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Scalable textile manufacturing methods for fabricating triboelectric nanogenerators with balanced electrical and wearable properties
journal contribution
posted on 2022-10-21, 13:38 authored by KR Sanjaya Gunawardhana, Nandula D Wanasekara, Upul Wijayantha-Kahagala-Gamage, Ishara DharmasenaIshara DharmasenaTriboelectric nanogenerators (TENGs) are foreseen as a leading candidate to harvest mechanical energy from ambient sources such as human body movements. However, wearable TENGs, which are used for this purpose, require adequate wearability for long durations, in addition to sufficient electrical outputs. So far, it has been difficult to achieve this through the predominantly plastic-based wearable TENGs constructed using conventional nanogenerator fabrication methods. This Article evaluates the use of textile materials and scalable fabrication techniques to develop TENGs targeting balanced electrical and wearable properties. The fabrication process is conducted using yarn-coating, dip-coating, and screen-printing techniques, which are common textile manufacturing methods, and converted into fabrics using flat-bed knitting, resulting in TENGs with improved wearable and electrical performances. The electrical properties (open circuit voltage (Voc), short circuit current (Isc), and short circuit charge (Qsc)) and wearable properties (air permeability, stretch and recovery, and moisture management) of these structures are evaluated, during which the yarn-coated TENG resulted in maximum electrical outputs recording Voc ≈ 35 V, Isc ≈ 60 nA, and Qsc ≈ 12 nC, under mild excitations. In terms of wearability, the yarn-coated TENG again performed exceptionally during the majority of tests providing the best moisture management, air permeability (101 cm3/cm2/s), and stretch (∼75%), thus proving its suitability for wearable TENG applications.
Funding
Senate Research Committee (SRC) grant (SRC ST 2019/24) from the University of Moratuwa
National Research Council of Sri Lanka investigator driven grant (NRC 20-031)
EPSRC Doctoral Prize Fellowship from Loughborough University
Royal Academy of Engineering under the Research Fellowship scheme
ISCF Wave 1: (The JUICED Hub [Joint University Industry Consortium for Energy (Materials) and Devices Hub])
Department for Business, Energy and Industrial Strategy
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School
- Science
- Mechanical, Electrical and Manufacturing Engineering
Department
- Chemistry
Published in
ACS Applied Electronic MaterialsVolume
4Issue
2Pages
678 - 688Publisher
American Chemical Society (ACS)Version
- VoR (Version of Record)
Rights holder
© the authorsAcceptance date
2022-01-18Publication date
2022-01-26Copyright date
2022eISSN
2637-6113Publisher version
Language
- en
Depositor
Dr Ishara Dharmasena. Deposit date: 8 March 2022Usage metrics
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