期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 7, 期 23, 页码 13948-13955出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta02711d
关键词
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资金
- National Natural Science Foundation of China [81870170, 51402203, 51703148, 61804103]
- Natural Science Foundation of Jiangsu Province of China [BK20170343]
- China Postdoctoral Science Foundation [2017M611901, 2017M610346]
- Science and Technology Program of Guangdong Province of China [2015B010131010]
- Guangdong Science and Technology Department [2017B030314026]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [18KJA535001, 14KJB150020]
- Fundamental Research Funds for the Central Universities [2232019D3-07]
- International Joint Laboratory for Advanced Fiber and Low-dimension Materials [18520750400]
- State Key Laboratory of Silicon Materials, Zhejiang University [SKL2018-03]
- Nantong Municipal Science and Technology Program [GY12017001]
- Joint International Research Laboratory of Carbon-Based Functional Materials and Devices
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University [KJS1803]
- Science and Technology Program of Suzhou [SYG201736]
- Collaborative Innovation Center of Suzhou Nano Science Technology
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- 111 Project
- Initial Research Funds for Young Teachers of Donghua University
Self-healable soft conductors, which can withstand certain degrees of deformation and can recover from damage spontaneously, are essential for wearable applications. In this work, a soft hydrogel based self-healing triboelectric nanogenerator (HS-TENG), which is highly deformable, and both mechanically and electrically self-healable, has been successfully fabricated from a poly(vinyl alcohol)/agarose hydrogel. The incorporation of photothermally active polydopamine particles and multiwalled carbon nanotubes (MWCNTs) allows the HS-TENG to be physically self-healed in similar to 1 min upon exposure to near-infrared (NIR) light. At the same time, the chemical self-healing of the HS-TENG can be triggered by water spraying at 25 degrees C when introducing water-active dynamic borate bonds into the hydrogel. The applicability of the HS-TENG as a soft energy device to harvest human motion energies has been demonstrated. By tapping the HS-TENG with various deformations, the rectified electricity can charge commercial LEDs with sustainable energy. Working in single-electrode mode, the electrical outputs of the HS-TENG in terms of short-circuit transferred charge (Q(sc)), open circuit voltage (V-oc) and short-circuit current (I-sc) reach similar to 32 nC, similar to 95 V and similar to 1.5 mu A, respectively, and remain stable even with 200% strain since the MWCNTs disperse evenly in the matrix and play the role of conductive fillers in the HS-TENG.
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