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Porous Ionic Network/CNT Composite Separator as a Polysulfide Snaring Shield for High Performance Lithium-Sulfur Battery.
Fan, Zhiwen; Tao, Jian; Peng, Shuting; Yang, Yumin; Stiernet, Pierre; Tang, Juntao; Wang, Yan; Pan, Chunyue; Gu, Shuai; Yuan, Jiayin; Han, Kai; Yu, Guipeng.
Affiliation
  • Fan Z; Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
  • Tao J; Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
  • Peng S; Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
  • Yang Y; State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China.
  • Stiernet P; Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, SE-10691, Sweden.
  • Tang J; Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
  • Wang Y; Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
  • Pan C; Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
  • Gu S; Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
  • Yuan J; Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, SE-10691, Sweden.
  • Han K; Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
  • Yu G; Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
Macromol Rapid Commun ; 44(24): e2300451, 2023 Dec.
Article in En | MEDLINE | ID: mdl-37795776
ABSTRACT
Lithium-sulfur (Li-S) battery features a high theoretical energy density, but the shuttle of soluble polysulfides between the two electrodes often results in a rapid capacity decay. Herein, a straightforward electrostatic adsorption strategy based on a cross-linked polyimidazolium separator as a snaring shield of polysulfides is reported, which suppresses the undesirable migration of polysulfides to the anode. The porous ionic network (PIN)-modified carbon nanotubes (CNTs) are successfully prepared and coated onto a commercial porous polypropylene membrane in a vacuum-filtration step. The favorable affinity of the imidazolium ring toward polysulfide via the polar interaction and the electrostatic effect of ions mitigates the undesirable shuttle of polysulfides in the electrolyte, improving the Li─S battery in terms of rate performance and cycling life. Compared to the reference PIN-free CNT-coated separator, the PIN/CNT-coated one has an increased initial capacity of 1.3 folds (up to 1394.8 mAh g-1 for PIN/CNT/PP-3) at 0.1 C.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Nanotubes, Carbon / Lithium Language: En Journal: Macromol Rapid Commun Year: 2023 Document type: Article Affiliation country: China
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Nanotubes, Carbon / Lithium Language: En Journal: Macromol Rapid Commun Year: 2023 Document type: Article Affiliation country: China