Self-Healing Double-Cross-Linked Supramolecular Binders of a Polyacrylamide-Grafted Soy Protein Isolate for Li-S Batteries

Wang, Hui1,2; Wang, Yinyan1; Zheng, Peitao3,4,5; Yang, Yu3,6; Chen, Yukun2; Cao, Yuliang4,5; Deng, Yonghong3; Wang, Chaoyang1

2020-08-31

10.1021/acssuschemeng.0c02477

ACS Sustainable Chemistry & Engineering   影响因子和分区

2168-0485

With extremely high theoretical energy density, lithium-sulfur (Li-S) batteries have attracted abundant interest as a promising next-generation energy storage device. Polymer binders as an ingredient of cathodes are of great significance in pursuit of stabilized electrochemistry. Herein, we fabricate a self-healing, water-based, and doublecross-linked soy protein isolate (SPI)-polyacrylamide (PAM) binder for the sulfur cathode, which is facilely synthesized by copolymerization of methacrylated SPI and acrylamide. It was demonstrated that methacrylated SPI acted as a macro-cross-linker, combining with dynamic hydrogen bonding cross-linking from PAM, endowing the SPI-PAM polymer binder satisfactory bonding strength and excellent self-healing ability. Moreover, the SPI-PAM exhibits superior lithium polysulfide anchoring capability to impede the dissolution and diffusion of lithium polysulfides in an electrolyte. Li-S batteries with such a robust SPI-PAM binder can stabilize the charge and discharge for 400 cycles at a high rate of 6 C; the average specific capacity loss per cycle is only 0.0545%, and even at an ultrahigh current density of 20 C, the specific capacity still remains at 148.2 mA h g(-1). With a sulfur loading of 2.3 mg cm(-2), the SPI-PAM-based sulfur cathodes demonstrate remarkable cycling performances at 0.5 C for 200 cycles, and the capacity remains at 707.7 mA h g(-1). The kind of green binders from bioresources modified with PAM have a good application in high-energy density Li-S batteries.

soy protein isolate Li-S battery binder polyacrylamide self-healing

SCI ; EI

英语

通讯

Science and Technology Program of Guangzhou[202002030307] ; Natural Science Foundation of Guangdong Province[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]

Chemistry ; Science & Technology - Other Topics ; Engineering

Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical

WOS:000567778600009

AMER CHEMICAL SOC

20204209339252

Amides ; Biosynthesis ; Electrolytes ; Lithium compounds ; Lithium batteries ; Binders ; Crosslinking ; Polysulfides ; Lithium sulfur batteries ; Cathodes ; Hydrogen bonds ; Self-healing materials

Metals, Plastics, Wood and Other Structural Materials:415 ; Biotechnology:461.8 ; Electric Batteries and Fuel Cells:702 ; Primary Batteries:702.1.1 ; Secondary Batteries:702.1.2 ; Biochemistry:801.2 ; Physical Chemistry:801.4 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Organic Polymers:815.1.1 ; Synthetic Rubber:818.2.1

Web of Science

1.South China Univ Technol, Res Inst Mat Sci, Guangzhou 510640, Peoples R China
2.South China Univ Technol, Lab Adv Elastomer, Guangzhou 510640, Peoples R China
3.Southern Univ Sci & Technol, Guangdong Prov Key Lab Energy Mat Elect Power, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
4.Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Electrochem Power Sources, Wuhan 430072, Peoples R China
5.Wuhan Univ, Sauvage Ctr Mol Sci, Wuhan 430072, Peoples R China
6.South China Agr Univ, Coll Mat & Energy, Guangdong Lab Lingnan Modern Agr, Guangzhou 510642, Peoples R China

Wang, Hui,Wang, Yinyan,Zheng, Peitao,et al. Self-Healing Double-Cross-Linked Supramolecular Binders of a Polyacrylamide-Grafted Soy Protein Isolate for Li-S Batteries[J]. ACS Sustainable Chemistry & Engineering,2020,8(34):12799-12808.

Wang, Hui.,Wang, Yinyan.,Zheng, Peitao.,Yang, Yu.,Chen, Yukun.,...&Wang, Chaoyang.(2020).Self-Healing Double-Cross-Linked Supramolecular Binders of a Polyacrylamide-Grafted Soy Protein Isolate for Li-S Batteries.ACS Sustainable Chemistry & Engineering,8(34),12799-12808.

Wang, Hui,et al."Self-Healing Double-Cross-Linked Supramolecular Binders of a Polyacrylamide-Grafted Soy Protein Isolate for Li-S Batteries".ACS Sustainable Chemistry & Engineering 8.34(2020):12799-12808.