Journal
ELECTROCHIMICA ACTA
Volume 321, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2019.134678
Keywords
Lithium-sulfur battery; Polysulfur; Polymerization; Polyaniline; Sulfur-rich copolymer
Categories
Funding
- National Natural Science Foundation of China [51661008, 21766032]
- Zhejiang Provincial Natural Science Foundation of China [LQ19F040005]
- Jiaxing Public Welfare Research Program [2018AY11007]
Ask authors/readers for more resources
Due to their high energy density, lithium-sulfur (Li/S) batteries are among the most promising future power sources to replace modern lithium ion batteries, but low conductivity of sulfur-based cathodes significantly impedes their practical applications. In this study, novel conductive sulfur-rich copolymer/sulfur cathode materials, cp(S-g-PANI)/S (SPAS), are developed by grafting conductive polymer segments onto copolymer backbones to improve cell electrical conductivity and enhance lithium diffusion. In a Li/S cell, newly obtained composites deliver an initial discharge capacity of 1151 mAh g(sulfur)(-1) at a current density of 0.1C. Compared to composites lacking conductive polymer segments in the copolymer backbone, such as cp(S-AS)/S (SAS), SPAS provide better rate performance when current density is increased from 0.1C to 5C and exhibit good cycling stability at 0.5C. High capacity and cycling stability of SPAS as lithium-sulfur battery cathodes are ascribed to a synergetic effect between sufur-rich copolymer and conductive PANI. (C) 2019 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available