Highly efficient and durable TiN nanofiber electrocatalyst supports

Hyun Kim, Min Kyung Cho, Jeong An Kwon, Yeon Hun Jeong, Kyung Jin Lee, Na Young Kim, Min Jung Kim, Sung Jong Yoo, Jong Hyun Jang, Hyoung Juhn Kim, SukWoo Nam, Dong Hee Lim, Eun Ae Cho, Kwan Young Lee, Jin Young Kim

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

To date, carbon-based materials including various carbon nanostructured materials have been extensively used as an electrocatalyst support for proton exchange membrane fuel cell (PEMFC) applications due to their practical nature. However, carbon dissolution or corrosion caused by high electrode potential in the presence of O2 and/or water has been identified as one of the main failure modes for the device operation. Here, we report the first TiN nanofiber (TNF)-based nonwoven structured materials to be constructed via electrospinning and subsequent two-step thermal treatment processes as a support for the PEMFC catalyst. Pt catalyst nanoparticles (NPs) deposited on the TNFs (Pt/TNFs) were electrochemically characterized with respect to oxygen reduction reaction (ORR) activity and durability in an acidic medium. From the electrochemical tests, the TNF-supported Pt catalyst was better and more stable in terms of its catalytic performance compared to a commercially available carbon-supported Pt catalyst. For example, the initial oxygen reduction performance was comparable for both cases, while the Pt/TNF showed much higher durability from an accelerated degradation test (ADT) configuration. It is understood that the improved catalytic roles of TNFs on the supported Pt NPs for ORR are due to the high electrical conductivity arising from the extended connectivity, high inertness to the electrochemical environment and strong catalyst-support interactions.

Original languageEnglish
Pages (from-to)18429-18434
Number of pages6
JournalNanoscale
Volume7
Issue number44
DOIs
Publication statusPublished - 2015 Nov 28

Fingerprint

Electrocatalysts
Nanofibers
Catalyst supports
Carbon
Proton exchange membrane fuel cells (PEMFC)
Oxygen
Durability
Nanoparticles
Catalysts
Electrospinning
Nanostructured materials
Failure modes
Dissolution
Heat treatment
Corrosion
Degradation
Electrodes
Water

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Kim, H., Cho, M. K., Kwon, J. A., Jeong, Y. H., Lee, K. J., Kim, N. Y., ... Kim, J. Y. (2015). Highly efficient and durable TiN nanofiber electrocatalyst supports. Nanoscale, 7(44), 18429-18434. https://doi.org/10.1039/c5nr04082e

Highly efficient and durable TiN nanofiber electrocatalyst supports. / Kim, Hyun; Cho, Min Kyung; Kwon, Jeong An; Jeong, Yeon Hun; Lee, Kyung Jin; Kim, Na Young; Kim, Min Jung; Yoo, Sung Jong; Jang, Jong Hyun; Kim, Hyoung Juhn; Nam, SukWoo; Lim, Dong Hee; Cho, Eun Ae; Lee, Kwan Young; Kim, Jin Young.

In: Nanoscale, Vol. 7, No. 44, 28.11.2015, p. 18429-18434.

Research output: Contribution to journalArticle

Kim, H, Cho, MK, Kwon, JA, Jeong, YH, Lee, KJ, Kim, NY, Kim, MJ, Yoo, SJ, Jang, JH, Kim, HJ, Nam, S, Lim, DH, Cho, EA, Lee, KY & Kim, JY 2015, 'Highly efficient and durable TiN nanofiber electrocatalyst supports', Nanoscale, vol. 7, no. 44, pp. 18429-18434. https://doi.org/10.1039/c5nr04082e
Kim H, Cho MK, Kwon JA, Jeong YH, Lee KJ, Kim NY et al. Highly efficient and durable TiN nanofiber electrocatalyst supports. Nanoscale. 2015 Nov 28;7(44):18429-18434. https://doi.org/10.1039/c5nr04082e
Kim, Hyun ; Cho, Min Kyung ; Kwon, Jeong An ; Jeong, Yeon Hun ; Lee, Kyung Jin ; Kim, Na Young ; Kim, Min Jung ; Yoo, Sung Jong ; Jang, Jong Hyun ; Kim, Hyoung Juhn ; Nam, SukWoo ; Lim, Dong Hee ; Cho, Eun Ae ; Lee, Kwan Young ; Kim, Jin Young. / Highly efficient and durable TiN nanofiber electrocatalyst supports. In: Nanoscale. 2015 ; Vol. 7, No. 44. pp. 18429-18434.
@article{06623df0c43c4212811693f7a92371ea,
title = "Highly efficient and durable TiN nanofiber electrocatalyst supports",
abstract = "To date, carbon-based materials including various carbon nanostructured materials have been extensively used as an electrocatalyst support for proton exchange membrane fuel cell (PEMFC) applications due to their practical nature. However, carbon dissolution or corrosion caused by high electrode potential in the presence of O2 and/or water has been identified as one of the main failure modes for the device operation. Here, we report the first TiN nanofiber (TNF)-based nonwoven structured materials to be constructed via electrospinning and subsequent two-step thermal treatment processes as a support for the PEMFC catalyst. Pt catalyst nanoparticles (NPs) deposited on the TNFs (Pt/TNFs) were electrochemically characterized with respect to oxygen reduction reaction (ORR) activity and durability in an acidic medium. From the electrochemical tests, the TNF-supported Pt catalyst was better and more stable in terms of its catalytic performance compared to a commercially available carbon-supported Pt catalyst. For example, the initial oxygen reduction performance was comparable for both cases, while the Pt/TNF showed much higher durability from an accelerated degradation test (ADT) configuration. It is understood that the improved catalytic roles of TNFs on the supported Pt NPs for ORR are due to the high electrical conductivity arising from the extended connectivity, high inertness to the electrochemical environment and strong catalyst-support interactions.",
author = "Hyun Kim and Cho, {Min Kyung} and Kwon, {Jeong An} and Jeong, {Yeon Hun} and Lee, {Kyung Jin} and Kim, {Na Young} and Kim, {Min Jung} and Yoo, {Sung Jong} and Jang, {Jong Hyun} and Kim, {Hyoung Juhn} and SukWoo Nam and Lim, {Dong Hee} and Cho, {Eun Ae} and Lee, {Kwan Young} and Kim, {Jin Young}",
year = "2015",
month = "11",
day = "28",
doi = "10.1039/c5nr04082e",
language = "English",
volume = "7",
pages = "18429--18434",
journal = "Nanoscale",
issn = "2040-3364",
publisher = "Royal Society of Chemistry",
number = "44",

