Diatom Bio-Silica and Cellulose Nanofibril for Bio-Triboelectric Nanogenerators and Self-Powered Breath Monitoring Masks
Autor: | Hye Jung Youn, Il-Kwon Oh, Araz Rajabi-Abhari, Manmatha Mahato, Jeehee Lee, Jong-Nam Kim, Rassoul Tabassian, Haeshin Lee |
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Rok vydání: | 2020 |
Předmět: |
Male
Materials science Biocompatibility Composite number Nanofibers Nanoparticle Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Wearable Electronic Devices Electric Power Supplies Tensile Strength Animals Humans General Materials Science Cellulose Contact electrification Triboelectric effect Monitoring Physiologic Skin Diatoms Eucalyptus Masks Biomaterial Silicon Dioxide 021001 nanoscience & nanotechnology 0104 chemical sciences Breath Tests Rabbits Biocomposite 0210 nano-technology Energy harvesting |
Zdroj: | ACS Applied Materials & Interfaces. 13:219-232 |
ISSN: | 1944-8252 1944-8244 |
Popis: | The application of biodegradable and biocompatible materials to triboelectric nanogenerators (TENGs) for harvesting energy from motions of the human body has been attracting significant research interest. Herein, we report diatom bio-silica as a biomaterial additive to enhance the output performance of cellulose nanofibril (CNF)-based TENGs. Diatom frustules (DFs), which are tribopositive bio-silica having hierarchically porous three-dimensional structures and high surface area, have hydrogen bonds with CNFs, resulting in enhanced electron-donating capability and a more roughened surface of the DF-CNF composite film. Hence, DFs were applied to form a tribopositive composite film with CNFs. The DF-CNF biocomposite film is mechanically strong, electron-rich, low-cost, and frictionally rough. The DF-CNF TENG showed an output voltage of 388 V and time-averaged power of 85.5 mW/m2 in the contact-separation mode with an efficient contact area of 4.9 cm2, and the generated power was sufficient for instantaneous illumination of 102 light-emitting diodes. In addition, a cytotoxicity study and biocompatibility tests on rabbit skin suggested that the DF-CNF composite was biologically safe. Moreover, a practical application of the DF-CNF TENG was examined with a self-powered smart mask for human breathing monitoring. This study not only suggests high output performance of biomaterial-based TENGs but also presents the diverse advantages of the DFs in human body-related applications such as self-powered health monitoring masks, skin-attachable power generators, and tactile feedback systems. |
Databáze: | OpenAIRE |
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