Hybrid Energy Storage Device Production
AssigneeCf Traverse LLC
InventorRonald A. Rojeski
Life of this patent
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Abstract
A novel hybrid lithium-ion anode material based on coaxially coated Si shells on vertically aligned carbon nanofiber (CNF) arrays. The unique cup-stacking graphitic microstructure makes the bare vertically aligned CNF array an effective Li+ intercalation medium. Highly reversible Li+ intercalation and extraction were observed at high power rates. More importantly, the highly conductive and mechanically stable CNF core optionally supports a coaxially coated amorphous Si shell which has much higher theoretical specific capacity by forming fully lithiated alloy. Addition of surface effect dominant sites in close proximity to the intercalation medium results in a hybrid device that includes advantages of both batteries and capacitors.
Claims22
A method of producing an energy storage device, the method comprising:
- providing a conductive substrate;
- growing support filaments on the substrate;
- applying intercalation material to the support nanofibers, the intercalation material being configured for intercalation of charge carriers;
- and
- applying a plurality of surface effect dominant sites in close proximity to the intercalation material.
A method of producing an anode, the method comprising:
- providing a conductive substrate;
- mixing a binding material, surface effect dominant sites and intercalation material, the surface effect dominant sites being configured to accept electrons from charge caal iers at a first reaction potential and the intercalation material being configured to accept the charge carriers or electrons from the charge carriers at a second reaction potential;
- and
- applying the binding material, surface effect dominant sites and intercalation material to the substrate.
A method of producing an energy storage device, the method comprising:
- providing a conductive substrate;
- providing support filaments;
- applying intercalation material to the support filaments, the intercalation material being configured for intercalation of charge carriers;
- and
- adding surface effect dominant sites to the support filaments.
Dependencies are inferred from the claim text.