title: Sustainable and Superior Heat-Resistant Alginate Nonwoven Separator of LiNi0.5Mn1.5O4/Li Batteries Operated at 55 °C.
abstract: High-voltage lithium-ion batteries have become a major research focus. As a major part of lithium batteries, the separator plays a critical role in the development of high-voltage lithium batteries. Herein, we demonstrated a sustainable and superior heat-resistant alginate nonwoven separator for high-voltage (5 V) lithium batteries. It was demonstrated that the resultant alginate nonwoven separator exhibited better mechanical property (37 MPa), superior thermal stability (up to 150 °C), and higher ionic conductivity (1.4 × 10-3S/cm) as compared to commercially available polyolefin (PP) separator. More impressively, the 5 V class LiNi0.5Mn1.5O4(LNMO)/Li cell with this alginate nonwoven separator delivered much better cycling stability (maintaining 79.6% of its initial discharge capacity) than that (69.3%) of PP separator after 200 cycles at an elevated temperature of 55 °C. In addition, the LiFePO4/Li cell assembled with such alginate nonwoven separator could still charge and discharge normally even at an elevated temperature of 150 °C. The above-mentioned fascinating characteristics of alginate separator provide great probability for its application for high-voltage (5 V) lithium batteries at elevated temperatures.
authors.affiliation: School of Chemistry and Chemical Engineering, Qingdao University , Qingdao, Shandong Province 266071, People's Republic of China.|Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao, 266101, People's Republic of China.
authors.forename: Huijie
authors.initials: H
authors.lastname: Wen
authors.affiliation: Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao, 266101, People's Republic of China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao, 266101, People's Republic of China.
authors.forename: Jingchao
authors.initials: J
authors.lastname: Chai
authors.affiliation: Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao, 266101, People's Republic of China.
authors.forename: Jun
authors.initials: J
authors.lastname: Ma
authors.affiliation: Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao, 266101, People's Republic of China.
authors.forename: Liping
authors.initials: L
authors.lastname: Yue
authors.affiliation: Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao, 266101, People's Republic of China.
authors.forename: Tiantian
authors.initials: T
authors.lastname: Dong
authors.affiliation: Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao, 266101, People's Republic of China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Zang
authors.affiliation: Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao, 266101, People's Republic of China.
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Liu
authors.affiliation: School of Chemistry and Chemical Engineering, Qingdao University , Qingdao, Shandong Province 266071, People's Republic of China.
authors.forename: Botao
authors.initials: B
authors.lastname: Zhang
authors.affiliation: Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao, 266101, People's Republic of China.
authors.forename: Guanglei
authors.identifier: http://orcid.org/0000-0002-8008-7673
authors.initials: G
authors.lastname: Cui
keywords: alginate nonwoven separator; heat resistant; high voltage; lithium batteries; sustainable