Publication details

Authors: Epur, Rigved; Ramanathan, Madhumati; Datta, Moni K.; Hong, Dae Ho; Jampani, Prashanth H.; Gattu, Bharat; Kumta, Prashant N. 
Title: Scribable multi-walled carbon nanotube-silicon nanocomposites: a viable lithium-ion battery system 
Type: Journal Article 
Publisher: Nanoscale 
Year: 2015 
Start Page: 3504 
End Page: 3510 
DOI: 10.1039/C4NR04288C 
Abstract: A novel electrode fabrication technique involving a manual scribing action of vertically aligned silicon coated multiwall carbon nanotubes (VASCNTs) on a copper foil have been developed as a viable approach to Li-ion battery electrodes. The scribed electrodes were prepared without the use of any conductive additives and binders, and they were directly assembled in a coin cell. These 'binder-less' scribed Si-CNT electrodes exhibited a very high discharge capacity in excess of 3000 mA h g-1 and a low first cycle irreversible loss (FIR) (19%). In addition, the electrodes also showed good cyclability with capacity retention of 76% at the end of 50 cycles corresponding to a fade rate of 0.48% loss per cycle rendering the technique attractive for suitable Li-ion applications.