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US 12,700,614 B2Granted
Solid-state electrolyte for solid-state rechargeable sodium-ions batteries
AssigneeUmicore AG & Co. KG
InventorsSeung-Tae Hong, Jeyne Lyoo
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Abstract
The present invention provides a solid-state electrolyte for solid-state rechargeable sodium-ions batteries comprising: —Na in a molar content x of at least 3.50 and of at most 4.00, —Sn in a molar content y of at least 0.50 and of at most 1.00, —As in a molar content z superior to 0.00, preferably of at least 0.10, and of at most 0.50, —S in a molar content of 4.00.
Claims12
A solid-state electrolyte for solid-state rechargeable sodium-ions batteries comprising:
- Na in a molar content x of at least 3.50 and of at most 4.00,
- Sn in a molar content y of at least 0.50 and of at most 1.00,
- As in a molar content z of 0.21≤z≤0.29, and
- S in a molar content of 4.00.
1 more element
A process for manufacturing the solid-state electrolyte according to any of the preceding claims, said process comprising:
- a first step of mixing Na2S, SnS2, As2S3, and S powder in an inert atmosphere so as to obtain a mixture;
- a second step of pressing said mixture under a pressure between 50 and 400 MPa, so as to obtain a pellet;
- and
- a third step of firing said pellet at a temperature between 300° C. and 700° C. during a period of time comprised between 1 and 20 hours.
1 more element
Dependencies are inferred from the claim text.