Research ArticleWEARABLE TECHNOLOGY

Self-powered textile for wearable electronics by hybridizing fiber-shaped nanogenerators, solar cells, and supercapacitors

See allHide authors and affiliations

Science Advances  26 Oct 2016:
Vol. 2, no. 10, e1600097
DOI: 10.1126/sciadv.1600097
  • Fig. 1 Schematic of the self-charging power textile.

    Scheme of a fiber-based self-charging power system, which is made of an F-TENG, an F-DSSC as an energy-harvesting fabric, and an F-SC as an energy-storing fabric.

  • Fig. 2 Structural design of an F-DSSC.

    (A) Schematic diagram and (B) photograph (scale bar, 1 cm) of a single F-DSSC, consisting of N719 dye–adsorbed TiO2 nanotube arrays on a Ti wire as a working electrode and a Pt-coated carbon fiber as a CE in an I/I3-based electrolyte. (C) Low-magnification and (D) high-magnification SEM images of the TiO2 nanotube arrays on the Ti wire [scale bars, 100 μm (C) and 100 nm (D)]. (E) J-V curve of a single F-DSSC (inset shows the Nyquist plot of an F-DSSC, which is measured under VOC with frequencies ranging from 100 kHz to 10 MHz). (F) Normalized current density of the single F-DSSC at different bending angles (0° to 180°) (insets show the photograph of a single F-DSSC at different bending angles).

  • Fig. 3 Structural design of an F-SC.

    (A) Schematic diagram and (B) photograph (scale bar, 1 cm) of a single F-SC, consisting of two carbon fibers coated with RuO2·xH2O in the H3PO4/PVA electrolyte. (C) Low-magnification and (D) high-magnification SEM images of the RuO2·xH2O–coated carbon fiber electrode [scale bars, 100 μm (C) and 5 μm (D)]. (E) CV of the single F-SC at different scanning rates (10 to 100 mV/s). (F) GCD curve of a single F-SC at different current densities (100 to 1000 μA). (G) Cycling performance of a single F-SC unit. (H) CV curves of the single F-SC at different bending angles (0° to 180°).

  • Fig. 4 Structural design of an F-TENG.

    (A) Schematic diagram and (B) photograph (scale bar, 1 cm) of a pair of single F-TENG units, consisting of a Cu-coated EVA tube and a PDMS-covered Cu-coated EVA tube. (C) Schematic illustration of the working mechanism of the F-TENG under parallel contact-separation motion. (D) Electrical outputs of a pair of F-TENG units, which included VOC, ISC, and QSC, at various motion frequencies (1 to 5 Hz). (E) Photograph of the wearable self-charging powered textile with knitting patterns of 1 × 1, 3 × 3, and 5 × 5 nets (all scale bars, 1 cm). (F) Triboelectric output performance of the three network textiles. (G) The electric resistance of the Cu-coated EVA tube at different bending angles (0° to 180°) (insets show the photograph of the Cu-coated EVA tube at different bending angles).

  • Fig. 5 Demonstration of the self-charging powered textile and its operation under outdoor and indoor conditions.

    Photograph of the self-charging power textile woven with F-TENGs, F-DSSCs, and F-SCs under outdoor (A), indoor (B), and movement (C) conditions. (D) Circuit diagram of the self-charging powered textile for wearable electronics (WE). (E) Charging curve of the F-DSSC and the F-TENG, where the light blue–shaded area corresponds to the charging curve of the F-DSSC and the light red–shaded area corresponds to the charging curve of the F-DSSC–F-TENG hybrid. The top left corner inset shows an enlarged curve during the F-DSSC charging period, and the bottom right corner inset shows the rectified ISC of F-TENGs. (F) Normalized QSC values of F-TENGs, ISC values of F-DSSCs, and capacitances of F-SCs bent between 0° and 180° for 1000 cycles. Insets show the photographs of the two final bending statuses (both scale bars, 1 cm). a.u., arbitrary units.

Supplementary Materials

  • Supplementary material for this article is available at http://advances.sciencemag.org/cgi/content/full/2/10/e1600097/DC1

    fig. S1. XRD pattern of the anodized TiO2 nanotube arrays on a Ti wire.

    fig. S2. SEM images of the pure carbon fiber and the Pt-coated carbon fiber.

    fig. S3. J-V curve of an F-DSSC based on bare carbon fibers.

    fig. S4. Dependence of an F-DSSC at different incident light angles.

    fig. S5. XRD pattern of the RuO2·xH2O.

    fig. S6. CV and GCD curves of an F-SC based on bare carbon fibers.

    fig. S7. VOC outputs of F-TENG network textiles.

    fig. S8. I-V curve of three F-DSSCs with in-series connection.

    movie S1. Flexibility test of Cu-coated EVA tubing.

    movie S2. Stability test of hybridized self-charging power textile.

  • Supplementary Materials

    This PDF file includes:

    • fig. S1. XRD pattern of the anodized TiO2 nanotube arrays on a Ti wire.
    • fig. S2. SEM images of pure carbon fiber and Pt-coated carbon fiber.
    • fig. S3. J-V curve of an F-DSSC based on bare carbon fibers.
    • fig. S4. Dependence of an F-DSSC under different incident light angles.
    • fig. S5. XRD pattern of the RuO2•xH2O.
    • fig. S6. CV and GCD curves of an F-SC based on bare carbon fibers.
    • fig. S7. VOC outputs of F-TENG network textiles.
    • fig. S8. I-V curve of three F-DSSCs in series connection.

    Download PDF

    Other Supplementary Material for this manuscript includes the following:

    • movie S1 (.avi format). Flexibility test of Cu-coated EVA tubing.
    • movie S2 (.avi format). Stability test of hybridized self-charging power textile.

    Files in this Data Supplement:

Navigate This Article