Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 6, Issue 9, Pages 2698-2705Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ee40515j
Keywords
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Funding
- Drexel-Penn NSF-IGERT Fellowship [DGE-0654313]
- Department of Defense (DoD) through the National Defense Science & Engineering Graduate Fellowship (NDSEG) Program
- National Science Foundation [CHE-0924570]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences
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The field of energy textiles is growing but continues to face two main challenges: (1) flexible energy storage does not yet exist in a form that is directly comparable with everyday fabrics including their feel, drape and thickness, and (2) in order to produce an energy textile as part of a garment, it must be fabricated in a systematic manner allowing for multiple components of e-textiles to be integrated simultaneously. To help address these issues, we have developed textile supercapacitors based on knitted carbon fibers and activated carbon ink. We show capacitances as high as 0.51 F cm(-2) per device at 10 mV s(-1), which is directly comparable with those of standard activated carbon film electrodes tested under the same conditions. We also demonstrate the performance of the device when bent at 90 degrees, 135 degrees, 180 degrees and when stretched. This is the first report on knitting as a fabrication technique for integrated energy storage devices.
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