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Metal oxide/sulfur composite cathodes for room temperature lithium-sulfur and sodium-sulfur batteries

thesis
posted on 07.06.2021, 02:33 by Arnab Ghosh
Alkali metal-sulfur batteries (such as Li-S and Na-S batteries) theoretically can store 3-5 times higher energy-density in comparison to commercial lithium-ion batteries. However, alkali metal-sulfur batteries are plagued with a fundamental problem of gradual dissolution of polysulfide intermediates into the liquid electrolyte from the cathode, which causes inferior cycling stability. My dissertation describes development of various metal oxide/sulfur composite cathodes to overcome the polysulfide dissolution issue. Metal oxides could immobilize the polysulfide intermediates through strong chemical interaction and thus control their gradual dissolution into. Several characterization techniques are employed to understand the chemical interaction between different metal oxides and the intermediate polysulfides.

History

Campus location

Australia

Principal supervisor

Douglas MacFarlane

Additional supervisor 1

Sagar Mitra

Year of Award

2021

Department, School or Centre

School of Chemistry

Additional Institution or Organisation

IITB-Monash

Course

Doctor of Philosophy

Degree Type

Doctorate

Faculty

Faculty of Science

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