High capacity electrodes
AssigneeSouth Dakota Board of Regents
InventorsHaiping Hong, David R. Salem, Gregory Lee Christensen, Ruidong Yang
Life of this patent
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Abstract
An electrode comprises carbon nanoparticles and at least one of metal particles, metal oxide particles, metalloid particles and/or metalloid oxide particles. A surfactant attaches the carbon nanoparticles and the metal particles, metal oxide particles, metalloid particles and/or metalloid oxide particles to form an electrode composition. A binder binds the electrode composition such that it can be formed into a film or membrane. The electrode has a specific capacity of at least 450 mAh/g of active material when cycled at a charge/discharge rate of about 0.1C.
Claims30
An electrode comprising:
- (a) carbon nanoparticles;
- (b) at least one of metal particles, metal oxide particles, metalloid particles and metalloid oxide particles;
- (c) a surfactant for attaching said carbon nanoparticles to said at least one of metal particles, metal oxide particles, metalloid particles and metalloid oxide particles to form an electrode composition;
- (d) a binder for forming said electrode composition into a film or membrane;
- wherein said electrode has a specific capacity of at least 450 mAh/g of active material when cycled at a charge/discharge rate of about 0.1C.
A battery comprising an anode, a cathode, and an electrolyte interposed therebetween, wherein said anode comprises:
- (a) carbon nanoparticles;
- (b) at least one of metal particles, metal oxide particles, metalloid particles and metalloid oxide particles;
- (c) a surfactant for attaching said carbon nanoparticles to said at least one of metal particles, metal oxide particles, metalloid particles and metalloid oxide particles to form an anode composition;
- (d) a binder for forming said anode composition into a film or membrane;
- wherein said anode has a specific capacity of at least 450 mA-h/g of active material when cycled at a charge/discharge rate of about 0.1C.
An electrode prepared by the process of:
- (a) combining with a surfactant carbon nanoparticles and at least one of metal particles, metal oxide particles, metalloid particles and metalloid oxide particles to form an electrode composition;
- (b) combining said electrode composition with a binder;
- (c) applying said electrode composition as a layer on a current collector, or forming said electrode composition as a free-standing film or membrane;
- wherein said electrode has a specific capacity of at least 450 mA-h/g of active material when cycled at a charge/discharge rate of about 0.1C.
A method of preparing an electrode comprising:
- combining with a surfactant carbon nanoparticles and at least one of metal particles, metal oxide particles, metalloid particles and metalloid oxide particles to form an electrode composition;
- combining said electrode composition with a binder to form the electrode composition into a film or membrane;
- whereby said electrode has a specific capacity of at least 450 mA-h/g of active material when cycled at a charge/discharge rate of about 0.1C.
Dependencies are inferred from the claim text.