Mg secondary batteries using nano-crystalline V2O5

R. Taniki, I. Honma

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    The V2O5 nano-crystal with an average diameter of 200 nm is prepared by a ball-milling with toluene and a calcination in air. Electrochemical properties of V2O5 nano-crystal for Li battery show that Li intercalation to V2O5 nano-crystal occurs reversibly and that the best condition of calcination temperature is 400°C. In the electrochemical test for Mg battery, Mg[TFSA]2/G3 electrolyte gives high discharge/charge capacities; 224/215 mAh g-1 at 3rd cycle, 180/177 mAh g"1 at 10th cycle, and 111/117 mAh g"1 at 30th cycle. An intercalation/dissociation of Mg2+ to/from layers of V2O5 nano-crystal is presumably controlled under a de-coordination/coordination of solvents from/to Mg2+. The intercalation of Mg2+ and a reduction of V2O5 are identified by XPS and XRD analyses. Extension of an interlayer distance from 5.75 À to 6.15 is observed by the intercalation of Mg2+.

    Original languageEnglish
    Title of host publicationBeyond Li-Ion Batteries
    EditorsJ. Muldoon, J. W. Choi, J. Chen, M. Yakovleva, H. Kim, J.-W. Lee, K. Kang, J. Lu, D. Im, Y.-M. Kang, P. Shirvanian, V. Di Noto, B. Key, S. Passerini
    PublisherElectrochemical Society Inc.
    Pages25-34
    Number of pages10
    Edition22
    ISBN (Electronic)9781607685395
    DOIs
    Publication statusPublished - 2016 Jan 1
    EventSymposium on Beyond Li-Ion Batteries - PRiME 2016/230th ECS Meeting - Honolulu, United States
    Duration: 2016 Oct 22016 Oct 7

    Publication series

    NameECS Transactions
    Number22
    Volume75
    ISSN (Print)1938-6737
    ISSN (Electronic)1938-5862

    Other

    OtherSymposium on Beyond Li-Ion Batteries - PRiME 2016/230th ECS Meeting
    CountryUnited States
    CityHonolulu
    Period16/10/216/10/7

    ASJC Scopus subject areas

    • Engineering(all)

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