Hierarchical Assemblies of Carbon Nanotubes for Ultraflexible Li-Ion Batteries

Shahab Ahmad; Davor Copic; Chandramohan George; Michael De Volder

doi:10.1002/adma.201600914

Hierarchical Assemblies of Carbon Nanotubes for Ultraflexible Li-Ion Batteries

Adv Mater. 2016 Aug;28(31):6705-10. doi: 10.1002/adma.201600914. Epub 2016 May 17.

Authors

Shahab Ahmad¹, Davor Copic¹, Chandramohan George¹, Michael De Volder¹

Affiliation

¹ Institute for Manufacturing, Department of Engineering, University of Cambridge, 17 Charles Babbage Road, Cambridge, CB3 0FS, UK.

PMID: 27184630
DOI: 10.1002/adma.201600914

Abstract

The flexible batteries that are needed to power flexible circuits and displays remain challenging, despite considerable progress in the fabrication of such devices. Here, it is shown that flexible batteries can be fabricated using arrays of carbon nanotube microstructures, which decouple stress from the energy-storage material. It is found that this battery architecture imparts exceptional flexibility (radius ≈ 300 μm), high rate (20 A g(-1) ), and excellent cycling stability.

Keywords: Li-ion batteries; carbon nanotubes; flexible electrodes.