Tartaric Acid Cross-Linking Polyvinyl Alcohol as Degradable Separators for Rechargeable Lithium Ion Batteries

Yuan, Huimin; Liu, Kun; Luo, Wen; Wang, Zhiqiang; Yan, Chunliu; Hu, Jing; Wang, Xinyang; Liu, Guiyu; Xu, Zhenghe; Lu, Zhouguang

2024-05-01

10.1002/cssc.202400359

CHEMSUSCHEM   影响因子和分区

1864-5631

1864-564X

The escalating focus on environmental concerns and the swift advancement of eco-friendly biodegradable batteries raises a pressing demand for enhanced material design in the battery field. The traditional polypropylene (PP) that is monopolistically utilized in the commercial LIBs is hard to recycle. In this work, we prepare a novel water degradable separators via the cross-linking of polyvinyl alcohol (PVA) and dibasic acid (tartaric acid, TA). Through the integration of non-solvent liquid-phase separation, we successfully produced a thermally stable PVA-TA membrane with tunable thickness and a high level of porosity. These specially engineered PVA-TA separators were implemented in LiFePO4 (LFP)|separator|Li cells, resulting in superior multiplicative performance and achieving a capacity of 88 mAh g(-1) under 5 C. Additionally, the straightforward small molecule cross-linking technique significantly reduced the crystalline region of the polymer, thereby enhancing ionic conductivity. Notably, after cycling, the PVA-TA separators can be easily dissolved in 95 degrees C hot water, enabling its reutilization for the production of new PVA-TA separators. Therefore, this work introduces a novel concept to design green and sustainable separators for recyclable lithium batteries.

Lithium ion batteries Separators Degradable Polyvinyl alcohol Fast Li+ transport

SCI ; EI

英语

第一 ; 通讯

Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials[ZDSYS20200421111401738] ; National Natural Science Foundation of China[92372114] ; null[JCYJ 20220818100418040]

Chemistry ; Science & Technology - Other Topics

Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology

WOS:001225613900001

WILEY-V C H VERLAG GMBH

Web of Science

Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen Key Lab Interfacial Sci & Engn Mat, 1088 Xueyuan Ave, Shenzhen 518055, Peoples R China

Yuan, Huimin,Liu, Kun,Luo, Wen,et al. Tartaric Acid Cross-Linking Polyvinyl Alcohol as Degradable Separators for Rechargeable Lithium Ion Batteries[J]. CHEMSUSCHEM,2024.

Yuan, Huimin.,Liu, Kun.,Luo, Wen.,Wang, Zhiqiang.,Yan, Chunliu.,...&Lu, Zhouguang.(2024).Tartaric Acid Cross-Linking Polyvinyl Alcohol as Degradable Separators for Rechargeable Lithium Ion Batteries.CHEMSUSCHEM.

Yuan, Huimin,et al."Tartaric Acid Cross-Linking Polyvinyl Alcohol as Degradable Separators for Rechargeable Lithium Ion Batteries".CHEMSUSCHEM (2024).