Oligoanilines as a suppressor of polysulfide shuttling in lithium–sulfur batteries
- Univ. of Texas, Austin, TX (United States). Materials Science and Engineering Program & Texas Materials Institute
The migration of small polysulfide (LiPS) chains through the porous polymeric separators seriously jeopardizes the cycle life and energy density of lithium–sulfur (Li–S) batteries. Herein, we present a new concept in which an organic oligoaniline, amine-capped aniline trimer (ACAT), serves as an effective suppressor of the LiPS migration in Li–S cells. The strong interaction between LiPS and ACAT facilitates the formation of bulky ACAT–LiPS complexes (organoLiPS complexes), which are then size-selectively sieved by the porous polymeric separators employed in Li–S cells. Thus, the addition of ACAT significantly ameliorates the electrochemical performances of Li–S batteries due to suppressed LiPS migration. This new concept offers a viable strategy to achieve practically viable Li–S batteries.
- Research Organization:
- Univ. of Texas, Austin, TX (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Grant/Contract Number:
- EE0007218
- OSTI ID:
- 1430185
- Alternate ID(s):
- OSTI ID: 1429330; OSTI ID: 1487267
- Journal Information:
- Materials Horizons, Vol. 4, Issue 5; ISSN 2051-6347
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Progress on the Critical Parameters for Lithium-Sulfur Batteries to be Practically Viable
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journal | May 2018 |
Current Status and Future Prospects of Metal–Sulfur Batteries
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journal | May 2019 |
Polyaniline: an effective suppressor against diffusion and dissolution of polysulfides in Li-S battery
|
journal | July 2019 |
Toward Better Lithium–Sulfur Batteries: Functional Non-aqueous Liquid Electrolytes
|
journal | August 2018 |
Inhibition of polysulfide diffusion in lithium–sulfur batteries: mechanism and improvement strategies
|
journal | January 2019 |
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