Zirconia/polyethylene terephthalate ceramic fiber paper separator for high-safety lithium-ion battery
- PDF / 4,447,246 Bytes
- 11 Pages / 595.276 x 790.866 pts Page_size
- 101 Downloads / 163 Views
ORIGINAL PAPER
Zirconia/polyethylene terephthalate ceramic fiber paper separator for high-safety lithium-ion battery Lixin Liu 1 & Zenghao Wang 1 & Yongshuai Xie 1 & Ying Peng 1 & Jianhong Dong 1 & Y. T. Chow 2 & Guanghui Zhang 1 & Luyi Zhu 1 & Xinqiang Wang 1 & Dong Xu 1 Received: 17 May 2020 / Revised: 19 July 2020 / Accepted: 23 August 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The non-woven mat has a three-dimensionally distributed fiber structure, but because the randomly dispersed structure caused the pore diameter of the separator to enlarge, this may lead to a short circuit of the battery. In this work, organic polyethylene terephthalate (PET) was combined with inorganic zirconia (ZrO2) ceramic fiber using a low-cost papermaking method. The addition of PET blocked part of the macropores of the fiber separator, enabling the separator a suitable pore size. The PET connected the nodes of the zirconia fibers to provide mechanical support. At the same time, the ZrO2-PET composite separator inherited the excellent high temperature resistance of zirconia ceramic fiber and a maintained dimensional stability after heating at 300 °C for 1 h, providing a strong guarantee for the safe performance of the battery. We found that when the concentration of PET was 5%, the highest electrolyte uptake (301.83%) occurred as well as electrochemical performance. In addition, the ZrO2-PET composite separator achieved an excellent cycle performance at 60 °C compared with the polypropylene (PP) separator. Keywords Lithium-ion battery . Separator . Ceramic fiber paper . High safety
Introduction Lithium-ion battery is used as a new energy storage device in various power energy fields due to its high charging voltage platform, long cycle life, no pollution, and small selfdischarge [1–3]. However, there is a thermal runaway of the battery at high temperatures, causing safety problems such as fire hazard [4–6]. The composition of lithium-ion battery includes positive and negative electrodes, separator, and electrolyte. The battery separator is an essential component of batteries that strongly affects their performance. It isolates
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11581-020-03755-7) contains supplementary material, which is available to authorized users. * Guanghui Zhang [email protected] 1
State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, Shandong, People’s Republic of China
2
Department of Electrical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, SAR, China
the positive and negative electrodes and prevents the occurrence of problems such as thermal runaway caused by contact between positive and negative electrodes [7–9]. At present, most of the commercially applied separators are polyolefin separators, PP (polypropylene) and PE (polyethylene), which have excellent mechanical and electrochemical properties. However, they are still less tha
Data Loading...
