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; University of Texas at Austin
- 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:
- 1429330
- Alternate ID(s):
- OSTI ID: 1430185; OSTI ID: 1487267
- Journal Information:
- Materials Horizons, Journal Name: Materials Horizons Journal Issue: 5 Vol. 4; ISSN 2051-6347; ISSN MHAOAL
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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