Synthesis and charge storage properties of templated LaMnO3-SiO2 composite materials

Graham W. Piburn, J. Tyler Mefford, Nicholas Zinni, Keith J. Stevenson, Simon M. Humphrey

    Research output: Contribution to journalArticlepeer-review

    13 Citations (Scopus)

    Abstract

    Mesoporous LaMnO3 with bulk surface areas in the range 225-300 m2 g−1 were prepared by direct overgrowth around the short-channel version of SBA-15 silica. The extent of LaMnO3 growth was found to be affected by the polarity of solvent system used to impregnate the SBA-15 with La3+ and Mn2+ precursors. The resulting LaMnO3-SiO2 composites were stable in refluxing NaOH, suggesting that the SiO2 was fully encapsulated. The composites were structurally characterized using a range of techniques including 2-D elemental mapping and Raman spectroscopy. The electrochemical behavior of the composites was tested for pseudocapacitance, which revealed normalized specific capacitances over 200 F g−1.

    Original languageEnglish
    Pages (from-to)977-984
    Number of pages8
    JournalDalton Transactions
    Volume46
    Issue number3
    DOIs
    Publication statusPublished - 2017

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