A metal alloy for use in a wire included in an electrochemical cell is disclosed having an amorphous structure, microcrystalline grains, or grains that are sized less than about one micron. In various embodiments, the microcrystalline grains are not generally longitudinally oriented, are variably or
A metal alloy for use in a wire included in an electrochemical cell is disclosed having an amorphous structure, microcrystalline grains, or grains that are sized less than about one micron. In various embodiments, the microcrystalline grains are not generally longitudinally oriented, are variably oriented, or are randomly oriented. In some embodiments, the microcrystalline grains lack uniform grain size or are variably sized. In some embodiments, the microcrystalline grains have an average grain size of less than or equal to 5 microns. In some embodiments, the metal alloy lacks long-range crystalline order among the microcrystalline grains. In some embodiments, the wire is used in a substrate used in the electrochemical cell. In some embodiments, the metal alloy is formed using a co-extrusion process comprising warming up the metallic alloy and applying pressure and simultaneously passing a core material through a die to obtain a composite structure.
대표청구항▼
1. A composite wire for use in a current collector of an electrochemical cell, comprising: a glass fiber core comprising at least one glass fiber; anda lead alloy coating extruded onto the glass fiber core,wherein the lead alloy coating comprises nanocrytalline grains having an average grain size of
1. A composite wire for use in a current collector of an electrochemical cell, comprising: a glass fiber core comprising at least one glass fiber; anda lead alloy coating extruded onto the glass fiber core,wherein the lead alloy coating comprises nanocrytalline grains having an average grain size of less than or equal to about 5 nanometers, andwherein the nanocrystalline grains lack long-range crystalline order. 2. The composite wire of claim 1, wherein the composite wire forms a substrate of the current collector in the electrochemical cell. 3. The composite wire of claim 1, wherein the nanocrystalline grains are not generally longitudinally oriented, are variably oriented, or are randomly oriented. 4. The composite wire of claim 1, wherein the nanocrystalline grains lack uniform grain size. 5. The composite wire of claim 1, wherein the nanocrystalline grains are variably sized. 6. A conductive substrate used in an electrochemical cell, comprising: a plurality of composite wires forming a structure for supporting active material, each composite wire comprising: a glass fiber core comprising at least one glass fiber; anda lead alloy coating extruded onto the glass fiber core,wherein the lead alloy coating comprises nanocrytalline grains having an average grain size of less than or equal to about 5 nanometers, andwherein the nanocrystalline grains lack long-range crystalline order. 7. The conductive substrate of claim 6, wherein the conductive substrate is embedded in one or more active materials. 8. The conductive substrate of claim 7, wherein the conductive substrate includes a first portion embedded in a first active material. 9. A method for forming an electrode for an electrochemical energy storage device, comprising: forming a glass fiber core comprising at least one glass fiber;heating a lead alloy to a point below its melting point, the heated lead alloy having a flowable form;applying pressure to the heated lead alloy;extruding the lead alloy onto the glass fiber core to form a composite wire by simultaneously passing the glass fiber core and the heated lead alloy through a die;cooling the composite wire to form a lead alloy coating on the glass fiber core, the solid lead alloy coating comprising nanocrystalline grains having an average grain size of less than or equal to about 5 nanometers, the nanocrystalline grains lacking long-range crystalline order;forming a current collector using the composite wire, the current collector forming a substrate for active material; anddisposing active material for the electrode on a portion of the grid structure of the current collector. 10. The method of claim 9, wherein the lead alloy includes one or more glass-forming elements selected from groups I-VIII of the periodic table of elements. 11. The method of claim 10, wherein an amount of the glass-forming elements is equal to or less than 1% in weight of the lead alloy. 12. The method of claim 9, wherein the cooling of the composite wire further comprising quenching the extruded lead alloy by supercooling. 13. The method of claim 12, wherein a cooling rate of the quenching is at or above 1,000,000 K/s.
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