An Ultraflexible Silicon-Oxygen Battery Fiber with High Energy Density

Ye Zhang; Yiding Jiao; Lijun Lu; Lie Wang; Taiqiang Chen; Huisheng Peng

doi:10.1002/anie.201707840

An Ultraflexible Silicon-Oxygen Battery Fiber with High Energy Density

Angew Chem Int Ed Engl. 2017 Oct 23;56(44):13741-13746. doi: 10.1002/anie.201707840. Epub 2017 Oct 2.

Authors

Ye Zhang¹, Yiding Jiao¹, Lijun Lu², Lie Wang¹, Taiqiang Chen¹, Huisheng Peng¹

Affiliations

¹ State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai, 200438, China.
² College of Materials Science and Engineering and The Key Laboratory of Material Processing and Mold of Ministry of Education, Zhengzhou University, Zhengzhou, China.

PMID: 28940534
DOI: 10.1002/anie.201707840

Abstract

To satisfy the rapid development of portable and wearable electronics, it is highly desired to make batteries with both high energy densities and flexibility. Although some progress has been made in recent decades, the available batteries share critical problems of poor energy storage capacity and low flexibility. Herein, we have developed a silicon-oxygen battery fiber with high energy density and ultra-high flexibility by designing a coaxial architecture with a lithiated silicon/carbon nanotube hybrid fiber as inner anode, a polymer gel as middle electrolyte and a bare carbon nanotube sheet as outer cathode. The fiber showed a high energy density of 512 Wh kg^-1 and could effectively work after bending for 20 000 cycles. These battery fibers have been further woven into flexible textiles for a large-scale application.

Keywords: batteries; carbon nanotube fibers; electrochemistry; energy storage; wearable electronic devices.

Publication types

Research Support, Non-U.S. Gov't