A new candidate cathode material as (Co/Mg)-coated Ni powder for molten carbonate fuel cell

Eunjoo Park, Mingzi Hong, Hyunsuk Lee, Minhyuk Kim, Keon Kim

    Research output: Contribution to journalArticlepeer-review

    17 Citations (Scopus)

    Abstract

    Co/Mg solid solution coated Ni powder, where Mg-doped LiCoO2 is coated on NiO in molten carbonate, has been used as a new cathode material to reduce the solubility of NiO and to maintain the advantages of NiO cathode. The (Co/Mg)-coated NiO cathode was prepared by a coating Co/Mg solid solution on the surface of the Ni powder using a PVA assisted sol-gel method. The phase changes of the (Co/Mg)-coated Ni powder after immersed into Li/K eutectic carbonate mixtures at 550 °C ∼ 850 °C for 48 h was performed by XRD and Raman. SEM was used to study the particle morphologies. Co/Mg solid solution was coated on the surface of the Ni powder and Li(NiCoMg)O2 is formed on NiO in molten carbonate. It is expected that the Li(NiCoMg)O2 phase will reduce the solubility of NiO cathode in molten carbonate.

    Original languageEnglish
    Pages (from-to)84-92
    Number of pages9
    JournalJournal of Power Sources
    Volume143
    Issue number1-2
    DOIs
    Publication statusPublished - 2005 Apr 27

    Bibliographical note

    Funding Information:
    This study was supported by the Korea Electric Power Corporation.

    Copyright:
    Copyright 2008 Elsevier B.V., All rights reserved.

    Keywords

    • (Co/Mg)-coated NiO cathode
    • MCFC
    • Sol-gel method
    • Solubility

    ASJC Scopus subject areas

    • Renewable Energy, Sustainability and the Environment
    • Energy Engineering and Power Technology
    • Physical and Theoretical Chemistry
    • Electrical and Electronic Engineering

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