High ionic conductivity in a LiFeO2-LiAlO2 composite under H2/air fuel cell conditions

Lan, Rong and Tao, Shanwen (2015) High ionic conductivity in a LiFeO2-LiAlO2 composite under H2/air fuel cell conditions. Chemistry - A European Journal, 21 (3). pp. 1350-1358. ISSN 0947-6539 (https://doi.org/10.1002/chem.201404476)

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Abstract

New ionic conducting materials for electrolytes for electrochemical devices have been attracting the interest of researchers in energy materials. Here, for the first time, we report a conductive composite with high ionic conductivity derived from an electronic conductor α-LiFeO2 and an insulator γ-LiAlO2. High conductivity was observed in the α-LiFeO2-γ-LiAlO2 composite when prepared by a solid state reaction method. However, the conductivity enhancement in α-LiFeO2-γ-LiAlO2 composite was not observed when the two oxides were mechanically mixed. The α-LiFeO2-γ-LiAlO2 composite also exhibits O2- or/and H+ ionic conduction which was confirmed through H2/air fuel cell measurements. An exceptionally high conductivity of 0.50 S cm-1 at 650°C was observed under H2/air fuel cell conditions. This provides a new approach to discover novel ionic conductors from composite materials derived from electronic conductors.

  • Item type:Article
    ID code:57676
    Dates:
    Date
    Event
    12 January 2015
    Published
    13 November 2014
    Published Online
    Notes:This is the peer reviewed version of the following article: Lan, R., & Tao, S. (2015). High ionic conductivity in a LiFeO2-LiAlO2 composite under H2/air fuel cell conditions. Chemistry - A European Journal , 21(3), 1350-1358, which has been published in final form at http://dx.doi.org/10.1002/chem.201404476. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving
    Keywords:composites, electrochemistry, electronic conductors, ionic conductor, oxygen ion conductor, Chemistry, Chemistry(all)
    Subjects:Science > Chemistry
    Department:University of Strathclyde > University of Strathclyde
    Faculty of Engineering > Chemical and Process Engineering
    Depositing user: Pure Administrator
    Date deposited:06 Sep 2016 08:15
    Last modified:10 May 2022 00:18
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/57676
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