Pt-decorated TiO2 electrocatalysts for PEFCs

Masahiro Iwami; Dai Horiguchi; Zhiyun Noda; Akari Hayashi; Kazunari Sasaki

doi:10.1149/06917.0603ecst

Pt-decorated TiO₂ electrocatalysts for PEFCs

Masahiro Iwami
, Dai Horiguchi
, Zhiyun Noda
, Akari Hayashi
, Kazunari Sasaki

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

7 Citations (Scopus)

Abstract

For polymer electrolyte fuel cell (PEFC) electrocatalysts, carbon corrosion is one of the important technological issues to be solved. TiO₂ is a possible alternative support material. In this study, vaporgrown carbon fiber (VGCF-H) conductive fillers are applied as the built-in electron-conductive backbone, on which Nb-doped TiO₂ is coated and Pt nanoparticles are then impregnated. FESEM images of Pt/Ti_0.95Nb_0.05O₂/VGCF-H reveal selective impregnation of Pt nanoparticles on the TiO₂ grains rather than the VGCF-H conductive fillers. This conductive-filler-integrated electrocatalyst exhibits relatively higher electrochemical surface area (ECSA) and oxygen reduction reaction (ORR) activity, compared to the electrocatalysts without conductive fillers.

Original language	English
Title of host publication	Polymer Electrolyte Fuel Cells 15, PEFC 15
Editors	H. A. Gasteiger, A. Z. Weber, V. K. Ramani, T. F. Fuller, R. A. Mantz, H. Uchida, F. N. Buchi, M. Edmundson, C. Coutanceau, J. M. Fenton, S. Mitsushima, T. J. Schmidt, K. Shinohara, K. Swider-Lyons, D. J. Jones, B. S. Pivovar, K. E. Ayers, K. A. Perry, S. R. Narayanan, P. Strasser
Publisher	Electrochemical Society Inc.
Pages	603-609
Number of pages	7
Edition	17
ISBN (Electronic)	9781607685395
DOIs	https://doi.org/10.1149/06917.0603ecst
Publication status	Published - 2015
Event	Symposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting - Phoenix, United States Duration: Oct 11 2015 → Oct 15 2015

Publication series

Name	ECS Transactions
Number	17
Volume	69
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Other

Other	Symposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting
Country/Territory	United States
City	Phoenix
Period	10/11/15 → 10/15/15

All Science Journal Classification (ASJC) codes

General Engineering

Access to Document

10.1149/06917.0603ecst

Cite this

Iwami, M., Horiguchi, D., Noda, Z., Hayashi, A., & Sasaki, K. (2015). Pt-decorated TiO₂ electrocatalysts for PEFCs. In H. A. Gasteiger, A. Z. Weber, V. K. Ramani, T. F. Fuller, R. A. Mantz, H. Uchida, F. N. Buchi, M. Edmundson, C. Coutanceau, J. M. Fenton, S. Mitsushima, T. J. Schmidt, K. Shinohara, K. Swider-Lyons, D. J. Jones, B. S. Pivovar, K. E. Ayers, K. A. Perry, S. R. Narayanan, & P. Strasser (Eds.), Polymer Electrolyte Fuel Cells 15, PEFC 15 (17 ed., pp. 603-609). (ECS Transactions; Vol. 69, No. 17). Electrochemical Society Inc.. https://doi.org/10.1149/06917.0603ecst

Pt-decorated TiO₂ electrocatalysts for PEFCs. / Iwami, Masahiro; Horiguchi, Dai; Noda, Zhiyun et al.
Polymer Electrolyte Fuel Cells 15, PEFC 15. ed. / H. A. Gasteiger; A. Z. Weber; V. K. Ramani; T. F. Fuller; R. A. Mantz; H. Uchida; F. N. Buchi; M. Edmundson; C. Coutanceau; J. M. Fenton; S. Mitsushima; T. J. Schmidt; K. Shinohara; K. Swider-Lyons; D. J. Jones; B. S. Pivovar; K. E. Ayers; K. A. Perry; S. R. Narayanan; P. Strasser. 17. ed. Electrochemical Society Inc., 2015. p. 603-609 (ECS Transactions; Vol. 69, No. 17).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Iwami, M, Horiguchi, D, Noda, Z , Hayashi, A & Sasaki, K 2015, Pt-decorated TiO₂ electrocatalysts for PEFCs. in HA Gasteiger, AZ Weber, VK Ramani, TF Fuller, RA Mantz, H Uchida, FN Buchi, M Edmundson, C Coutanceau, JM Fenton, S Mitsushima, TJ Schmidt, K Shinohara, K Swider-Lyons, DJ Jones, BS Pivovar, KE Ayers, KA Perry, SR Narayanan & P Strasser (eds), Polymer Electrolyte Fuel Cells 15, PEFC 15. 17 edn, ECS Transactions, no. 17, vol. 69, Electrochemical Society Inc., pp. 603-609, Symposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting, Phoenix, United States, 10/11/15. https://doi.org/10.1149/06917.0603ecst

Iwami M, Horiguchi D, Noda Z , Hayashi A , Sasaki K. Pt-decorated TiO₂ electrocatalysts for PEFCs. In Gasteiger HA, Weber AZ, Ramani VK, Fuller TF, Mantz RA, Uchida H, Buchi FN, Edmundson M, Coutanceau C, Fenton JM, Mitsushima S, Schmidt TJ, Shinohara K, Swider-Lyons K, Jones DJ, Pivovar BS, Ayers KE, Perry KA, Narayanan SR, Strasser P, editors, Polymer Electrolyte Fuel Cells 15, PEFC 15. 17 ed. Electrochemical Society Inc. 2015. p. 603-609. (ECS Transactions; 17). doi: 10.1149/06917.0603ecst

Iwami, Masahiro ; Horiguchi, Dai ; Noda, Zhiyun et al. / Pt-decorated TiO₂ electrocatalysts for PEFCs. Polymer Electrolyte Fuel Cells 15, PEFC 15. editor / H. A. Gasteiger ; A. Z. Weber ; V. K. Ramani ; T. F. Fuller ; R. A. Mantz ; H. Uchida ; F. N. Buchi ; M. Edmundson ; C. Coutanceau ; J. M. Fenton ; S. Mitsushima ; T. J. Schmidt ; K. Shinohara ; K. Swider-Lyons ; D. J. Jones ; B. S. Pivovar ; K. E. Ayers ; K. A. Perry ; S. R. Narayanan ; P. Strasser. 17. ed. Electrochemical Society Inc., 2015. pp. 603-609 (ECS Transactions; 17).

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AU - Hayashi, Akari

AU - Sasaki, Kazunari

N1 - Publisher Copyright: © The Electrochemical Society.

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AB - For polymer electrolyte fuel cell (PEFC) electrocatalysts, carbon corrosion is one of the important technological issues to be solved. TiO2 is a possible alternative support material. In this study, vaporgrown carbon fiber (VGCF-H) conductive fillers are applied as the built-in electron-conductive backbone, on which Nb-doped TiO2 is coated and Pt nanoparticles are then impregnated. FESEM images of Pt/Ti0.95Nb0.05O2/VGCF-H reveal selective impregnation of Pt nanoparticles on the TiO2 grains rather than the VGCF-H conductive fillers. This conductive-filler-integrated electrocatalyst exhibits relatively higher electrochemical surface area (ECSA) and oxygen reduction reaction (ORR) activity, compared to the electrocatalysts without conductive fillers.

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