Wearable fiberform hygroelectric generator. (November 2018)

• Record Type: Journal Article
• Authors: Shao, Changxiang; Gao, Jian; Xu, Tong; Ji, Bingxue; Xiao, Yukun; Gao, Chang; Zhao, Yang; Qu, Liangti
• Is Part Of: Nano energy. Volume 53(2018)
• Page Start: 698
• Page End: 705
• Publication Date: 2018-11
• Subjects: Fiberform power generator -- Graphene oxide -- Moisture -- Hygroelectric generator; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2018.09.043
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: It is of great significance to develop the power generator that can proactively produce energy and apply it into next-generation wearable and self-powered electronics. Here, we fabricate a novel graphene oxide (GO)-based coaxial fiber-shaped hygroelectric generator (FHEG). The electricity generation under humidity variation results from the directional movement of charged hydrogen ions from GO. Under 70% humidity change, the FHEG can provide a high power density of ~ 0.21 µW cm −1 . The energy output can be easily enhanced by simple connection in series/parallel manner. Moreover, FHEG exhibits the outstanding shaping engineering characteristic, which can be transferred into diverse shapes and architectures on demand. Its excellent compatibility with woven fabrics enables the form-factor of electronic devices to be wearable and portable. Impressively, the integrated FHEG device can power many practical devices, indicating its widespread application in self-powered electronics and systems. Graphical abstract: A fiber-shaped hygroelectric generator with excellent shaping engineering characteristic and good compatibility with woven fabrics has been developed, which provides a high power density of ~ 0.21 µW cm −1 under moisture stimulation, and offers tremendous potential in next-generation wearable and self-powered electronics and systems. fx1 Highlights: A wearable graphene oxide based fiber with coaxial structure produces electricity directly from directional migration of charged hydrogen ions under the humidity stimulation. The fiber generator achieves a high power density of ~ 0.21 µW cm −1 under the stimulation of 70% humidity. The voltage/current outputs can be further enhanced by simple connection in series/parallel manner to drive commercial electronics. The fiber generator shows excellent shaping engineering characteristic and high compatibility with woven fabrics.