Process for manufacturing a monolithic all-solid-state battery
AssigneeI-Ten
InventorFabien Gaben
Life of this patent
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Abstract
An all-inorganic, all-solid-state monolithic Li-ion battery, the monolithic body having a plurality of elementary cells, and which is produced by producing dense electrode deposits directly on the two faces of a substrate acting as a battery current collector, and by depositing an all-solid-state dense electrolyte layer on at least one of the dense electrode deposits obtained.
Claims25
A process for producing all-inorganic, all-solid-state batteries, said all-inorganic, all-solid-state batteries including at least one dense first layer containing anode materials (“anode layer”), at least one dense second layer containing solid electrolyte materials (“electrolyte layer”), and at least one dense third layer containing cathode materials (“cathode layer”) in order to obtain an all-solid-state battery having an assembly of a plurality of elementary cells, said process comprising:
- (a) depositing the dense anode layer and the dense cathode layer on respective conductive substrates, said conductive substrates being capable of serving as an anode and cathode current collector, respectively;
- (b) depositing the solid dense electrolyte layer on at least one of the two layers obtained in step (a);
- (c) depositing a layer of nanoparticles (“nanoparticles layer”) of at least one Ms inorganic bonding material, by electrophoresis, on at least one of the dense layers obtained in step (a) and/or (b), wherein the depositions of the layers of steps (a), (b) and (c) are not all performed by electrophoresis, and the melting point of the nanoparticle layer is less than that of the layers with which it is in contact;
- (d) stacking the layer obtained in step (c) face-to-face with a layer obtained in step (a), (b) or (c);
- (e) performing a mechanical compression promoting contact between said two layers stacked face-to-face in order to obtain an all-solid-state assembly of elementary cells capable of functioning as a battery.
An all-inorganic, all-solid-state battery having an assembly of a plurality of elementary cells, the all-inorganic, all-solid-state battery comprising:
- at least one dense first layer containing anode materials (“anode layer”) deposited on a first conductive substrate which is capable of serving as an anode current collector;
- at least one dense third layer containing cathode materials (“cathode layer”) deposited on a second conductive substrate which is capable of serving as a cathode current collector;
- at least one dense second layer containing solid electrolyte materials (“electrolyte layer”) deposited on at least one of the anode layer and the cathode layer;
- and
- a layer of nanoparticles (“nanoparticles layer”) of at least one Ms inorganic bonding material, deposited by electrophoresis on at least one of the anode layer, the cathode layer, and the electrolyte layer,
- wherein:
- the depositions of the anode layer, the cathode layer, the electrolyte layer, and the nanoparticles layer are not all performed by electrophoresis,
- the melting point of the nanoparticle layer is less than that of one the layers with which it is in contact;
- the anode layer, the cathode layer, the electrolyte layer, and the nanoparticles layer are arranged face-to-face in a stack;
- the stack is mechanically compressed to promote contact between the layers stacked face-to-face.
An all-solid-state multilayer battery having an assembly of a plurality of elementary cells, the all-solid-state multilayer battery comprising:
- at least one dense first layer containing anode materials (“anode layer”) deposited on a first conductive substrate which is capable of serving as an anode current collector;
- at least one dense third layer containing cathode materials (“cathode layer”) deposited on a second conductive substrate which is capable of serving as a cathode current collector;
- at least one dense second layer containing solid electrolyte materials (“electrolyte layer”) deposited on at least one of the anode layer and the cathode layer;
- and
- a layer of nanoparticles (“nanoparticles layer”) of at least one Ms inorganic bonding material, deposited by electrophoresis on at least one of the anode layer, the cathode layer, and the electrolyte layer,
- wherein:
- the depositions of the anode layer, the cathode layer, the electrolyte layer, and the nanoparticles layer are not all performed by electrophoresis,
- the melting point of the nanoparticle layer is less than that of one the layers with which it is in contact;
- the anode layer, the cathode layer, the electrolyte layer, and the nanoparticles layer are arranged face-to-face in a stack;
- the stack is mechanically compressed to promote contact between the layers stacked face-to-face.
Dependencies are inferred from the claim text.