Towards ultrathick battery electrodes: aligned carbon nanotube-enabled architecture.
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·g(Si) (-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.
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
Kara
K
Evanoff
Javed
J
Khan
Alexander A
AA
Balandin
Alexandre
A
Magasinski
W Jud
WJ
Ready
Thomas F
TF
Fuller
Gleb
G
Yushin
D004553:Electric Conductivity; D011211:Electric Power Supplies; D004566:Electrodes; D008094:Lithium / Q000737:chemistry; D037742:Nanotubes, Carbon / Q000737:chemistry*; D013499:Surface Properties
D037742:Nanotubes, Carbon; D008094:Lithium