Search

Your search keyword '"Sohn, Keun"' showing total 196 results
Start Over Author "Sohn, Keun"
196 results on '"Sohn, Keun"'

14. Integrated Structures of Silicon/CNTs/Graphite Composite as an Advanced Li‐Metal‐Free Anode for Li‐Sulfur Batteries.

Author

Nulu, Arunakumari, Nulu, Venugopal, and Sohn, Keun Yong

Subjects
GRAPHITE composites, MULTIWALLED carbon nanotubes, LITHIUM sulfur batteries, ANODES, ENERGY density, SHORT circuits, ALUMINUM foam, ELECTRIC charge
Abstract

Silicon (Si) is considered an alternative anode material for Li‐S batteries considering its high theoretical capacity of 3590 mAh g−1 at room temperature, and advantageous to avoid unfavorable Li metal anode, which forms dendrites during the cell charging and discharging process causes short circuits. Here in this study, we have prepared a nanocomposite anode comprising Si nanoparticles, multi‐walled carbon nanotubes (MCNTs), and graphite (G) by low‐temperature annealing approach and studied their electrochemical characteristics by combining with sulfur cathodes into Si‐S full cells in ether‐based liquid electrolytes. The prepared Si‐S battery system exhibits stable electrochemical properties with long cycle life. The fabricated full cell delivered specific capacities of 328 mAh g−1 at 0.1 C, and 243 mAh g−1 at 0.5 C, with calculated energy densities of 542 and 473 Wh kg−1, respectively, without any cell failure. These results indicate that the integration of Si, MCNTs, and G is a promising approach to avoiding Li‐metal anodes and achieving high and stable capacities for Li‐S batteries. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results