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US 2018/0123181 A1Published application
All-solid battery with stable negative electrode interface
AssigneeHyundai Motor Company
InventorsSam Ick Son, Eun Ji Kwon
Life of this patent
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Abstract
An all-solid battery that stably maintains an interface between a solid electrolyte layer and a negative electrode long-term is provided. Specifically, the interface between the solid electrolyte layer and the negative electrode can be stably maintained long-term by using a lithium metal as the negative electrode material and disposing a sacrificial layer between the solid electrolyte layer and the negative electrode so that the negative electrode and the sacrificial layer can form an alloy.
Claims9
An all-solid battery having a stable negative electrode interface comprising:
- a positive electrode;
- a negative electrode composed of lithium metal;
- a solid electrolyte layer disposed between the positive electrode and the negative electrode;
- and
- a sacrificial layer disposed between the solid electrolyte layer and the negative electrode;
- wherein the sacrificial layer is formed of a material having the following properties:
- (a) the material has lithium ion conductivity;
- and
- (b) the solid solubility of lithium metal in the sacrificial layer material is higher than solid solubility of the sacrificial layer material in the lithium metal.
6 more elements
Dependencies are inferred from the claim text.