Towards Ultrathick Battery Electrodes: Aligned Carbon Nanotube – Enabled Architecture (pages 533–537)
Kara Evanoff, Javed Khan, Alexander A. Balandin, Alexandre Magasinski, W. Jud Ready, Thomas F. Fuller and Gleb Yushin
Article first published online: 27 DEC 2011 | DOI: 10.1002/adma.201103044
Vapor deposition techniques were utilized to synthesize very thick (∼1 mm) Li-ion battery anodes consisting of vertically aligned carbon nanotubes coated with silicon and carbon. The produced anode demonstrated ultrahigh thermal (>400 W·m−1·K−1) and high electrical (>20 S·m−1) conductivities, high cycle stability, and high average capacity (>3000 mAh·gSi−1). The processes utilized allow for the conformal deposition of other materials, thus making it a promising architecture for the development of Li-ion anodes and cathodes with greatly enhanced electrical and thermal conductivities.