Title:
SOLID-STATE POLYMER ELECTROLYTE CONTAINING BORON-FLUORINE STRUCTURE, PREPARATION METHOD THEREFOR, AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/129582
Kind Code:
A1
Abstract:
Disclosed are a solid-state polymer electrolyte containing a boron-fluorine structure, a preparation method therefor, and the use thereof. The method for preparing the solid-state polymer electrolyte comprises the following steps: S1: adding a vinylic boron-fluorine monomer, a vinylic polyether monomer, a modified monomer and a functional polymer to a solvent, adding an initiator for a reaction, and then performing a purification treatment to obtain polymer system B; S2: adding polymer system B, a lithium salt, a filler and an auxiliary to a solvent, adding a cross-linking agent to obtain a mixed solution, and then uniformly coating a mold with the mixed solution for a reaction; and S3: obtaining the solid-state polymer electrolyte. The obtained solid-state polymer electrolyte is assembled, together with a positive electrode plate and a negative electrode plate, into a solid-state battery cell, tabs are then welded thereto, and same is then subjected to a heat treatment and a packaging treatment to obtain a lithium ion battery. The solid-state polymer electrolyte containing the boron-fluorine structure has a good high-voltage resistance, a high conductivity, and compatibility with lithium metal.
Inventors:
TANG WEICHAO (CN)
LI SULI (CN)
ZHAO WEI (CN)
YUAN HAO (CN)
LI JUNYI (CN)
XU YANMING (CN)
LI SULI (CN)
ZHAO WEI (CN)
YUAN HAO (CN)
LI JUNYI (CN)
XU YANMING (CN)
Application Number:
PCT/CN2020/138139
Publication Date:
July 01, 2021
Filing Date:
December 21, 2020
Export Citation:
Assignee:
ZHUHAI COSMX BATTERY CO LTD (CN)
International Classes:
H01M10/0565
Domestic Patent References:
| WO2012138844A2 | 2012-10-11 |
Foreign References:
| CN111162312A | 2020-05-15 | |||
| CN109326822A | 2019-02-12 | |||
| CN103509153A | 2014-01-15 | |||
| JP5289727B2 | 2013-09-11 | |||
| CN101563807A | 2009-10-21 | |||
| CN201711049442A | 2017-10-31 | |||
| CN201810950307A | 2018-08-20 |
Other References:
See also references of EP 4068453A4
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
Download PDF:
Previous Patent: SIGNAL PROCESSING METHOD AND APPARATUS
Next Patent: POLYMER ELECTROLYTE, AND LITHIUM ION BATTERY COMPRISING SAME
Next Patent: POLYMER ELECTROLYTE, AND LITHIUM ION BATTERY COMPRISING SAME