Reversible cross-linked phosphorylate binder for recyclable lithium-sulfur batteries

Wang，Hui1,2; Zhang，Guangzhao4; Chen，Yukun2; Zheng，Peitao5; Yi，Huan5; Deng，Yonghong4; Yang，Yu3; Wang，Chaoyang1

2023-01-15

10.1016/j.cej.2022.139128

CHEMICAL ENGINEERING JOURNAL   Impact Factor & Quartile

1385-8947

1873-3212

The development of facile and eco-friendly recycling strategies for lithium-sulfur batteries (LSBs) is very important since they will generate a growing hazard to the environment. Herein, a hydrogen bonding cross-linked multi-functional binder (named: APL) of Lithiated polyacrylic acid-co-vinylphosphonic acid (AA-VPA) and phosphorylated soy protein (P-SPI) is explored for LSBs. Owing to the precipitation of P-SPI at the isoelectric point, hydrogen bonding cross-linking between AA-VPA and P-SPI can be readily dissociated under acidic conditions, providing a facile method to enable S[sbnd]C composite recycled by a convenient acid pickling. Moreover, the robust cross-linking network provides APL binder a strong bonding force and excellent mechanical properties, ensuring the structural integrity of the sulfur (S) electrode during long-term cycling. The abundant polar groups within APL polymeric network endow sulfur cathode with superior polysulfide anchoring capacity and retard the shuttle effect of LSBs. APL-based sulfur cathode rendered a high specific capacity of 940 mAh g with a sulfur loading of 4.8 mg cm. After 250 charge/discharge cycles at a current density of 1C, the specific capacity of sulfur cathode is still as high as 805 mAh g. Hence, the flexible electrode remains intact after bending. This work proposes an environment-friendly and cost-effective strategy for the development of reversible cross-linked multi-functional binders for recyclable and high-energy LSBs.

Lithium-sulfur battery Phosphorylate binder Recyclable Reversible cross-linking

SCI

English

Others

[2021A0505110001] ; [22275059] ; [2022M711199] ; [202102020747] ; [2019A1515010595]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:000863428900004

ELSEVIER SCIENCE SA

ENGINEERING

2-s2.0-85138019807

Scopus

1.Research Institute of Materials Science,Key Lab of Guangdong Province for High Property and Functional Polymer Materials,South China University of Technology,Guangzhou,510640,China
2.Lab of Advanced Elastomer,South China University of Technology,Guangzhou,510640,China
3.College of Materials and Energy,Guangdong Laboratory for Lingnan Modern Agriculture,South China Agricultural University,Guangzhou,510642,China
4.Department of Materials Science & Engineering,Southern University of Science and Technology,Shenzhen,518055,China
5.Shenzhen SoliChem Technology Co.,LTD,Shenzhen,518122,China

Wang，Hui,Zhang，Guangzhao,Chen，Yukun,et al. Reversible cross-linked phosphorylate binder for recyclable lithium-sulfur batteries[J]. CHEMICAL ENGINEERING JOURNAL,2023,452.

Wang，Hui.,Zhang，Guangzhao.,Chen，Yukun.,Zheng，Peitao.,Yi，Huan.,...&Wang，Chaoyang.(2023).Reversible cross-linked phosphorylate binder for recyclable lithium-sulfur batteries.CHEMICAL ENGINEERING JOURNAL,452.

Wang，Hui,et al."Reversible cross-linked phosphorylate binder for recyclable lithium-sulfur batteries".CHEMICAL ENGINEERING JOURNAL 452(2023).