Progress in solvent-free dry-film technology for batteries and supercapacitors. (May 2022)

• Record Type: Journal Article
• Authors: Li, Yongxing; Wu, Yujing; Wang, Zhixuan; Xu, Jieru; Ma, Tenghuan; Chen, Liquan; Li, Hong; Wu, Fan
• Is Part Of: Materials today. Volume 55(2022)
• Page Start: 92
• Page End: 109
• Publication Date: 2022-05
• Subjects: Solvent-free dry-film technology -- All solid-state batteries -- Powder spray -- Binder fibrillation -- Powder compression -- Vapor deposition; ASSBs All solid-state batteries -- LIBs Lithium-ion batteries -- NMP N-Methyl-2-pyrrolidone -- SEs Solid electrolytes -- CIP Cold isostatic pressing -- HIP Hot isostatic pressing -- WIP Warm isostatic pressing -- CVD Chemical Vapor Deposition -- SCs Supercapacitors -- PTFE Polytetrafluoroethylene -- PVDF Polyvinylidene fluoride -- PES Powder electrostatic spraying -- EDM Electrostatic dictyosome method -- LTO Lithium titanate -- NMC Li(NixMnyCoz)O2 -- NCA LiNi0.8Co0.15Al0.05O2 -- LFP LiFePO4 -- LLZTO Li6.75La3Zr1.75Ta0.25O12 -- CSE Composite solid electrolyte; Materials science -- Periodicals; Metallurgy -- Periodicals; Metal-work -- Periodicals; Biomedical and Dental Materials -- Periodicals; Manufactured Materials -- Periodicals; Metals -- Periodicals; 620.11
• DOI: 10.1016/j.mattod.2022.04.008
• Languages: English
• ISSNs: 1369-7021

Abstract

Graphical abstract: This review has systematically summarized and organized researches from both academic articles and industrial patents in the direction of dry-method preparation It also introduces advantages, history, categories, details, and applications of solvent-free dry-film technology. Based on the obtained insights, powder spray and binder fibrillation processes are found to be suitable for mass production of batteries, especially all solid-state batteries (ASSBs). Abstract: Solvent-free dry-film technology has attracted wide attention due to its ability to avoid pollution/waste caused by poisonous organic solvents, as well as its advantage for energy density enhancement, electrochemical performance improvement and electrode–electrolyte interface compatibility. However, a summary of the research advancements and technology development in this field is still missing. To fill this gap, a complete overview of the technical advantages, development process, principal mechanisms and application fields of solvent-free dry film technology is presented here. Firstly, the history of solvent-free dry-film technology is introduced, followed by detailed discussions on different types of dry-film making methods. Moreover, powder spray and binder fibrillation are emphasized as key methods due to their low-cost mass-production capability, with an elaboration on the associated preparation process including principle, procedure, and parameters. Both patents from the industry and research papers from the academy of the aforementioned two methods are analyzed/summarized for complete information, whose technical advantages are found to be suitable for all solid-state batteries (ASSBs). Based on the insights obtained above, perspectives are given for promoting future development of solvent-free dry-film technology.