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Flexible carbon dots composite paper for electricity generation from water vapor absorption
- Source :
- Journal of Materials Chemistry A. 6:10639-10643
- Publication Year :
- 2018
- Publisher :
- Royal Society of Chemistry (RSC), 2018.
-
Abstract
- Harvesting energy from environmental moisture is a promising technique for sustainable electric power resource. Herein, a new scalable fabrication method for flexible moisture-electric energy transformation device by dispersing or direct printing carbon dots (CDs) on paper is reported. A facile strategy for self-establishing ionic gradient on both sides of the device by constructing an asymmetric structure (the side of device is encapsulated) is proposed, which avoids prior processing of the materials for building asymmetric functional groups. The carboxyl groups on CDs near the open side of the device ionize more protons than that near the closed side, resulting in a potential drop across the device due to the concentration difference of the released protons on the two sides. The device can produce a sustainable voltage of −40 mV for over 100 min at a fixed humidity value. In addition, the device responds to direct touching of a finger or human exhalation, thus indicating its great potential for applications in electronic skins and humidity sensors.
- Subjects :
- Materials science
Fabrication
Renewable Energy, Sustainability and the Environment
business.industry
Humidity
chemistry.chemical_element
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Electricity generation
chemistry
Optoelectronics
Energy transformation
General Materials Science
Electric power
0210 nano-technology
business
Carbon
Voltage drop
Voltage
Subjects
Details
- ISSN :
- 20507496 and 20507488
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Chemistry A
- Accession number :
- edsair.doi...........02dfa6aea6202f03b2ffc2c9b83b4c5d