Toward Flexible and Wearable Embroidered Supercapacitors from Cobalt Phosphides-Decorated Conductive Fibers

Jianfeng Wen, Bingang Xu, Jinyun Zhou

    Research output: Journal article publicationJournal articleAcademic researchpeer-review

    27 Citations (Scopus)

    Abstract

    Wearable supercapacitors (SCs) are gaining prominence as portable energy storage devices. To develop high-performance wearable SCs, the significant relationship among material, structure, and performance inspired us with a delicate design of the highly wearable embroidered supercapacitors made from the conductive fibers composited. By rendering the conductive interdigitally patterned embroidery as both the current collector and skeleton for the SCs, the novel pseudocapacitive material cobalt phosphides were then successfully electrodeposited, forming the first flexible and wearable in-plane embroidery SCs. The electrochemical measurements manifested that the highest specific capacitance was nearly 156.6 mF cm−2 (65.72 F g−1) at the current density of 0.6 mA cm−2 (0.25 A g−1), with a high energy density of 0.013 mWh cm−2 (5.55 Wh kg−1) at a power density of 0.24 mW cm−2 (100 W kg−1). As a demonstration, a monogrammed pattern was ingeniously designed and embroidered on the laboratory gown as the wearable in-plane SCs, which showed both decent electrochemical performance and excellent flexibility.[Figure not available: see fulltext.]

    Original languageEnglish
    Article number89
    JournalNano-Micro Letters
    Volume11
    Issue number1
    DOIs
    Publication statusPublished - 1 Oct 2019

    Keywords

    • Cobalt phosphide
    • Computerized embroidering
    • Conductive fiber
    • Interdigital pattern
    • Wearable supercapacitor

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Surfaces, Coatings and Films
    • Electrical and Electronic Engineering

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