Sulfide electrolytes and efficient methods for making the same
AssigneeThe Florida State University Research Foundation, Inc.
InventorsYan-Yan Hu, Bright Ogbolu, Thilina Nadeemali Dikella Dikella Gamaralalage, Pawan Ojha
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Abstract
In accordance with the purpose(s) of the present disclosure, as embodied and broadly described herein, the disclosure, in one aspect, relates to sulfide solid electrolytes and synthesis of sulfide solid electrolytes. The electrolytes have the general formula AzMwSvCl4-yXy and exhibit good ionic conductivity. The electrolytes are relatively cost-effective to produce, as they contain naturally abundant elements, and can be synthesized via a relatively fast synthesis route. The electrolytes can be a component of different types of batteries or sensors for ion detection.
Claims20
A compound having the formula AzMwSvCl4-yXy, wherein
- A is Li, Na, K, or any combination thereof;
- M is Zr, Hf, or a combination thereof;
- X is Br, I, or a combination thereof;
- z is greater than zero to 4.0;
- v is greater than zero to 2.0;
- y is greater than or equal to zero to 4.0;
- and
- the sum (z+4w−2v) is equal to 4.
A method for making a compound having the formula AzMwSvCl4-yXy, wherein
- A is Li, Na, K, or any combination thereof;
- M is Zr, Hf, or a combination thereof;
- X is Br, I, or a combination thereof;
- z is greater than zero to 4.0;
- v is greater than zero to 2.0;
- y is greater than or equal to zero to 4.0;
- and
- the sum (z+4w−2v) is equal to 4;
- the method comprising:
- (a) combining in the solid state the following components:
- (i) A2S selected from the group consisting of Li2S, Na2S, K2S, and any combination thereof;
- (ii) MCl4 selected from the group consisting of ZrCl4, HfCl4, and a combination thereof;
- and (iii) MX4 selected from the group consisting of ZrBr4, Zrl4, HfBr4, Hfl4, and any combination thereof, to produce a precursor mixture;
- and
- (b) mixing the precursor mixture by mechanochemical milling.
Dependencies are inferred from the claim text.