V2O5 Textile Cathodes with High Capacity and Stability for Flexible Lithium-Ion Batteries

Yujing Zhu, Mei Yang, Qiyao Huang, Dongrui Wang, Ranbo Yu, Jiangyan Wang, Zijian Zheng, Dan Wang

    Research output: Journal article publicationJournal articleAcademic researchpeer-review

    69 Citations (Scopus)

    Abstract

    Textile-based energy-storage devices are highly appealing for flexible and wearable electronics. Here, a 3D textile cathode with high loading, which couples hollow multishelled structures (HoMSs) with conductive metallic fabric, is reported for high-performance flexible lithium-ion batteries. V2O5 HoMSs prepared by sequential templating approach are used as active materials and conductive metallic fabrics are applied as current collectors and flexible substrates. Taking advantage of the desirable structure of V2O5 HoMSs that effectively buffers the volume expansion and alleviates the stress/strain during repeated Li-insertion/extraction processes, as well as the robust flexible metallic-fabric current collector, the as-prepared fabric devices show excellent electrochemical performance and ultrahigh stability. The capacity retains a high value of 222.4 mA h g−1 at a high mass loading of 2.5 mg cm−2 even after 500 charge/discharge cycles, and no obvious performance degradation is observed after hundreds of cycles of bending and folding. These results indicate that V2O5 HoMSs/metallic-fabric cathode electrode is promising for highly flexible lithium-ion batteries.

    Original languageEnglish
    Article number1906205
    JournalAdvanced Materials
    Volume32
    Issue number7
    DOIs
    Publication statusPublished - 1 Feb 2020

    Keywords

    • cathodes
    • flexible electronics
    • hollow multishelled structures
    • lithium-ion batteries
    • metallic textiles

    ASJC Scopus subject areas

    • Materials Science(all)
    • Mechanics of Materials
    • Mechanical Engineering

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