Reinforced metal foil electrode
AssigneeOxis Energy Limited
InventorsVladimir Kolosnitsyn, Elena Karaseva
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Abstract
A metal foil electrode comprising i) a reinforcement layer formed from a porous substrate, and ii) first and second layers of metal foil formed comprising lithium and/or sodium, wherein the reinforcement layer is disposed between the first and second metal foil layers and bonded (preferably pressure bonded) together to form a composite structure having a thickness of 100 microns or less.
Claims22
A metal foil electrode comprising
- i) a reinforcement layer formed from a porous substrate, and
- ii) first and second layers of metal foil formed comprising lithium and/or sodium, wherein the reinforcement layer is disposed between the first and second metal foil layers and bonded (preferably pressure bonded) together to form a composite structure having a thickness of 100 microns or less.
A metal foil as claimed in any one of the preceding claims, wherein the porous substrate is formed from a non-conducting material.
A metal foil as claimed in any one of the preceding claims, wherein the porous substrate is formed from a fibrous material.
A metal foil as claimed in any one of the preceding claims, wherein the fibrous material is a material formed from polymer fibres.
A metal foil electrode as claimed in any one of the preceding claims, wherein the porous substrate is formed of a material selected from at least one of non-woven fabric, woven fabric and polymer mesh.
A metal foil electrode as claimed in any one of the preceding claims, wherein the reinforcement layer has a density of less than 6 g/cm3.
An electrochemical cell comprising a metal foil electrode as claimed in any one of the preceding claims.
A method of forming a metal foil electrode, which comprises:
- providing a reinforcement layer formed from a porous substrate,
- providing first and second layers of metal foil formed from lithium and/or sodium,
- placing the reinforcement layer between said first and second layers of metal foil, and
- applying pressure to bond the layers together to form a composite structure,
- whereby the thickness of the composite structure is at least 25% less than the sum of the initial thicknesses of the reinforcement layer, first layer of metal foil and second layer of metal foil.
Dependencies are inferred from the claim text.