A novel method to prepare a highly porous separator based on nanocellulose with multi-scale pore structures and its application for rechargeable lithium ion batteries

被引:39
作者
Gou, Jingren [1 ]
Liu, Wangyu [1 ]
Tang, Aimin [2 ]
机构
[1] South China Univ Technol, Sch Mech & Automot Engn, Wushan Rd, Guangzhou 510641, Peoples R China
[2] South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou, Peoples R China
基金
中国国家自然科学基金;
关键词
Nanocellulose separator; High porosity; Multiscale pore structure; Lithium ion battery; GEL POLYMER ELECTROLYTE; MEMBRANES;
D O I
10.1016/j.memsci.2021.119750
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Nanocellulose has been adopted to fabricate renewable and thermally stable separators for lithium ion batteries (LIBs). However, the nanofibrils tend to form dense network because of the capillarity during drying, consequently limiting the electrolyte retention capability of the membrane and blocking the migration of ions. To tackle the problems, a novel method is presented to fabricate a nanocellulose based separator with high porosity and multiscale pore structure. The micro-sized pores derived from the dissolution of PS spheres can assure a highly porous feature of the separator. The nano-sized pores fabricated from the ethanol bath further increase the porosity and improve the permeability of the separator. Although the resultant pores weaken the mechanical strength of the separator, the electrochemical performances including the ionic conductivity, interfacial resistance and electrochemical window are ameliorated due to the distinctive microstructures. Moreover, the battery performances, containing capacity retention and rate capability, of the coin battery assembled with the asconstructed separator are proven to be agreeable by the battery test.
引用
收藏
页数:9
相关论文
共 43 条
[1]   Ionic association analysis of LiTDI, LiFSI and LiPF6 in EC/DMC for better Li-ion battery performances [J].
Berhaut, Christopher L. ;
Lemordant, Daniel ;
Porion, Patrice ;
Timperman, Laure ;
Schmidt, Gregory ;
Anouti, Meriem .
RSC ADVANCES, 2019, 9 (08) :4599-4608
[2]  
Bicy K., 2020, MATER CHEM PHYS, P255
[4]   A mechanically robust, biodegradable and high performance cellulose gel membrane as gel polymer electrolyte of lithium-ion battery [J].
Du, Zhi ;
Su, Yuanzhen ;
Qu, Yanyu ;
Zhao, Lingzhu ;
Jia, Xiaobo ;
Mo, Yan ;
Yu, Feng ;
Du, Jie ;
Chen, Yong .
ELECTROCHIMICA ACTA, 2019, 299 :19-26
[5]   PEO based polymer-ceramic hybrid solid electrolytes: a review [J].
Feng, Jingnan ;
Wang, Li ;
Chen, Yijun ;
Wang, Peiyu ;
Zhang, Hanrui ;
He, Xiangming .
NANO CONVERGENCE, 2021, 8 (01)
[6]  
Gooch J.W., 2007, ENCY DICT POLYM, P989
[7]  
Gou J., 2020, POLYMER, P208
[8]   Thermally stable and green cellulose-based composites strengthened by styrene-co-acrylate latex for lithium-ion battery separators [J].
Guo, Tianyu ;
Song, Junlong ;
Jin, Yongcan ;
Sun, Zhonghua ;
Li, Li .
CARBOHYDRATE POLYMERS, 2019, 206 :801-810
[9]   A Protective Layer for Lithium Metal Anode: Why and How [J].
Han, Zhiyuan ;
Zhang, Chen ;
Lin, Qiaowei ;
Zhang, Yunbo ;
Deng, Yaqian ;
Han, Junwei ;
Wu, Dingcai ;
Kang, Feiyu ;
Yang, Quan-Hong ;
Lv, Wei .
SMALL METHODS, 2021, 5 (04)
[10]   Characterization of Tortuosity in Polyetherimide Membranes Based on Gurley and Electrochemical Impedance Spectroscopy [J].
Hantel, Moritz M. ;
Armstrong, Mark J. ;
DaRosa, Fabien ;
l'Abee, Roy .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2017, 164 (02) :A334-A339