Poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene): A New Binder for Conventional and Printable Lithium-Ion Batteries,ACS Applied Energy Materials

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Poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene): A New Binder for Conventional and Printable Lithium-Ion Batteries
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2021-11-17 , DOI: 10.1021/acsaem.1c02897
João C. Barbosa _{1,

2} , Rafael S. Pinto _{1,

3} , Loic Hilliou ₄ , Maria. M. Silva ₅ , Carlos M. Costa _{1,

3} , Renato Gonçalves ₅ , Senentxu Lanceros-Méndez _{6,

7}

Affiliation

The growing interest in printable batteries leads to the necessity of developing new and more efficient materials that meet the required processability and performance characteristics. In this work, a poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) terpolymer has been used for the first time as a polymer binder for lithium-ion battery cathodes and their electrochemical characteristics have been compared with cathodes prepared with the commonly used poly(vinylidene fluoride), P(VDF), polymer binder. The rheological analysis shows that the inks show suitable properties to be printed by direct ink writing (DIW). Printing parameters were optimized with respect to the printing cathode line distance, and it is shown that the printed cathodes allowed to achieve improved battery performance when compared with conventional doctor blade-prepared electrodes, with a maximum discharge capacity of 147 mAh·g^–1 at a C/8 rate. Further, it is shown that the P(VDF-TrFE-CFE) terpolymer as a new polymer binder leads to improved cathode performance (90 mAh·g^–1 at a 1C rate) when compared with cathodes prepared with the commercial P(VDF) binder (80 mAh·g^–1 at the 1C rate) under the same preparation method. Thus, it is shown that P(VDF-TrFE-CFE) represents a suitable binder for a new generation of high-performance batteries.

中文翻译：

聚（偏二氟乙烯-三氟乙烯-氯氟乙烯）：一种用于传统和可印刷锂离子电池的新型粘合剂

人们对可印刷电池的兴趣日益浓厚，因此有必要开发新的、更高效的材料，以满足所需的可加工性和性能特征。在这项工作中，聚（偏二氟乙烯-三氟乙烯-氯氟乙烯）（P（VDF-TrFE-CFE））三元共聚物首次被用作锂离子电池正极的聚合物粘合剂，并与它们的电化学特性进行了比较。用常用的聚偏二氟乙烯、P(VDF)、聚合物粘合剂制备的阴极。流变分析表明，油墨显示出适合通过直接墨水书写 (DIW) 打印的特性。针对印刷阴极线距优化印刷参数，^–1以 C/8 速率。此外，与使用商业 P(VDF) 制备的正极相比，P(VDF-TrFE-CFE) 三元共聚物作为一种新型聚合物粘合剂可提高正极性能（1C 倍率下为90 mAh·g ^–1）粘合剂（80 mAh·g ^–1在 1C 倍率下）在相同的制备方法下。因此，表明 P(VDF-TrFE-CFE) 是新一代高性能电池的合适粘合剂。

更新日期：2021-12-27

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