Solid-state electrolyte and preparation method thereof, and secondary battery
OwnerQiang MA, Haobin WU +2inventors
InventorsQiang MA, Haobin WU, Yifei XU, Xiang HONG
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Abstract
Embodiments of this application provide a solid-state electrolyte. The solid-state electrolyte includes a porous coordination polymer having an unsaturated metal site, an anionic group coordinated with and grafted on the unsaturated metal site, and a cation bound with the anionic group. The anionic group includes one or more substituted carboxylate anionic groups and/or one or more substituted sulfonate anionic groups. The cation includes one or more of a lithium ion, a sodium ion, a potassium ion, a magnesium ion, a zinc ion, and/or an aluminum ion.
Claims20
A solid-state electrolyte, wherein the solid-state electrolyte comprises a porous coordination polymer having an unsaturated metal site, an anionic group coordinated with and grafted on the unsaturated metal site, and a cation bound with the anionic group;
- the anionic group comprises at least one of a substituted carboxylate anionic group or a substituted sulfonate anionic group;
- and the cation comprises at least one of a lithium ion, a sodium ion, a potassium ion, a magnesium ion, a zinc ion, or an aluminum ion.
A preparation method of a solid-state electrolyte, comprising:
- making a mixed slurry by using a coordination polymer electrolyte, performing coating by using the mixed slurry to form a membrane, and performing drying to obtain a solid-state electrolyte, wherein the coordination polymer electrolyte comprises a porous coordination polymer having an unsaturated metal site, an anionic group coordinated with and grafted on the unsaturated metal site, and a cation bound with the anionic group;
- the anionic group comprises at least one of a substituted carb oxyl ate anionic group or a substituted sulfonate anionic group;
- and the cation comprises at least one of a lithium ion, a sodium ion, a potassium ion, a magnesium ion, a zinc ion, or an aluminum ion.
A secondary battery, comprising a positive electrode plate, a metal negative electrode plate, and an electrolyte, wherein the electrolyte comprises a solid-state electrolyte wherein the solid-state electrolyte comprises a porous coordination polymer having an unsaturated metal site, an anionic group coordinated with and grafted on the unsaturated metal site, and a cation bound with the anionic group;
- the anionic group comprises at least one of a substituted carboxylate anionic group or a substituted sulfonate anionic group;
- and the cation comprises at least one of a lithium ion, a sodium ion, a potassium ion, a magnesium ion, a zinc ion, or an aluminum ion.
Dependencies are inferred from the claim text.