Ethanol-assisted room-temperature rapid self-healing polydimethylsiloxane-polyurea/carbon composite elastomers for energy harvesters and smart sensors
文献情報
Hua Wang, Yanyan Liu, Wei Zhang, Xingyou Tian
Self-healing materials are widely used in flexible and stretchable electronic devices because of their capability to repair cracks or damages that occur during usage, thus extending their lifetime. In this work, self-healable polydimethylsiloxane-polyurea/carbon composite elastomers (CCF/PDMS) are prepared successfully via the design of multiple hydrogen bonds. The multiple hydrogen bonds formed between the urea groups of polymer chains and between the urea groups and the carboxyl/hydroxyl groups of the graphite/carboxylated carbon nanotube complex fillers (CCFs) endow CCF/PDMS with excellent recyclability, mechanical properties (687.9%, 1.02 MPa), and rapid ethanol-assisted self-healing properties (99.4% at room temperature for 3 h), which exceeds most of the reported polydimethylsiloxane-based composites. Besides, the mechanism of ethanol-assisted self-healing properties is investigated using in situ FTIR spectra, providing a new strategy for self-healing composites of hydrogen bonding systems. Significantly, CCF endows CCF/PDMS with impressive self-powered capability. The self-healing triboelectric nanogenerator (SH-TENG) with an area of 30 × 30 × 0.25 mm3 prepared from CCF/PDMS has a remarkable output (125 V, 11.9 μA) and can easily power 144 LEDs. The design strategy with excellent mechanical performance, ultrahigh self-healing properties, and remarkable self-powered capability can meet the wide applications of wearable flexible sensors, electronic skins, flexible robots, self-powered devices, etc.
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Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment














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