title: All-in-One Shape-Adaptive Self-Charging Power Package for Wearable Electronics.
abstract: Recently, a self-charging power unit consisting of an energy harvesting device and an energy storage device set the foundation for building a self-powered wearable system. However, the flexibility of the power unit working under extremely complex deformations (e.g., stretching, twisting, and bending) becomes a key issue. Here, we present a prototype of an all-in-one shape-adaptive self-charging power unit that can be used for scavenging random body motion energy under complex mechanical deformations and then directly storing it in a supercapacitor unit to build up a self-powered system for wearable electronics. A kirigami paper based supercapacitor (KP-SC) was designed to work as the flexible energy storage device (stretchability up to 215%). An ultrastretchable and shape-adaptive silicone rubber triboelectric nanogenerator (SR-TENG) was utilized as the flexible energy harvesting device. By combining them with a rectifier, a stretchable, twistable, and bendable, self-charging power package was achieved for sustainably driving wearable electronics. This work provides a potential platform for the flexible self-powered systems.
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.|Department of Applied Physics, Chongqing University , Chongqing 400044, China.
authors.forename: Hengyu
authors.initials: H
authors.lastname: Guo
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.|Department of Chemical Engineering, National Taiwan University of Science and Technology , Taipei 10607, Taiwan.
authors.forename: Min-Hsin
authors.initials: MH
authors.lastname: Yeh
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.
authors.forename: Ying-Chih
authors.initials: YC
authors.lastname: Lai
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.
authors.forename: Yunlong
authors.initials: Y
authors.lastname: Zi
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.
authors.forename: Changsheng
authors.initials: C
authors.lastname: Wu
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Wen
authors.affiliation: Department of Applied Physics, Chongqing University , Chongqing 400044, China.
authors.forename: Chenguo
authors.initials: C
authors.lastname: Hu
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.|Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences , National Center for Nanoscience and Technology (NCNST), Beijing 100083, P. R. China.
authors.forename: Zhong Lin
authors.initials: ZL
authors.lastname: Wang
keywords: kirigami; self-charging power package; supercapacitors; triboelectric nanogenerators; wearable electronics