About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage VII
|
Presentation Title |
Coating Yeast-derived Carbon Nanotubes on Separators to Suppress Li-S Battery Shuttle Effect |
Author(s) |
Jiajun He, Zan Gao, Xiaodong Li |
On-Site Speaker (Planned) |
Xiaodong Li |
Abstract Scope |
Lithium-sulfur (Li-S) battery is an appealing energy storage technology because of its superior theoretical energy density, natural friendliness, and low cost over Li-ion battery. However, Li-S batteries often suffer from fast capacity decay, low energy density, and short lifespan due to the shuttle effect from polysulfides. Hybridizing sulfur with carbonaceous materials has been proven to be effective in solving these challenges and thus improving Li-S battery performance. In this work, yeast as a low-cost, renewable biocatalyst was used to grow carbon nanotubes (CNTs), which was then coated on the separator in a Li-S battery to suppress the shuttle effect of polysulfides. The Li-S cell with the CNT coated separator exhibited significantly improved performance at high current density with an initial high specific capacity of 980 mA h g-1 and a well-retained specific capacity of ~450 mA h g-1 after 850 cycles. |
Proceedings Inclusion? |
Planned: |
Keywords |
Energy Conversion and Storage, Nanotechnology, Surface Modification and Coatings |