Lithium insertion into manganese dioxide electrode in MnO 2/Zn aqueous battery Part II. Comparison of the behavior of EMD and battery grade MnO 2 in Zn|MnO 2| aqueous LiOH electrolyte

Manickam Minakshi*, Pritam Singh, Tourna B. Issa, Stephen Thurgate, Roland De Marco

*Corresponding author for this work

    Research output: Contribution to journalArticle

    33 Citations (Scopus)

    Abstract

    A comparative study of the cathodic behavior of electrolytic manganese dioxide (HMD) and chemically prepared battery grade manganese dioxide (BGM) in Zn|MnO 2| aqueous lithium hydroxide (LiOH) cells has been carried out. The X-ray diffraction (XRD), infrared spectra (IR), thermo gravimetric analysis (TGA) and scanning electron microscope (SEM) investigations showed that the two materials had different phase compositions, water content and particle sizes. The cells with BGM had a higher open circuit voltage (OCV) and discharged at higher voltages as compared to those with EMD. The discharge capacity of BGM was lower compared to that of EMD. On discharge both the materials produced same phase i.e. lithium intercalated manganese dioxide (Li xMnO 2). This was also confirmed through X-ray photoelectron spectroscopy (XPS) investigation of the discharged products.

    Original languageEnglish
    Pages (from-to)319-322
    Number of pages4
    JournalJournal of Power Sources
    Volume138
    Issue number1-2
    DOIs
    Publication statusPublished - 15 Nov 2004

    Keywords

    • Battery behavior
    • Comparison
    • Lithium insertion

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