}

TY - JOUR

T1 - Highly efficient and durable TiN nanofiber electrocatalyst supports

AU - Kim, Hyun

AU - Cho, Min Kyung

AU - Kwon, Jeong An

AU - Jeong, Yeon Hun

AU - Lee, Kyung Jin

AU - Kim, Na Young

AU - Kim, Min Jung

AU - Yoo, Sung Jong

AU - Jang, Jong Hyun

AU - Kim, Hyoung Juhn

AU - Nam, SukWoo

AU - Lim, Dong Hee

AU - Cho, Eun Ae

AU - Lee, Kwan Young

AU - Kim, Jin Young

PY - 2015/11/28

Y1 - 2015/11/28

N2 - To date, carbon-based materials including various carbon nanostructured materials have been extensively used as an electrocatalyst support for proton exchange membrane fuel cell (PEMFC) applications due to their practical nature. However, carbon dissolution or corrosion caused by high electrode potential in the presence of O2 and/or water has been identified as one of the main failure modes for the device operation. Here, we report the first TiN nanofiber (TNF)-based nonwoven structured materials to be constructed via electrospinning and subsequent two-step thermal treatment processes as a support for the PEMFC catalyst. Pt catalyst nanoparticles (NPs) deposited on the TNFs (Pt/TNFs) were electrochemically characterized with respect to oxygen reduction reaction (ORR) activity and durability in an acidic medium. From the electrochemical tests, the TNF-supported Pt catalyst was better and more stable in terms of its catalytic performance compared to a commercially available carbon-supported Pt catalyst. For example, the initial oxygen reduction performance was comparable for both cases, while the Pt/TNF showed much higher durability from an accelerated degradation test (ADT) configuration. It is understood that the improved catalytic roles of TNFs on the supported Pt NPs for ORR are due to the high electrical conductivity arising from the extended connectivity, high inertness to the electrochemical environment and strong catalyst-support interactions.

AB - To date, carbon-based materials including various carbon nanostructured materials have been extensively used as an electrocatalyst support for proton exchange membrane fuel cell (PEMFC) applications due to their practical nature. However, carbon dissolution or corrosion caused by high electrode potential in the presence of O2 and/or water has been identified as one of the main failure modes for the device operation. Here, we report the first TiN nanofiber (TNF)-based nonwoven structured materials to be constructed via electrospinning and subsequent two-step thermal treatment processes as a support for the PEMFC catalyst. Pt catalyst nanoparticles (NPs) deposited on the TNFs (Pt/TNFs) were electrochemically characterized with respect to oxygen reduction reaction (ORR) activity and durability in an acidic medium. From the electrochemical tests, the TNF-supported Pt catalyst was better and more stable in terms of its catalytic performance compared to a commercially available carbon-supported Pt catalyst. For example, the initial oxygen reduction performance was comparable for both cases, while the Pt/TNF showed much higher durability from an accelerated degradation test (ADT) configuration. It is understood that the improved catalytic roles of TNFs on the supported Pt NPs for ORR are due to the high electrical conductivity arising from the extended connectivity, high inertness to the electrochemical environment and strong catalyst-support interactions.

UR - http://www.scopus.com/inward/record.url?scp=84946829651&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84946829651&partnerID=8YFLogxK

U2 - 10.1039/c5nr04082e

DO - 10.1039/c5nr04082e

M3 - Article

VL - 7

SP - 18429

EP - 18434

JO - Nanoscale

JF - Nanoscale

SN - 2040-3364

IS - 44

ER -