Performance-Enhancing Asymmetric Separator for Lithium-Sulfur Batteries.
| Title: | Performance-Enhancing Asymmetric Separator for Lithium-Sulfur Batteries. |
|---|---|
| Authors: | Conder J; Electrochemistry Laboratory and ‡Laboratory of Biomolecular Research, Paul Scherrer Institute , CH-5232 Villigen, Switzerland.; Forner-Cuenca A; Electrochemistry Laboratory and ‡Laboratory of Biomolecular Research, Paul Scherrer Institute , CH-5232 Villigen, Switzerland.; Gubler EM; Electrochemistry Laboratory and ‡Laboratory of Biomolecular Research, Paul Scherrer Institute , CH-5232 Villigen, Switzerland.; Gubler L; Electrochemistry Laboratory and ‡Laboratory of Biomolecular Research, Paul Scherrer Institute , CH-5232 Villigen, Switzerland.; Novák P; Electrochemistry Laboratory and ‡Laboratory of Biomolecular Research, Paul Scherrer Institute , CH-5232 Villigen, Switzerland.; Trabesinger S; Electrochemistry Laboratory and ‡Laboratory of Biomolecular Research, Paul Scherrer Institute , CH-5232 Villigen, Switzerland. |
| Source: | ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2016 Jul 27; Vol. 8 (29), pp. 18822-31. Date of Electronic Publication: 2016 Jul 15. |
| Publication Type: | Journal Article |
| Language: | English |
| Journal Info: | Publisher: American Chemical Society Country of Publication: United States NLM ID: 101504991 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1944-8252 (Electronic) Linking ISSN: 19448244 NLM ISO Abbreviation: ACS Appl Mater Interfaces Subsets: PubMed not MEDLINE |
| Imprint Name(s): | Original Publication: Washington, D.C. : American Chemical Society |
| Abstract: | Asymmetric separators with polysulfide barrier properties consisting of porous polypropylene grafted with styrenesulfonate (PP-g-PLiSS) were characterized in lithium-sulfur cells to assess their practical applicability. Galvanostatic cycling at different C-rates with and without an electrolyte additive and cyclic voltammetry were used to probe the electrochemical performance of the cells with the PP-g-PLiSS separators and to compare it with the performance of the cells utilizing state-of-the-art separator, Celgard 2400. Overall, it was found that regardless of the applied cycling rate, the use of the grafted separators greatly enhances the Coulombic efficiency of the cell. An appropriate Li-exchange-site (-SO3(-)) concentration at and near the surface of the separator was found to be essential to effectively suppress the polysulfide shuttle without sacrificing the Li-ion mobility through the separator and to improve the practical specific charge of the cell. |
| Contributed Indexing: | Keywords: Li−S battery; grafted separators; polysulfide rejection; polysulfide shuttle control; separators |
| Entry Date(s): | Date Created: 20160702 Date Completed: 20180718 Latest Revision: 20180718 |
| Update Code: | 20260130 |
| DOI: | 10.1021/acsami.6b04662 |
| PMID: | 27367443 |
| Database: | MEDLINE |
Journal Article