A robust aqueous-processable polymer binder for long-life, high-performance lithium sulfur battery

Yi, Huan1,2; Lan, Tu3,4; Yang, Yu1,5; Zeng, Hongbo3; Zhang, Tian1; Tang, Tian4; Wang, Chaoyang2; Deng, Yonghong1

2019-09

10.1016/j.ensm.2018.12.009

Energy Storage Materials   影响因子和分区

2405-8297

The development of lithium sulfur batteries (LSBs) has significantly suffered from the shuttle of lithium polysulfides (LiPS) and drastic volume change of the active materials during cycling processes. The eco-friendly manufacturing of electrodes based on aqueous slurries is highly desirable for practical applications. To address these challenging issues, a novel aqueous-processable polymer, chitosan sulfate ethylamide glycinamide (CSEG), has been developed as the binder for sulfur cathode. The dual-amide structures endow the CSEG with superior LiPS-trapping capability to impede the diffusion and shuttle of LiPS in electrolyte. The CSEG-based sulfur cathodes demonstrate remarkable cycling performances at 1 C for 700 cycles and 6 C for 450 cycles, with only 0.049%, 0.0895% capacity fading per cycle, respectively. More importantly, the cathode achieves excellent rate performance with a capacity of 194.4 mAh g(-1) at an ultrahigh current density of 40.26 mA cm(-2) (20 C), which takes only 21 s for one charge or discharge process. The electrochemical performance of the novel CSEG binder, as demonstrated in this work, is superior to all previously reported aqueous-processable binders for sulfur cathode. Such a breakthrough will greatly improve the development of eco-friendly sulfur cathode, paving new ways for the practical application of next-generation LSBs.

Lithium-sulfur battery Sulfur cathode Aqueous-processable Polymer binder High performance

SCI ; EI

英语

第一 ; 通讯

Fundamental Research Foundation of Shenzhen[JCYJ20170412153424150]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000484341600006

ELSEVIER

20192907206804

Amides ; Binders ; Cathodes ; Electric discharges ; Electrolytes ; Environmental protection ; Lithium batteries ; Lithium compounds ; Polymers ; Sulfur compounds

Environmental Impact and Protection:454.2 ; Electricity: Basic Concepts and Phenomena:701.1 ; Primary Batteries:702.1.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Organic Compounds:804.1 ; Polymeric Materials:815.1

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.South China Univ Technol, Res Inst Mat Sci, Guangzhou 510640, Guangdong, Peoples R China
3.Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada
4.Univ Alberta, Dept Mech Engn, Edmonton, AB T6G 1H9, Canada
5.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China

Yi, Huan,Lan, Tu,Yang, Yu,et al. A robust aqueous-processable polymer binder for long-life, high-performance lithium sulfur battery[J]. Energy Storage Materials,2019,21:61-68.

Yi, Huan.,Lan, Tu.,Yang, Yu.,Zeng, Hongbo.,Zhang, Tian.,...&Deng, Yonghong.(2019).A robust aqueous-processable polymer binder for long-life, high-performance lithium sulfur battery.Energy Storage Materials,21,61-68.

Yi, Huan,et al."A robust aqueous-processable polymer binder for long-life, high-performance lithium sulfur battery".Energy Storage Materials 21(2019):61-68.