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Abstract:
Nowadays, self-charging devices using clean energy have raised the potential of portable and wearable power generators. Herein, a novel moisture-induced self-powered device based on metal-air redox reaction has been designed which can work under normal humidity conditions. Through bridging two asymmetric electrodes including a carbon nanotube/polyaniline composite electrode and a metal electrode by filter paper with CaCl2, the 1D planar device can be simply fabricated. A single device can provide an open-circuit voltage of over 1.3 V under normal humidity (40%) within 5 min (the maximum can be up to 1.42 V at 80% humidity) and the harvesting energy can be stored effectively. The device possesses great circularity and stability which can maintain steady and consistent output over at least 6 months. Due to the microelectrolyte, this device can prevent harmful leakage or deformation of the electrolyte completely. What is more, the device shows good extendibility. Three single devices in series using common electrodes can light up two light-emitting diodes. Besides its application potential in self-powered portable and wearable electronics, this device can provide a reference for utilization in medical devices due to the response signals under breath with different frequencies. A novel moisture-induced self-powered device can generate an open-circuit voltage exceeding 1.4 V within 5 min. It has simple 1D planar centimeter-sized structure. Larger open-circuit voltage can be achieved by integrating more devices in series. It can show the response signals at different respiratory frequencies and patterns from human breath.image (c) 2024 WILEY-VCH GmbH
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ENERGY TECHNOLOGY
ISSN: 2194-4288
Year: 2024
Issue: 4
Volume: 12
3 . 6 0 0
JCR@2023
CAS Journal Grade:4
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 0
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