Application of dense nano-thin platinum films for low-temperature solid oxide fuel cells by atomic layer deposition

Sanghoon Ji, Ikwhang Chang, Gu Young Cho, Yoon Ho Lee, Joon Hyung Shim, Suk Won Cha

    Research output: Contribution to journalArticlepeer-review

    43 Citations (Scopus)

    Abstract

    Nano-thin platinum (Pt) films with a dense microstructure for low-temperature solid oxide fuel cells (LT-SOFCs) were fabricated by atomic layer deposition (ALD) and were characterized in terms of their micro-structural properties and electrochemical performance. Pt thin films with a purity level of ∼99% were achieved by controlling the O2 pulsing time. The agglomeration behavior of the ALD Pt thin films was characterized by the annealing temperature, becoming extremely severe above 550°C. An LT-SOFC with a 25 nm thick dense ALD Pt cathode layer exhibited a peak power density of ∼110 mW/cm2 at 450°C.

    Original languageEnglish
    Pages (from-to)12402-12408
    Number of pages7
    JournalInternational Journal of Hydrogen Energy
    Volume39
    Issue number23
    DOIs
    Publication statusPublished - 2014 Aug 4

    Bibliographical note

    Funding Information:
    This work was partially supported by the Global Frontier R&D Program in the Center for Multiscale Energy System funded by the National Research Foundation under the Ministry of Education, Science and Technology, Korea ( 2011-0031569 ), and was partially supported by a government research fund from the Ministry of Education, Science, and Technology in Korea ( 2011-0029576 ).

    Keywords

    • Atomic layer deposition
    • Dense
    • Nano-thin
    • Platinum
    • Solid oxide fuel cell

    ASJC Scopus subject areas

    • Renewable Energy, Sustainability and the Environment
    • Fuel Technology
    • Condensed Matter Physics
    • Energy Engineering and Power Technology

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