Low-Cost and Environmentally Friendly Biopolymer Binders for L-S Batteries

Wang, Hui1,2,3; Zheng, Peitao4; Yi, Huan4; Wang, Yinyan2; Yang, Zhuohong1,5; Lei, Zhiwen2; Chen, Yukun3; Deng, Yonghong4; Wang, Chaoyang2; Yang, Yu1,4,5

2020-10-13

10.1021/acs.macromol.0c01576

MACROMOLECULES   影响因子和分区

0024-9297

1520-5835

Lithium-sulfur batteries (LSBs) have drawn tremendous attention for their superior theoretical energy density. Nevertheless, the "shuttle effect" originating from the dissolution and migration of lithium polysulfide (UPS) in electrolytes limits the cycling stability of LSBs. To deal with this challenge, a biopolymer network PPG with a three-dimensional (3D) cross-linked structure, on the basis of guar gum (GG), phytic acid (PA), and soy protein isolate (SPI), has been explored as a cathode binder for LSBs. The robust adsorption ability to capture LiPS presented by the PPG binder has been demonstrated through the ultraviolet-visible (UV-vis) measurement and further been certified by calculation with the density functional theory (DFT). Its outstanding mechanical and adhesion performance is also beneficial to sustain the integrality of sulfur electrodes during the cycle life test. PPG binder-based LSBs exhibit significant promotion in prolonged cycling tests with a 79.7% capacity retention after 700 cydes at 1 C. The capacity of PPG binder-based LSBs can still maintain 933.6 mAh g(-1) (at 0.1 C) after 50 cycles even with a high sulfur mass loading of 4.9 mg cm(-2). This result demonstrates the significance of a natural polymer in the design of a binder for a sulfur cathode to achieve LSBs with splendid cycling performance.

SCI ; EI

英语

NI期刊 ; NI论文

通讯

Science and Technology Program of Guangzhou[202002030307] ; Guangdong Basic and Applied Basic Research Foundation["2019A1515010595","2019A1515111030"] ; Key-Area Research and Development Program of Guangdong Province[2019B090908001] ; National Natural Science Foundation of China[21805127] ; Fundamental Research Program of Shenzhen[JCYJ2018030512351278] ; Science and Technology Foundation of Guangdong Province[2020A0505100051]

Polymer Science

Polymer Science

WOS:000597278800042

AMER CHEMICAL SOC

20204409436305

Binders ; Costs ; Lithium compounds ; Biomolecules ; Cathodes ; Density functional theory ; Design for testability ; Biopolymers ; Lithium batteries

Biological Materials and Tissue Engineering:461.2 ; Biology:461.9 ; Primary Batteries:702.1.1 ; Secondary Batteries:702.1.2 ; Biochemistry:801.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Polymeric Materials:815.1 ; Cost and Value Engineering; Industrial Economics:911 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

CHEMISTRY

Web of Science

1.South China Agr Univ, Coll Mat & Energy, Key Lab Biobased Mat & Energy, Minist Educ, Guangzhou 510642, Peoples R China
2.South China Univ Technol, Res Inst Mat Sci, Guangzhou 510640, Peoples R China
3.South China Univ Technol, Lab Adv Elastomer, Guangzhou 510640, Peoples R China
4.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
5.South China Agr Univ, Guangdong Lab Lingnan Modern Agr, Guangzhou 510642, Peoples R China

Wang, Hui,Zheng, Peitao,Yi, Huan,et al. Low-Cost and Environmentally Friendly Biopolymer Binders for L-S Batteries[J]. MACROMOLECULES,2020,53(19):8539-8547.

Wang, Hui.,Zheng, Peitao.,Yi, Huan.,Wang, Yinyan.,Yang, Zhuohong.,...&Yang, Yu.(2020).Low-Cost and Environmentally Friendly Biopolymer Binders for L-S Batteries.MACROMOLECULES,53(19),8539-8547.

Wang, Hui,et al."Low-Cost and Environmentally Friendly Biopolymer Binders for L-S Batteries".MACROMOLECULES 53.19(2020):8539-8547.