Method for Producing an Electrochemical Cell Comprising a Lithium Electrode, and Electrochemical Cell

Abstract

The invention relates to a method for producing an electrochemical cell (10) for a solid-state battery comprising a negative electrode (12), a positive electrode (14) and a lithium-ion-conducting solid electrolyte (16) arranged between the negative electrode and the positive electrode, wherein the negative electrode (12) comprises a layer of metallic lithium (24) which directly adjoins the solid electrolyte (16). In order to produce the electrochemical cell (10), the layer of metallic lithium (24) is heated until it softens before being joined together with the solid electrolyte (16). An electrochemical cell (10) according to the invention comprises the negative electrode (12) comprising a layer of metallic lithium (24) which directly adjoins the solid electrolyte (16), and a layer of a lithium-metal alloy (26) on the layer of metallic lithium.

Description

technical field

[0001] The invention relates to a method for producing an electrochemical cell having a metallic lithium electrode and an electrochemical cell produced according to this method, which are used in particular in solid-state batteries. Background technique

[0002] Lithium-ion batteries are already used in many mobile devices. Furthermore, these batteries can also be used in hybrid and electric vehicles and for storing electricity from wind or solar installations. These batteries can be used as primary batteries for single use, or can be constructed as reusable secondary batteries (accumulators).

[0003] Lithium-ion batteries generally consist of one or more electrochemical cells with a negative graphite electrode (anode during discharge) with an electrical conductor composed of copper, so The electrochemical cell has a positive electrode (cathode during discharge) consisting of a semi-metal oxide layer, the positive electrode has an electrical conductor such...

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