Oxide-core Pt-shell electrocatalysts for PEFCs: Photochemical preparation using SnO 2 nanoparticles

M. Nagamine, Z. Noda, H. Manabe, J. Matsuda, A. Hayashi, K. Sasaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Core-shell electrocatalyst, in which a Pt atomic layer covers a nano-size core of a different metal, is attractive in reducing Pt usage for PEFC cathode electrocatalyst. Whilst such core-shell electrocatalysts exhibit very high mass activity for oxygen reduction reaction (ORR), their cost and durability still remain as a challenge. If inexpensive and thermochemically-stable conductive oxide could be applied to the core instead of a noble metal, cost reduction and durability improvement of such core-shell electrocatalysts may be expected. In this study, we try to develop oxide-core Pt-shell electrocatalysts by directly depositing Pt on SnO2 at an atomic level via a photochemical preparation procedure. SnO2 cores with a diameter down to ca. 3 nm could be prepared by comparing various preparation procedures of Sn02 and types of carbon-based materials acting as conductive fillers. Electrochemical activities of such oxide-core Pt-shell electrocatalysts are characterized and discussed.

Original languageEnglish
Title of host publicationECS Transactions
EditorsS. Narayan, A.Z. Weber, H. Xu, S. Mitsushima, P. Shirvanian, D.J. Jones, P.N. Pintauro, P. Strasser, Y.-T. Kim, B.S. Pivovar, Y. Gochi-Ponce, R.A. Mantz, T.F. Fuller, F. Buechi, T.J. Schmidt, V.K. Ramani, K.E. Swider-Lyons, C. Coutanceau, J.M. Fenton, K.E. Ayers, H. Gasteiger, H. Uchida
PublisherElectrochemical Society Inc.
Pages531-540
Number of pages10
Edition13
ISBN (Electronic)9781510871618, 9781510871625, 9781510871632, 9781510871649, 9781510871656, 9781510871670, 9781510871687, 9781510871694, 9781510871700, 9781510871724, 9781510871731, 9781510871748, 9781510871755, 9781510871762
DOIs
Publication statusPublished - Jan 1 2018
EventSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 18, PEFC and E 2018 - AiMES 2018, ECS and SMEQ Joint International Meeting - Cancun, Mexico
Duration: Sep 30 2018Oct 4 2018

Publication series

NameECS Transactions
Number13
Volume86
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Other

OtherSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 18, PEFC and E 2018 - AiMES 2018, ECS and SMEQ Joint International Meeting
CountryMexico
CityCancun
Period9/30/1810/4/18

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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