Alkali metal negative electrode-electrolyte integrated material, preparation method thereof and application of alkali metal negative electrode-electrolyte integrated material in assembling solid-state battery in air
A solid-state battery and electrolyte technology, applied in non-aqueous electrolyte batteries, electrolyte battery manufacturing, electrolyte layer coatings, etc., can solve problems affecting the electrochemical performance of solid-state batteries, large electrode-electrolyte interface impedance, etc. Improve the interface impedance problem and improve the effect of cycle stability
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Embodiment 1
[0043] A method for preparing a lithium metal negative electrode-electrolyte integrated material, comprising the following steps:
[0044] (1) Weigh 0.2g of dried lithium bistrifluoromethanesulfonimide (LiTFSI), dissolve it in 9.5g of tetrahydrofuran and stir at 25°C for 12h, and obtain a uniform electrolyte salt solution after the electrolyte salt is completely dissolved; weigh 0.5 g of dried polyvinylidene chloride (PVDC) powder was added to the prepared homogeneous electrolyte salt solution and stirred at 25° C. for 12 hours to form a PVDC-LiTFSI electrolyte slurry.
[0045] (2) Transfer the homogeneously dissolved or dispersed electrolyte slurry described in step (1) to an argon atmosphere with a water value and an oxygen value of ≤0.1ppm. in 80 μL cm -2 The coating amount of the electrolyte slurry described in the step (1) is coated on the metal lithium sheet surface, such as figure 1 Coating was carried out according to the coating process shown, and after uniform coat...
Embodiment 2
[0059] A method for preparing a lithium metal negative electrode-electrolyte integrated material, comprising the following steps:
[0060] (1) Weigh 0.4g of dried LiTFSI, dissolve it in 9g of tetrahydrofuran and stir at 25°C for 12h, and obtain a uniform electrolyte salt solution after the electrolyte salt is completely dissolved; weigh 0.9g of dried PVDC powder and 0.10g of dried PEO powder (Mw=600,000) was added to the prepared homogeneous electrolyte salt solution and stirred at 25°C for 12 hours to form PVDC-PEO-LiTFSI electrolyte slurry.
[0061] (2) Transfer the homogeneously dissolved or dispersed electrolyte slurry described in step (1) to an argon atmosphere with a water value and an oxygen value of ≤0.1ppm. in 90 μL cm -2 The coating amount of the electrolyte slurry described in the step (1) is coated on the metal lithium sheet surface, such as figure 1 Coating was carried out according to the coating process shown, and after uniform coating, tetrahydrofuran was vo...
Embodiment 3
[0064] A method for preparing a lithium metal negative electrode-electrolyte integrated material, comprising the following steps:
[0065] (1) Weigh 0.4g of dried LiTFSI, dissolve it in 9g of tetrahydrofuran and stir at 25°C for 12h, and obtain a uniform electrolyte salt solution after the electrolyte salt is completely dissolved; weigh 0.9g of dried PVDC powder and 0.10g of dried PVDF powder was added to the prepared homogeneous electrolyte salt solution and stirred at 25°C for 12 hours to form PVDC-PVDF-LiTFSI electrolyte slurry.
[0066] (2) Transfer the homogeneously dissolved or dispersed electrolyte slurry described in step (1) to an argon atmosphere with a water value and an oxygen value of ≤0.1ppm. in 90 μL cm -2 The coating amount of the electrolyte slurry described in the step (1) is coated on the metal lithium sheet surface, such as figure 1 Coating was carried out according to the coating process shown, and after uniform coating, tetrahydrofuran was volatilized a...
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