TiS2 composite positive electrode and all-solid-state battery device
An all-solid-state battery, composite cathode technology, applied in electrical components, battery electrodes, secondary batteries, etc., can solve the problems of low cycle times, low electronic conductivity of positive active materials, low ionic conductivity, etc., and achieve ultra-long cycles. The effect of capacity and life, good lithium supplementation and moisture absorption, high ionic conductivity
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[0049] The invention will be further explained by the following drawings and specific examples, but it should be understood that these examples are only for more detailed explanation, and should not be construed as limiting the invention in any way, that is, not intended to limit the scope of protection of the invention.
[0050] 1. Development of sulfide solid electrolyte
[0051] At first, the invention developed a new sulfide solid electrolyte material of sulfur-silver-germanium ore system without P element, Li 7+y-z M y As 1-y S 6-z X z (M=Si、Ge、Sn、Ti、Zr,X=F、Cl、Br、I,0≤y≤1,0≤z≤2)。 The ionic conductivity of the material can be increased to 10. -2 S / cm or more, the wet air is stable (the hydrogen sulfide production is low, and the structure and properties can be recovered by heating), and at the same time, the in-situ lithium replenishing agent (Li 2 S, LiI), which is different from the lithium-supplementing material added separately, can improve the first-week coulombic efficien...
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