Different Cathode Architectures for Lithium-Selenium Batteries

Bhunia, Snehasis (2016) Different Cathode Architectures for Lithium-Selenium Batteries. Masters thesis, Indian Institute of Technology Hyderabad.

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Abstract

The Lithium-Sulfur battery has a high theoretical capacity (1675 mAh g-1) and sulfur is highly abundant in earth crust and is inexpensive. But due to some serious issues like low conductivity (5 x 10-28 S m-1), high rate of capacity fadingdue to polysulfide dissolution, long term cycling stability is not as good as that achieved in Lithium ion batteries. To alleviate some of these issues, the Lithium -Selenium battery was proposed. Although the theoretical gravimetric capacity (675 mAh g-1) is lower than sulfur for selenium, selenium has high conductivity (10 -3S m-1),and has a comparable volumetric capacity with sulfur. However, selenium also exhibits the shuttle effect, and polyselenides dissolution in the electrolyte during cycling, which leads to capacity fade.

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IITH Creators:
IITH CreatorsORCiD
Item Type: Thesis (Masters)
Uncontrolled Keywords: Lithium-Sulfur battery, theoretical gravimetric capacity, TD498
Subjects: ?? sub5.8 ??
Divisions: Department of Chemistry
Depositing User: Library Staff
Date Deposited: 03 May 2016 07:03
Last Modified: 03 May 2016 07:03
URI: http://raiith.iith.ac.in/id/eprint/2308
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