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Published on: June 23, 2018
Fiber-based flexible all-solid-state asymmetric supercapacitors for integrated photodetecting system
Xianfu Wang1, Bin Liu, Rong Liu
1Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), Wuhan, 430074 (China); State Key Laboratory for Superlattices and Microstructures, Institution of Semiconductors, Chinese Academy of Science, Beijing, 100083 (China).
Researchers developed flexible integrated nanodevices combining energy storage and light detection. These novel devices utilize cobalt oxide nanowires and graphene for enhanced performance in smart electronics.
Area of Science:
- Materials Science
- Nanotechnology
- Energy Storage
Background:
- Integrated nanodevices capable of energy storage are crucial for modern electronics.
- There is a growing demand for flexible and multifunctional devices.
Purpose of the Study:
- To fabricate all-solid-state asymmetric supercapacitors with integrated energy storage and optoelectronic detection capabilities.
- To develop flexible integrated systems for potential use in smart, self-powered electronics.
Main Methods:
- Growing cobalt oxide (Co3O4) nanowires on nickel fibers to create the positive electrode.
- Utilizing graphene as both the negative electrode and the light-sensitive material.
- Assembling fiber-based asymmetric supercapacitors and characterizing their electrochemical and photoresponsive properties.
Main Results:
- The integrated systems demonstrated improved energy storage capacity.
- Power density was significantly enhanced by 1860% through an expanded potential window (0-1.5 V).
- The devices exhibited excellent photoresponse to white light and superior flexibility.
Conclusions:
- The fabricated flexible integrated devices successfully combine energy storage and optoelectronic detection.
- These systems offer potential applications in advanced wearable and portable electronics.
- The enhanced performance and flexibility pave the way for self-powered sensory devices.
