Electrodeposition process for the manufacture of an electrode for a metial-ion battery
AssigneeNexeon Limited
InventorsPhil Rayner, Mike Lain, Jeremy Barker
Life of this patent
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Abstract
A method of depositing an active material for a metal ion battery comprising the steps of: providing a conductive material in an electrodeposition bath wherein the electrodeposition bath contains an electrolyte comprising a source of the active material; and electrodepositing the active material onto a surface of the conductive material.
Claims47
A method of forming a plurality of particles comprising an active material suitable for use in a metal ion battery, the method comprising the steps of:
- providing a working electrode in an electrodeposition bath wherein the electrodeposition bath contains an electrolyte comprising a source of the active material;
- electrodepositing the active material onto a surface of the working electrode, onto a surface of a conducting layer in electrical contact with the working electrode, or onto a surface of conductive particles in the electrolyte;
- and
- providing the particles comprising the active material, wherein the step of providing the particles comprises separation of the electrodeposited material from the working electrode or separation of the conductive particles carrying the electrodeposited active material from the working electrode.
A method according to claim any preceding claim wherein the working electrode is a rotating cylinder electrode.
A method according to any preceding claim wherein the step of providing the particles comprises treating the electrodeposited active material deposited onto the working electrode to form the particles.
A method according to any preceding claim comprising the step of etching the surface of the particles.
A method according to any preceding claim wherein the particles comprising the active material are particles active material have at least one dimension in the range of 0.5 nm-1 micron.
A method according to any preceding claim comprising the step of mixing the particles comprising the active material with a solvent to form a slurry.
A method according to any preceding claim wherein a gas is bubbled through the electrolyte during the electrodeposition.
A method according to any preceding claim wherein the electrodeposited active material is amorphous and wherein the amorphous active material is rendered at least partially crystalline by a heat treatment.
A method according to any preceding claim wherein a passivating film is formed on the electrodeposited active material.
A method of forming an electrode layer, the method comprising the step of depositing the particles comprising the active material according to any preceding claim onto a conductive material.
A method of forming particles comprising an active material suitable for a metal ion battery, the method comprising the steps of:
- providing a working electrode in an electrodeposition bath wherein the electrodeposition bath contains an electrolyte comprising a source of the active material;
- and
- electrodepositing the active material onto a surface of the working electrode;
- and
- separating the electrodeposited active material from the working electrode;
- and
- treating the active material separated from the working electrode to form particles having a mean average size smaller than the size of the removed material prior to said treatment.
A method of forming particles comprising an active material suitable for a metal ion battery, the method comprising the steps of:
- providing a working electrode in an electrodeposition bath wherein the electrodeposition bath contains an electrolyte comprising a source of the active material;
- and
- electrodepositing the active material into pores of a porous template in contact with the working electrode.
A method of forming particles comprising an active material suitable for a metal ion battery, the method comprising the steps of:
- providing conductive particles in an electrolyte of an electrodeposition bath wherein the electrolyte comprises a source of the active material;
- and
- electrodepositing the active material onto the conductive particles to at least partially coat the conductive particles.
A method of recycling elemental halogen comprising the steps of:
- generating elemental halogen by electrolytic reduction of a silicon halide during electrodeposition of silicon;
- and
- reacting the generated elemental halogen with a silicon oxide to generate further silicon halide.
Dependencies are inferred from the claim text.