Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 908-914 |
| Number of pages | 7 |
| Journal | Materials Horizons |
| Volume | 4 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2017 Sept 1 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
All Science Journal Classification (ASJC) codes
- General Materials Science
- Mechanics of Materials
- Process Chemistry and Technology
- Electrical and Electronic Engineering
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