@article{Chen2023, 
author = {Daiqian Chen and Chenji Hu and Qi Chen and Guoyong Xue and Lingfei Tang and Qingyu Dong and Bowen Chen and Fengrui Zhang and Mingwen Gao and Jingjing Xu and Yanbin Shen and Liwei Chen},
title = {High ceramic content composite solid-state electrolyte films prepared via a scalable solvent-free process},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {3},
pages = {3847-3854},
keywords = {free-standing, solid-state battery, composite solid-state electrolyte, solid-state electrolyte film},
url = {https://www.sciopen.com/article/10.1007/s12274-022-4845-x},
doi = {10.1007/s12274-022-4845-x},
abstract = {The development of high-performance solid-state electrolyte (SSE) films is critical to the practical application of all-solid-state Li metal batteries (ASSLMBs). However, developing high-performance free-standing electrolyte films remains a challenging task. In this work, we demonstrate a novel scalable solvent-free process for fabricating high ceramic content composite solid-state electrolyte (HCCSE) films. Specifically speaking, a mixture of ceramic and polymer is dry mixed, fibered, and calendered into a free-standing porous ceramic film, on which polymer precursor is coated and polymerized to bridge the inorganic ceramic particles, resulting in a flexible HCCSE film with a ceramic content of up to 80 wt.%. High ceramic content not only leads to high ionic conductivity but also brings good mechanical properties; while the organic phase enables electrode|electrolyte interfacial stability. When Li10GeP2S12 (LGPS) and polymeric ionic liquid-based solid polymer electrolytes (PIL-SPEs) were used as the inorganic and organic phases, respectively, the room temperature ionic conductivity of the resulted HCCSE reaches 0.91 mS·cm−1. Based on this HCCSE, Li||Li symmetric battery cycled stably for more than 2,400 h with ultra-low overpotential, and ASSLMBs with different cathodes (LiFePO4 and sulfurized polyacrylonitrile (PAN-S)) present small polarization and decent cyclability at room temperature. This work provides a novel scalable solvent-free strategy for preparing high-performance free-standing composite solid-state electrolyte (CSE) film for room temperature ASSLMBs.}
}