Bacteria cellulose framework-supported solid composite polymer electrolytes for ambient-temperature lithium metal batteries. (8th October 2022)

• Record Type: Journal Article
• Authors: Yuan, Boheng; Cong, Zhi; Cheng, Zhi; Li, Lei; Xia, Linan; Yan, Jieda; Shen, Fei; Zhao, Bin; Han, Xiaogang
• Is Part Of: Nanotechnology. Volume 33:Number 41(2022)
• Publication Date: 2022-10-08
• Subjects: bacteria cellulose -- nanocellulose framework -- composite polymer electrolyte -- solid state batteries -- photo polymerization -- succinonitrile; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/ac64ab
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: Composite polymer electrolyte (CPE) films with high room temperature ionic conductivity are urgently needed for the practical application of high-safety solid-state batteries (SSBs). Here, a flexible polymer-polymer CPE thin film reinforced by a three-dimensional (3D) bacterial cellulose (BC) framework derived from natural BC hydrogel was prepared via the in situ photo-polymerization method. The BC film was utilized as the supporting matrix to ensure high flexibility and mechanical strength. The BC–CPE attained a high room temperature ionic conductivity of 1.3 × 10 −4 S cm −1 . The Li∣BC–CPE∣Li symmetric cell manifested stable cycles of more than 1200 h. The LCO∣BC–CPE∣Li full cell attained an initial discharge specific capacity of 128.7 mAh g −1 with 82.6% discharge capacity retention after 150 cycles at 0.2 C under room temperature. The proposed polymer-polymer CPE configuration represents a promising route for manufacturing environmental SSBs, especially since cellulose biomaterials are abundant in nature.