title: Improving the Performance of Lithium-Sulfur Batteries by Employing Polyimide Particles as Hosting Matrixes.
abstract: Sulfur cathodes with four polyimide (PI) compounds as hosting matrixes have been prepared through a simple one-step approach. These four PIs-S composites exhibited higher sulfur utilization and better cycling stability than pure sulfur. At a current rate of 300 mA g(-1), the initial discharge capacities of PI-1S, PI-2S, PI-3S, and BBLS reached 1120, 1100, 1150, and 1040 mAh g(-1), respectively. After the 30th cycle, PI-1S, PI-2S, PI-3S, BBLS and pristine sulfur powder still remained discharge capacities of 715, 673, 729, 643, and 550 mAh g(-1). Especially, PI-1S and PI-3S cathodes exhibit excellent cycling stability with the discharge capacities of 522 and 574 mAh g(-1) at the 450th cycle, respectively.
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798, Singapore.
authors.forename: Pei-Yang
authors.initials: PY
authors.lastname: Gu
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798, Singapore.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798, Singapore.
authors.forename: Jian
authors.initials: J
authors.lastname: Xie
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798, Singapore.
authors.forename: Nursimaa
authors.initials: N
authors.lastname: Binte Ali
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798, Singapore.
authors.forename: Lina
authors.initials: L
authors.lastname: Nie
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798, Singapore.
authors.forename: Zhichuan J
authors.initials: ZJ
authors.lastname: Xu
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798, Singapore.|Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore.
authors.forename: Qichun
authors.initials: Q
authors.lastname: Zhang
keywords: high specific capacity; lithium−sulfur batteries; long lifetime; poly(ethylene glycol); polyimide