@article{34359, author = {Zhimeng Liu and Xin He and Chen Fang and Luis E Camacho-Forero and Yangzhi Zhao and Yanbao Fu and Jun Feng and Robert Kostecki and Perla B Balbuena and Junhua Xhang and Jingxin Lei and Gao Liu}, title = {Reversible Crosslinked Polymer Binder for Recyclable Lithium Sulfur Batteries with High Performance}, abstract = {

Owing to the negative impact of the extensive utilization of batteries on the environment, sustainability of the cells needs to be included in the systemic research of batteries. Herein, a dissolvable ionic crosslinked polymer (DICP) is exploited as a binder for lithium{\textendash}sulfur batteries by crosslinking the polyacrylic acid and polyethyleneimine through carboxy-amino ionic interaction. This interaction is pH-controlled, and therefore, the crosslinked binder network can be readily dissociated under basic conditions, providing a facile strategy enabling valuable components recycled through a convenient washing method. The sulfur cathode prepared using the recycled carbon{\textendash}sulfur composite can deliver comparable capacity as that of fresh electrode. In addition, evidence from cell performance and characterizations, such as in situ X-ray absorption spectroscopy, in situ UV{\textendash}visible spectroscopy, X-ray photoelectron spectroscopy, and density functional theory calculation, confirms that DICP is a more effective binder than its commercial counterpart on suppressing polysulfide dissolution in the electrolyte. Exploiting reversible crosslinked polymer binder for recyclable Li{\textendash}S batteries with ameliorated electrochemical performance, this study illuminates sustainable development for large-scale energy storage systems.

}, year = {2020}, booktitle = {Advanced Functional Materials}, journal = {Advanced Functional Materials}, series = {Advanced Functional Materials}, volume = {30}, pages = {2003605}, month = {07/2020}, issn = {1616-301X}, doi = {10.1002/adfm.v30.3610.1002/adfm.202003605}, language = {eng}, }