Constructing a novel and safer energy storing system using a graphite cathode and a MoO3 anode

Nanda Gunawardhana, Gum Jae Park, Nikolay Kirilov Dimov, Arjun Kumar Thapa, Hiroyoshi Nakamura, Hongyu Wang, Tatsumi Ishihara, Masaki Yoshio

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    38 Citations (Scopus)

    Abstract

    A cell employing a graphite cathode and a molybdenum (VI) oxide (MoO 3) anode is investigated as a possible energy storage device. Graphite cathode allows raising the voltage well above the cathode materials of LIBs without causing safety issues. The bottom potential of this anode is 2.0 V vs. Li/Li+, which is well above the lithium plating potential. Pulse polarization experiment reveals that no lithium deposition occurs, which further enhances the safety of the graphite/MoO3 full cell. Charge/discharge mechanism of this system results from intercalation and de-intercalation of the PF6- in the cathode (KS-6) and Li+ in the anode (MoO3). This mechanism is supported by in situ X-ray diffraction data of the graphite/MoO3 cell recorded at various states of charge.

    Original languageEnglish
    Pages (from-to)7886-7890
    Number of pages5
    JournalJournal of Power Sources
    Volume196
    Issue number18
    DOIs
    Publication statusPublished - Sep 15 2011

    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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