All-solid-state polymer electrolyte with semi-interpenetrating network structure and preparation method thereof
An all-solid polymer and network structure technology, applied in the field of all-solid polymer electrolytes and their preparation, can solve the durability requirements and industrial applications of lithium-ion batteries without materials, low room temperature ionic conductivity of solid polymer electrolytes, electrolyte membranes Problems such as long-term use stability impact, to achieve the effect of improving ionic conductivity at room temperature, improving the electrochemical window, and improving the conductivity of lithium ions
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0042] In a second aspect, the present invention also provides a method for preparing the above-mentioned all-solid polymer electrolyte with a semi-interpenetrating network structure, comprising the following steps:
[0043] S1. Add the modified block copolymer, polyether acrylate oligomer monomer and appropriate amount of solvent together into the reactor, and under the protection of nitrogen or argon, keep stirring for 1h-5h under the condition of avoiding light to form a uniform Precursor solution;
[0044] S2. Add initiator, lithium salt and additives to the above precursor solution, and stir to obtain a mixed solution; uniformly pour the mixed solution in glass or a mold, seal it, and initiate the reaction under an inert gas;
[0045] S3. After the initiation reaction is completed, vacuum drying is carried out.
[0046] In the present invention, the molecular weight of the modified block copolymer is 10,000-1,000,000, such as 10,000, 50,000, 200,000, 500,000, 800,000, an...
Embodiment 1
[0061] A method for preparing an all-solid polymer electrolyte with a semi-interpenetrating network structure, the steps are as follows:
[0062] S1. Add 60 parts of modified block copolymer (molecular weight: 100,000), 20 parts of polyethylene glycol diacrylate (molecular weight: 700) and 5ml of acetonitrile together into the reactor, and continuously blow nitrogen into the reactor, and Continue stirring at a speed of 300r / min for 5h under light-shielding conditions to form a uniform precursor solution; wherein, the structural formula of the modified block copolymer is as follows:
[0063] , where n:m:l= 93:6:1, j=23;
[0064] S2. Add 0.1 parts of azobisisobutyronitrile, 55 parts of lithium bistrifluoromethanesulfonimide and 20 parts of methoxypolyethylene glycol borate to the above precursor solution, and continue at a speed of 300r / min Stir for 5 hours to obtain a mixed solution; pour the mixed solution evenly into a polytetrafluoroethylene mold, seal it, and perform an ...
Embodiment 2
[0067] A method for preparing an all-solid polymer electrolyte with a semi-interpenetrating network structure, the steps are as follows:
[0068] S1. Add 95 parts of modified block copolymer (molecular weight: 10,000), 50 parts of polyethylene glycol diacrylate (molecular weight: 400) and 6ml of tetrahydrofuran into the reactor, and continuously pass nitrogen into the reactor, and Continue stirring at a speed of 100r / min for 5h under dark conditions to form a uniform precursor solution; wherein, the structural formula of the modified block copolymer is as follows:
[0069]
[0070] Among them, n, m, l∈integer, and n≥0, m≥0, l≥0, m and l are different from 0, j∈integer, and j>0;
[0071] S2. Add 1 part of benzophenone, 10 parts of lithium bisoxalate borate, and 50 parts of ethylene carbonate to the above precursor solution, and continue stirring at a speed of 300 r / min for 12 hours to obtain a mixed solution; pour the mixed solution evenly In a glass or polytetrafluoroethyl...
PUM
| Property | Measurement | Unit |
|---|---|---|
| electrical conductivity | aaaaa | aaaaa |
| electrical conductivity | aaaaa | aaaaa |
| electrical conductivity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More