Department of Physics

Indian Institute Of Technology Madras , Chennai

Experimental Condensed Matter Physics and Nanoscience: Metal–organic framework-based separator for lithium–sulfur batteries

Speaker : Arpita Ghosh

2016-11-17

Abstract :

Lithium sulfur (Li-S) battery has attracted immense attention because of the abundance, biocompatibility and high specific capacity of sulfur. Additionally, it can provide two or three times enhanced energy density over Lithium ion batteries. However, Li-S battery suffers a rapid capacity fading over cycling due to the shuttling of soluble polysulfides between electrodes. In order to minimize this shuttling issue, several surface modifications of electrode material have been investigated. In the present talk, I will discuss about a modified metal-organic framework (MOF) based separator for Li-S batteries in order to prevent the above mentioned problem. MOF-based separator acts as an ionic sieve in Li-S batteries, which selectively sieves Li+ ions while efficiently suppressing undesired polysulfides migrating to the anode side, which results in much lower capacity decay rate.

References:
[1] S. Bai, X. Liu, K. Zhu, S. Wu, H. Zhou, Metal–organic framework-based separator for lithium–sulfur batteries, Nat. Energy. 1 (2016) 16094. doi:10.1038/nenergy.2016.94.
[2] S. Bai, K. Zhu, S. Wu, Y. Wang, J. Yi, M. Ishida, H. Zhou, A long-life lithium–sulphur battery by integrating zinc–organic framework based separator, J. Mater. Chem. A. 4 (2016) 16812–16817. doi:10.1039/C6TA07337A.

Key Speaker Arpita Ghosh
Guests None
Place Seminar Room
Start Time 5:00 PM
Finish Time 6:00 PM
External Link None