@article{Yuan2023, 
author = {Yu Yuan and Likun Chen and Yuhang Li and Xufei An and Jianshuai Lv and Shaoke Guo and Xing Cheng and Yang Zhao and Ming Liu and Yan-Bing He and Feiyu Kang},
title = {Functional LiTaO3 filler with tandem conductivity and ferroelectricity for PVDF-based composite solid-state electrolyte},
year = {2023},
journal = {Energy Materials and Devices},
volume = {1},
number = {1},
pages = {9370004},
keywords = {ferroelectric ion conductor, composite solid-state electrolytes, space charge layer, Li deposition},
url = {https://www.sciopen.com/article/10.26599/EMD.2023.9370004},
doi = {10.26599/EMD.2023.9370004},
abstract = {Composite solid-state electrolytes have received significant attention due to their combined advantages as inorganic and polymer electrolytes. However, conventional ceramic fillers offer limited ion conductivity enhancement for composite solid-state electrolytes due to the space-charge layer between the polymer matrix and ceramic phase. In this study, we develop a ferroelectric ceramic ion conductor (LiTaO3) as a functional filler to simultaneously alleviate the space-charge layer and provide an extra Li+ transport pathway. The obtained composite solid-state electrolyte comprising LiTaO3 filler and poly (vinylidene difluoride) matrix (P-LTO15) achieves an ionic conductivity of 4.90 × 10−4 S cm−1 and a Li+ transference number of 0.45. The polarized ferroelectric LiTaO3 creates a uniform electric field and promotes homogenous Li plating/stripping, providing the Li symmetrical batteries with an ultrastable cycle life for 4000 h at 0.1 mA cm−2 and a low polarization overpotential (~50 mV). Furthermore, the solid-state NCM811/P-LTO15/Li full batteries achieve an ultralong cycling performance (1400 cycles) at 1 C and a high discharge capacity of 102.1 mAh g−1 at 5 C. This work sheds light on the design of functional ceramic fillers for composite solid-state electrolytes to effectively enhance ion conductivity and battery performance.}
}