@article{Tse2025, 
author = {Yu Tat Tse and Shengbo Lu and Xinying Sun and Dechao Zhang and Kin Chung Hui and Chenmin Liu and Chunyi Zhi},
title = {High dielectric composite polymer electrolyte for lithium-ion batteries},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {9},
pages = {94907260},
keywords = {lithium-ion batteries, composite polymer electrolyte, high dielectric polymer, sodium super ionic conductor (NASICON)-type ceramic nanoparticle, flexible batteries},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907260},
doi = {10.26599/NR.2025.94907260},
abstract = {Poly(vinylidene fluoride) (PVDF)-based solid polymer electrolytes (SPEs) with “lithium salt in polymer” configurations typically exhibit poor lithium salt dissociation and mechanical strength. In this study, we proposed a composite polymer electrolyte (CPE) for solid-state lithium-ion batteries (LIBs) as a novel approach to address the challenges. The CPE incorporates a high dielectric polymer poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) (P(VDF-TrFE-CTFE)) as the polymer matrix, and sodium super ionic conductor (NASICON)-type ceramic Li1.5Al0.5Ti1.5(PO4)3 (LATP) as fillers. The optimized CPE demonstrates enhanced dissociation of lithium salts, leading to high ionic conductivity (1.1 mS·cm−1) and improved lithium transference numbers ( tLi+ = 0.51). Meanwhile, the interaction between LATP inorganic filler and P(VDF-TrFE-CTFE) enhances the elasticity and tensile strength (1.09 MPa) of the CPE. The graphite|CPE|NCM811 (NCM stands for lithium nickel manganese cobalt oxide. Chemical formula of NCM811 is “LiNi0.8Co0.1Mn0.1O2”) cell achieves a high specific capacity of 160 mAh·g−1 with excellent cycles stably for 300 cycles at 1 C. In addition, the flexible graphite|CPE|NCM811 pouch cell demonstrates exceptional capacity stability under dynamic bending for 10,000 times. Furthermore, the CPE can fulfil the fabrication process needs of flexible stacking-type and winding-type cells, highlighting its versatility and suitability for various LIB configurations in real applications.}
}