The development of flexible electronics and equipment attracts significant interests in recent years. It is of great importance to develop flexible and wearable energy storage devices for wearable and portable devices. Carbon nanomaterials have large surface area, good conductivity and excellent mechanical and chemical stability, enabling their applications in high performance energy conversion and energy storage devices. In this talk, I will present fiber-shaped ultra-stretchable and flexible supercapacitor made of carbon nanotube fibers, film-shaped stretchable supercapacitors and flexible Zn-air batteries using stretchable graphitized natural fabrics as electrodes. The ultra-stretchable wire-shaped supercapacitor was made by winding two carbon nanotube@graphene@MnO2 fibers around a superelastic core fiber. The supercapacitor can sustain tensile strain up to 850%, which is hitherto the highest value, while keeping stable electrochemical performance. We further demonstrated that there devices can be assembled with carbon-based flexible sensors into wearable smart systems. These strategy paves new ways for the fabrication of high performance wearable energy storage devices and flexible electronics.

References:

• Huimin Wang, Chunya Wang, Muqiang Jian, Qi Wang, Kailun Xia, Zhe Yin, Mingchao Zhang, Xiaoping Liang, Yingying Zhang*. Superelastic Wire-shaped Supercapacitor Sustaining 850% Tensile Strain Based on Carbon Nanotube@Graphene Fiber. Nano Research 2017 1007/s12274-017-1782-1
• Chunya Wang, Mingchao Zhang, Kailun Xia, Xueqin Gong, Huimin Wang, Zhe Yin, Baolu Guan, and Yingying Zhang*. Intrinsically Stretchable and Conductive Textile by a Scalable Process for Elastic Wearable Electronics. ACS Appl. Mater. Interfaces2017, 9 (15), 13331–13338.
• Mingchao Zhang, Chunya Wang; Xiaoping Liang, Zhe Yin, Kailun Xia, Huimin Wang, Muqiang Jian, Yingying Zhang. Weft-knitted fabric for highly-stretchable and low-voltage wearable heater. Advanced Electronic Materials DOI 10.1002/aelm.201700193
• Chunya Wang, Xiao Li, Enlai Gao, Muqiang Jian, Kailun Xia, Qi Wang, Zhiping Xu, Tianling Ren, Yingying Zhang*. Carbonized Silk Fabric for Ultra-stretchable, Highly Sensitive and Wearable Strain Sensors. Advanced Materials 2016, 28, 6640.