• 专利标题:   Slurry composition used for forming electrode, comprises binder comprising fluoropolymer, solvent system comprising molecule comprising sulfoxide functional group and polybasic ester and glycol ether, and electrochemically active material.
  • 专利号:   WO2023056397-A1
  • 发明人:   LI Z, YANG Y
  • 专利权人:   PPG IND OHIO INC
  • 国际专利分类:   H01G011/30, H01M010/04, H01M010/0525, H01M004/04, H01M004/131, H01M004/133, H01M004/134, H01M004/136, H01M004/36, H01M004/38, H01M004/48, H01M004/505, H01M004/525, H01M004/58, H01M004/587, H01M004/62, H01M004/66, H01M004/74, H01M050/204
  • 专利详细信息:   WO2023056397-A1 06 Apr 2023 H01M-004/04 202332 Pages: 72 English
  • 申请详细信息:   WO2023056397-A1 WOUS077313 30 Sep 2022
  • 优先权号:   US250355P

▎ 摘  要

NOVELTY - A slurry composition comprises (a) a binder comprising at least one fluoropolymer, and (b) a solvent system comprising (i) a molecule comprising a sulfoxide functional group and (ii) a polybasic ester and/or glycol ether, and (c) an electroactive material. The solvent system comprises less than 1 wt.% amine compound (I) based on the weight of the solvent system. USE - Slurry composition used for forming electrode e.g. positive electrode and negative electrode for electrical storage device e.g. cell, battery pack, secondary battery, capacitor and supercapacitor (all claimed). ADVANTAGE - The slurry composition has room temperature stability of more than 1 week, preferably more than 1 month, and maintains a clear appearance to visual inspection without gelling for a specified period of time. DETAILED DESCRIPTION - A slurry composition comprises (a) a binder comprising at least one fluoropolymer, (b) a solvent system comprising (i) a molecule comprising a sulfoxide functional group and (ii) a polybasic ester and/or glycol ether, and (c) an electroactive material. The solvent system comprises less than 1 wt.% amine compound of formula: R1C(=O)NR2R3(I) based on the weight of the solvent system. R =linear or branched 1-6C aliphatic saturated group substituted by -C(=O)OR or -C(=O)NR R ; R=1-6C alkyl; R ,R =methyl or ethyl;and R ,R =methyl or ethyl. INDEPENDENT CLAIMS are included for the following: electrode, which comprises (A) an electrical current collector, and (B) a film; and electrical storage device, which comprises (a) the electrode, (b) an counter electrode, and (c) and electrolyte.