Revised Manuscript_Nano Energy (1).pdf (4.57 MB)
Natural silk-composite enabled versatile robust triboelectric nanogenerators for smart applications
journal contributionposted on 2021-11-26, 11:06 authored by Bhaskar Dudem, Sontyana Adonijah Graham, Ishara DharmasenaIshara Dharmasena, S. Ravi P. Silva, Jae Su Yu
Strategies to maximize the surface charge density across triboelectric layers while protecting it from humidity are crucial in employing triboelectric nanogenerators (TENGs) for commercial/real-time applications. Herein, for the first time, we propose the utility of crystalline silk microparticles (SMPs) to improve the surface charge density in materials like polyvinyl alcohol to realise its applicability for TENG devices. Moreover, these SMPs are extracted from discarded Bombyx mori silkworm cocoons by facile, inexpensive, and single-step alkaline-hydrolysis treatment. We examine the performance of these composites with counter-materials composed of waste PTFE plastic cups to show reuse in recycled products. The processing cost of TENG developed from recycled materials is not only low but eco-friendly. The TENG performance as a function of the concentration of SMPs is investigated and compared with the composite's work-function and surface-potentials, with the distance-dependent electric field theoretical model employed to optimize the performance. Consequently, the optimized TENG exhibits maximum output voltage, current, charge, and power density of ∼280 V, 17.3 μA, 32.5 nC, and 14.4 W·m−2, respectively, creating a highly competitive energy harvester that can conform to the rigorous needs of wearables and mobile applications. Furthermore, the fully packaged silicone rubber device protects it from humidity and enables the device utility for practical applications with a soft, comfortable, and skin-friendly interface.
National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2018R1A6A1A03025708 and No. 2020R1A2B5B01002318)
Energy Harvesting Triboelectric Nano-Generators for the Internet-of-Things
Engineering and Physical Sciences Research CouncilFind out more...
- Mechanical, Electrical and Manufacturing Engineering
Published inNano Energy
- AM (Accepted Manuscript)
Rights holder© Elsevier
Publisher statementThis paper was accepted for publication in the journal Nano Energy and the definitive published version is available at https://doi.org/10.1016/j.nanoen.2021.105819
DepositorDr Ishara Dharmasena. Deposit date: 25 November 2021
CategoriesNo categories selected
Crystalline silk microparticlesHumid resistantPouch-like triboelectric nanogeneratorsTENG applicationsDistance-dependent electric fieldScience & TechnologyPhysical SciencesTechnologyChemistry, PhysicalNanoscience & NanotechnologyMaterials Science, MultidisciplinaryPhysics, AppliedChemistryScience & Technology - Other TopicsMaterials SciencePhysicsFUNCTIONALIZATIONFABRICATIONSENSORSOUTPUTFILMSBODYMacromolecular and Materials ChemistryMaterials EngineeringNanotechnology