Lithium ion battery solid electrolyte and preparation method thereof
A solid electrolyte, lithium ion battery technology, applied in the field of lithium ion batteries, can solve the problems of unstable electrochemical properties, hinder the practical application of all solid state batteries, etc., achieve good lithium ion conductivity, excellent lithium ion conductivity, diffusion activation low effect
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Embodiment 1
[0036] The lithium ion battery solid electrolyte of the present embodiment, chemical composition is Li 6 P.S. 5 I, structure see figure 1 .
[0037] The preparation method of the lithium-ion battery solid electrolyte of the present embodiment comprises the following steps:
[0038] 1) Dry sulfur powder and phosphorus powder in a vacuum drying oven for 24 hours; The molar ratio is 6:1:5:1, and the above-mentioned materials are evenly mixed and put into a ball mill jar, and 15 zirconia ball mill balls with a diameter of 10mm are put into the jar and sealed tightly;
[0039] 2) Take the ball mill tank out of the glove box and put it into the omnidirectional planetary ball mill for ball milling; set the speed of the ball mill to 350rpm, grind the ball mill for 20 minutes every time, let it stand for cooling for 5 minutes, and the total effective ball milling time is 10h;
[0040] 3) Take out the ball-milled powder and heat-treat it in a vacuum tube furnace. The heat-treatment ...
Embodiment 2
[0042] The lithium ion battery solid electrolyte of the present embodiment, chemical composition is Li 6 P.S. 4 TeCl.
[0043] The preparation method of the lithium-ion battery solid electrolyte of the present embodiment comprises the following steps:
[0044] 1) Dry sulfur powder, phosphorus powder and lithium chloride powder in a vacuum oven for 24 hours; The molar ratio of tellurium powder (Te) and lithium chloride (LiCl) powder is 5:1:4:1:1 and mixed evenly, then put into the ball mill jar, and put 15 zirconia balls with a diameter of 10mm into the jar , tightly sealed;
[0045] 2) Take the ball mill jar out of the glove box and put it into the omnidirectional planetary ball mill for ball milling; set the speed of the ball mill to 300rpm, grind the ball mill for 20 minutes every time, let it stand for cooling for 5 minutes, and the total effective ball milling time is 10h;
[0046] 3) Take out the ball-milled powder and heat-treat it in a vacuum tube furnace. The heat-...
Embodiment 3
[0048] The lithium ion battery solid electrolyte of the present embodiment, chemical composition is Li 6 PTe 5 Cl.
[0049] The preparation method of the lithium-ion battery solid electrolyte of the present embodiment comprises the following steps:
[0050] 1) Dry sulfur powder, phosphorus powder, and lithium chloride powder in a vacuum oven for 24 hours; The molar ratio of lithium chloride (LiCl) powder is 5:1:5:1 and evenly mixed and put into a ball mill jar, and 15 zirconia ball mill balls with a diameter of 10 mm are put into the jar and sealed tightly;
[0051] 2) Take the ball mill jar out of the glove box and put it into the omnidirectional planetary ball mill for ball milling; set the speed of the ball mill to 300rpm, grind the ball mill for 20 minutes every time, let it stand for cooling for 5 minutes, and the total effective ball milling time is 10h;
[0052] 3) Take out the ball-milled powder and heat-treat it in a vacuum tube furnace. The heat-treatment temperat...
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