Silica-Composite Nonwoven Separators for Lithium-Ion Battery: Development and Characterization
Year: 2008
Type: article
Abstract: We have developed silica-composite nonwovens using polyolefin fiber and nanosize silica powder. The silica-composite nonwoven showed better wettability than the polyolefin-based microporous membrane and nonwoven. It was found that the Gurley value of the silica-composite nonwoven has to be higher than in order to suppress a microshort of battery. It was confirmed that the silica-composite nonwovens showed higher maximum power than that of the Celgard membrane by instantaneous discharging test. The cells with the silica-composite nonwovens showed better cycling performances than that of the Celgard membrane at a moderate C-rate of 0.5. A hot-oven test using charged cells up to exhibited that the cells with the silica-composite nonwovens are thermally stable at , whereas the cell with the Celgard membrane showed a short circuit probably due to thermal shrinkage of the separator.
DOI: 10.1149/1.2956965
Authors: Tae-Hyung Cho, Masanao Tanaka, Hiroshi Onishi, Yuka Kondo, Tatsuo Nakamura, Hiroaki Yamazaki, Shigeo Tanase, Tetsuo Sakai
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2016541593