Hybrid structure of tio2-graphitic carbon as a support of pt nanoparticles for catalyzing oxygen reduction reaction

Su Jin Jang; Yun Chan Kang; Jin Su Hyun; Tae Ho Shin; Young Wook Lee; Kwang Chul Roh

doi:10.3390/catal11101196

Hybrid structure of tio₂-graphitic carbon as a support of pt nanoparticles for catalyzing oxygen reduction reaction

Su Jin Jang, Yun Chan Kang, Jin Su Hyun, Tae Ho Shin, Young Wook Lee, Kwang Chul Roh

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

7 Citations (Scopus)

Abstract

The durability of catalysts in fuel cells is a longstanding issue that needs to be re-solved.Catalyst stability of the fuel cell has always been a problem, studies are underway to address them. Herein, to address this issue, we synthesize a hybrid structure consisting of SP carbon (SP) as the graphitic carbon and TiO₂ as the metal oxide using a microwave method for use as a support for Pt nanoparticles. Anatase TiO₂ and Pt nanoparticles with sizes of ~5 and 3.5 ± 1.4 nm, respectively, are uniformly dispersed on a modified graphitic SP carbon support (Pt-TiO₂-SP). This supported Pt catalyst exhibits significantly improves durability in the oxygen reduction reaction (ORR). Further-more, the Pt-TiO₂-SP carbon hybrid catalyst manifests superior electrocatalytic stability and higher onset potential in ORR than those exhibited by Pt-SP carbon without TiO₂. Pt-TiO₂-SP exhibits an activity loss of less than 68 mV after 5000 electrochemical cycles, whereas an activity loss of ~100 mV is observed for Pt-SP carbon in a stability test. These results suggest that the strong metal–support interaction in TiO₂-supported Pt catalyst significantly enhances the activity of Pt nanocatalyst.

Original language	English
Article number	1196
Journal	Catalysts
Volume	11
Issue number	10
DOIs	https://doi.org/10.3390/catal11101196
Publication status	Published - 2021 Oct

Bibliographical note

Funding Information:
This research was supported by the Basic Science Research Program of the National Research Foundation of Korea (NRF-202006610001). This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KEPET) grant funded by the Korean government (MOTIE) (20183030032010). This work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean government (MOTIE) (20183030032010).

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

Catalyst support
Durability
Fuel cell
Graphitic carbon
TiO-carbon hybrid

ASJC Scopus subject areas

General Environmental Science
Catalysis
Physical and Theoretical Chemistry

Access to Document

10.3390/catal11101196

Cite this

@article{3690b4bf73794915b09633546c13df3e,

title = "Hybrid structure of tio2-graphitic carbon as a support of pt nanoparticles for catalyzing oxygen reduction reaction",

abstract = "The durability of catalysts in fuel cells is a longstanding issue that needs to be re-solved.Catalyst stability of the fuel cell has always been a problem, studies are underway to address them. Herein, to address this issue, we synthesize a hybrid structure consisting of SP carbon (SP) as the graphitic carbon and TiO2 as the metal oxide using a microwave method for use as a support for Pt nanoparticles. Anatase TiO2 and Pt nanoparticles with sizes of ~5 and 3.5 ± 1.4 nm, respectively, are uniformly dispersed on a modified graphitic SP carbon support (Pt-TiO2-SP). This supported Pt catalyst exhibits significantly improves durability in the oxygen reduction reaction (ORR). Further-more, the Pt-TiO2-SP carbon hybrid catalyst manifests superior electrocatalytic stability and higher onset potential in ORR than those exhibited by Pt-SP carbon without TiO2. Pt-TiO2-SP exhibits an activity loss of less than 68 mV after 5000 electrochemical cycles, whereas an activity loss of ~100 mV is observed for Pt-SP carbon in a stability test. These results suggest that the strong metal–support interaction in TiO2-supported Pt catalyst significantly enhances the activity of Pt nanocatalyst.",

keywords = "Catalyst support, Durability, Fuel cell, Graphitic carbon, TiO-carbon hybrid",

author = "Jang, {Su Jin} and Kang, {Yun Chan} and Hyun, {Jin Su} and Shin, {Tae Ho} and Lee, {Young Wook} and Roh, {Kwang Chul}",

note = "Funding Information: This research was supported by the Basic Science Research Program of the National Research Foundation of Korea (NRF-202006610001). This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KEPET) grant funded by the Korean government (MOTIE) (20183030032010). This work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean government (MOTIE) (20183030032010). Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

month = oct,

doi = "10.3390/catal11101196",

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T1 - Hybrid structure of tio2-graphitic carbon as a support of pt nanoparticles for catalyzing oxygen reduction reaction

AU - Jang, Su Jin

AU - Kang, Yun Chan

AU - Hyun, Jin Su

AU - Shin, Tae Ho

AU - Lee, Young Wook

AU - Roh, Kwang Chul

N1 - Funding Information: This research was supported by the Basic Science Research Program of the National Research Foundation of Korea (NRF-202006610001). This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KEPET) grant funded by the Korean government (MOTIE) (20183030032010). This work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean government (MOTIE) (20183030032010). Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2021/10

Y1 - 2021/10

N2 - The durability of catalysts in fuel cells is a longstanding issue that needs to be re-solved.Catalyst stability of the fuel cell has always been a problem, studies are underway to address them. Herein, to address this issue, we synthesize a hybrid structure consisting of SP carbon (SP) as the graphitic carbon and TiO2 as the metal oxide using a microwave method for use as a support for Pt nanoparticles. Anatase TiO2 and Pt nanoparticles with sizes of ~5 and 3.5 ± 1.4 nm, respectively, are uniformly dispersed on a modified graphitic SP carbon support (Pt-TiO2-SP). This supported Pt catalyst exhibits significantly improves durability in the oxygen reduction reaction (ORR). Further-more, the Pt-TiO2-SP carbon hybrid catalyst manifests superior electrocatalytic stability and higher onset potential in ORR than those exhibited by Pt-SP carbon without TiO2. Pt-TiO2-SP exhibits an activity loss of less than 68 mV after 5000 electrochemical cycles, whereas an activity loss of ~100 mV is observed for Pt-SP carbon in a stability test. These results suggest that the strong metal–support interaction in TiO2-supported Pt catalyst significantly enhances the activity of Pt nanocatalyst.

AB - The durability of catalysts in fuel cells is a longstanding issue that needs to be re-solved.Catalyst stability of the fuel cell has always been a problem, studies are underway to address them. Herein, to address this issue, we synthesize a hybrid structure consisting of SP carbon (SP) as the graphitic carbon and TiO2 as the metal oxide using a microwave method for use as a support for Pt nanoparticles. Anatase TiO2 and Pt nanoparticles with sizes of ~5 and 3.5 ± 1.4 nm, respectively, are uniformly dispersed on a modified graphitic SP carbon support (Pt-TiO2-SP). This supported Pt catalyst exhibits significantly improves durability in the oxygen reduction reaction (ORR). Further-more, the Pt-TiO2-SP carbon hybrid catalyst manifests superior electrocatalytic stability and higher onset potential in ORR than those exhibited by Pt-SP carbon without TiO2. Pt-TiO2-SP exhibits an activity loss of less than 68 mV after 5000 electrochemical cycles, whereas an activity loss of ~100 mV is observed for Pt-SP carbon in a stability test. These results suggest that the strong metal–support interaction in TiO2-supported Pt catalyst significantly enhances the activity of Pt nanocatalyst.

KW - Catalyst support

KW - Durability

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KW - Graphitic carbon

KW - TiO-carbon hybrid

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