High-stability lithium-gallium-sulfur-oxygen solid electrolyte, preparation method and application thereof
A gallium sulfide solid and high stability technology, which is applied in the field of high stability lithium gallium sulfide solid electrolyte and its preparation, can solve the problems of air and water sensitivity, and achieve a simple and easy preparation method, which is convenient for large-scale industrialization Production, the effect of high ionic conductivity
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[0044] The embodiment of the present invention provides a preparation method of the above-mentioned lithium gallium oxysulfide solid electrolyte, the main steps of which are as follows figure 1 shown, including:
[0045] Step 110, dissolving the required gallium nitrate and sulfur-containing organic matter in ethanol according to the first ratio to obtain a mixed solution;
[0046] Wherein, the sulfur-containing organic matter includes thioacetamide and / or thiourea, and the gallium nitrate and the sulfur-containing organic matter are added according to a Ga:S molar ratio of 1:1˜1:10.
[0047] Step 120, placing the mixed solution in a muffle furnace pre-heated to the holding temperature and keeping it warm for a period of time, the mixed solution is thermally decomposed to obtain a black sulfur oxide precursor;
[0048] Wherein, the temperature of heat preservation is 300° C. to 800° C., and the time of heat preservation is 0 to 2 hours.
[0049] Step 130, mixing the sulfur o...
Embodiment 1
[0058] This embodiment provides a lithium gallium oxysulfide solid electrolyte, which is prepared by the following method, and the specific steps are as follows:
[0059] (1) Dissolving gallium nitrate and thioacetamide in ethanol at an elemental molar ratio of Ga:S=1:4 to obtain a mixed solution.
[0060] (2) The above mixed solution was placed in a muffle furnace preheated to 400° C. and kept warm for 10 minutes. The mixed solution was decomposed by heat to obtain a black sulfur oxide precursor.
[0061] (3) Mix the above-mentioned sulfur oxide precursor with sulfur powder and lithium sulfide in an argon glove box, wherein the mass ratio of sulfur powder to sulfur oxide precursor is 1:8, lithium sulfide and sulfur oxide precursor The mass ratio of the mixture was 1:8, and the mixture was packed into a quartz tube and evacuated, and then the tube was sealed. The sealed quartz tube was placed in a muffle furnace, calcined at 600° C. for 4 hours, and finally cooled to room tem...
Embodiment 2
[0067] This embodiment provides a lithium gallium oxysulfide solid electrolyte, which is prepared by the following method, and the specific steps are as follows:
[0068] (1) Dissolving gallium nitrate and thioacetamide in ethanol at an elemental molar ratio of Ga:S=1:8 to obtain a mixed solution.
[0069] (2) The above mixed solution was placed in a muffle furnace preheated to 500° C. and kept warm for 10 minutes, the mixed solution was thermally decomposed to obtain a black sulfur oxide precursor.
[0070] (3) Mix the above-mentioned sulfur oxide precursor with sulfur powder and lithium sulfide in an argon glove box, wherein the mass ratio of sulfur powder to sulfur oxide precursor is 1:8, lithium sulfide and sulfur oxide precursor The mass ratio of the mixture was 1:4, the mixture was packed into a quartz tube and vacuumized, and then the tube was sealed. The sealed quartz tube was placed in a muffle furnace, calcined at 600° C. for 4 hours, and finally cooled to room temp...
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Abstract
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