Electrolyte membrane for all-solid-state batteries, and method for manufacturing same
A technology of solid electrolyte membrane and solid electrolyte, which is applied in the direction of solid electrolyte, electrolyte, composite electrolyte, etc., can solve the problems of battery tearing or rupture, electrolyte material separation, growth, etc., to improve battery life characteristics and inhibit lithium dendrite growth Effect
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Embodiment approach
[0067] According to still another embodiment of the present invention, a solid electrolyte membrane can be obtained by manufacturing an electrolyte membrane layer and then pressing and embedding a support member into the solid electrolyte membrane layer. image 3 is a schematic diagram showing a method of manufacturing a solid electrolyte membrane by a membrane pressing method. image 3 A method is shown comprising: preparing a support member (step a), coating the support member with an inhibiting material (step b), and placing the coated support member between electrolyte membrane layers (step c) , and pressurize so that the supporting member can be embedded in the electrolyte membrane layer. In the following, reference will be made to image 3 The method is explained in detail.
[0068] First, an electrolyte membrane layer and a support member coated with an inhibiting material are prepared. Regarding the preparation of the support member coated with the inhibiting materi...
Embodiment 1
[0089] 1. Fabrication of Solid Electrolyte Membrane
[0090] (1) Manufacture of electrolyte membrane layer
[0091] Two electrolyte membrane layers were obtained by the following method. Polyethylene oxide (PEO, M w =4,000,000 g / mol) was dissolved in acetonitrile (AN) to prepare a 4% by weight polymer solution. At this time, LiTFSI was also introduced as a lithium salt so that [EO] / [Li + ] The mol ratio=18 / 1. The resulting mixture was stirred overnight at 70 °C so that the PEO and lithium salt could be fully dissolved in the polymer solution. Next, an additive solution containing an initiator and a curing agent is prepared. Curing agent is polyethylene glycol diacrylate (PEGDA, M w =575), the initiator is benzoyl peroxide (BPO), based on PEO, the amount of PEGDA is 20% by weight, based on PEGDA, the amount of BPO is 1% by weight, and acetonitrile is used as a solvent. The additive solution was stirred for about 1 hour so that the ingredients introduced therein could be ...
Embodiment 2
[0101] A solid electrolyte membrane was obtained in the same manner as in Example 1, except that HAuCl at a concentration of 5% by weight was used when manufacturing the porous sheet coated with the inhibiting material 4 . 3H 2 O. In addition, a battery was obtained in the same manner as in Example 1 using the obtained solid electrolyte membrane.
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Abstract
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