Manganese oxide with a card-house-like structure reassembled from nanosheets for rechargeable Li-air battery

Shintaro Ida, Arjun Kumar Thapa, Yuiko Hidaka, Yohei Okamoto, Maki Matsuka, Hidehisa Hagiwara, Tatsumi Ishihara

    Research output: Contribution to journalArticlepeer-review

    64 Citations (Scopus)

    Abstract

    Li-air batteries have attracted attention as a next generation secondary battery because of their potentials such as a high theoretical specific energy density. One of the main issues for the Li-air batteries is the development of a cathode oxygen electrode with high capacity and charge-discharge cycle stability. Here we report a manganese oxide with a card-house-like structure for the cathode oxygen electrode. The manganese oxide was synthesized by reassembling two-dimensional manganese oxide nanosheets. The cathode electrode containing the manganese oxide exhibited high catalytic activity for Li +/Li 2O x (x = 1, 2) redox reactions, and its discharge capacity was 1300-1500 mAh g -1 catalyst, which was higher than that of Li-air batteries using electrolytic MnO 2 as catalysts.

    Original languageEnglish
    Pages (from-to)159-164
    Number of pages6
    JournalJournal of Power Sources
    Volume203
    DOIs
    Publication statusPublished - Apr 1 2012

    All Science Journal Classification (ASJC) codes

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

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