finding that highly curved carbon surface encourages electron donation to catalysts was first reported.

Original language	English
Pages (from-to)	23302-23308
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	9
Issue number	28
DOIs	https://doi.org/10.1021/acsami.7b04410
Publication status	Published - 2017 Jul 19
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

Keywords

carbon nano-onion
curved structure
electrocatalyst
islands-by-islands composite
oxygen reduction

ASJC Scopus subject areas

General Materials Science

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10.1021/acsami.7b04410

Cite this

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title = "Curvature-Induced Metal-Support Interaction of an Islands-by-Islands Composite of Platinum Catalyst and Carbon Nano-onion for Durable Oxygen Reduction",

abstract = "Geometry of carbon supports significantly affected electrochemical durability of Pt/C (platinum electrocatalyst supported by carbon) for oxygen reduction reaction (ORR). Carbon nano-onion (CNO) was used as the support, which is characterized by its nanosize (similar to Pt size) and high curvature. Superior ORR durability was guaranteed by Pt/CNO due to (1) its islands-by-islands configuration to isolate each Pt nanoparticle from its neighbors by CNO particles; (2) highly tortuous void structure of the configuration to suppress Ostwald ripening; and (3) the curvature-induced strong interaction between CNO and Pt. The finding that highly curved carbon surface encourages electron donation to catalysts was first reported.",

keywords = "carbon nano-onion, curved structure, electrocatalyst, islands-by-islands composite, oxygen reduction",

author = "Juchan Yang and Kim, \{Su Hwan\} and Kwak, \{Sang Kyu\} and Song, \{Hyun Kon\}",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

month = jul,

day = "19",

doi = "10.1021/acsami.7b04410",

language = "English",

volume = "9",

pages = "23302--23308",

journal = "ACS Applied Materials and Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

number = "28",

}

TY - JOUR

T1 - Curvature-Induced Metal-Support Interaction of an Islands-by-Islands Composite of Platinum Catalyst and Carbon Nano-onion for Durable Oxygen Reduction

AU - Yang, Juchan

AU - Kim, Su Hwan

AU - Kwak, Sang Kyu

AU - Song, Hyun Kon

PY - 2017/7/19

Y1 - 2017/7/19

N2 - Geometry of carbon supports significantly affected electrochemical durability of Pt/C (platinum electrocatalyst supported by carbon) for oxygen reduction reaction (ORR). Carbon nano-onion (CNO) was used as the support, which is characterized by its nanosize (similar to Pt size) and high curvature. Superior ORR durability was guaranteed by Pt/CNO due to (1) its islands-by-islands configuration to isolate each Pt nanoparticle from its neighbors by CNO particles; (2) highly tortuous void structure of the configuration to suppress Ostwald ripening; and (3) the curvature-induced strong interaction between CNO and Pt. The finding that highly curved carbon surface encourages electron donation to catalysts was first reported.

AB - Geometry of carbon supports significantly affected electrochemical durability of Pt/C (platinum electrocatalyst supported by carbon) for oxygen reduction reaction (ORR). Carbon nano-onion (CNO) was used as the support, which is characterized by its nanosize (similar to Pt size) and high curvature. Superior ORR durability was guaranteed by Pt/CNO due to (1) its islands-by-islands configuration to isolate each Pt nanoparticle from its neighbors by CNO particles; (2) highly tortuous void structure of the configuration to suppress Ostwald ripening; and (3) the curvature-induced strong interaction between CNO and Pt. The finding that highly curved carbon surface encourages electron donation to catalysts was first reported.

KW - carbon nano-onion

KW - curved structure

KW - electrocatalyst

KW - islands-by-islands composite

KW - oxygen reduction

UR - https://www.scopus.com/pages/publications/85024888607

U2 - 10.1021/acsami.7b04410

DO - 10.1021/acsami.7b04410

M3 - Article

C2 - 28665110

AN - SCOPUS:85024888607

SN - 1944-8244

VL - 9

SP - 23302

EP - 23308

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 28

ER -

Curvature-Induced Metal-Support Interaction of an Islands-by-Islands Composite of Platinum Catalyst and Carbon Nano-onion for Durable Oxygen Reduction

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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