Energy Storage Devices Including Silicon and Graphite
First Claim
1. An energy storage system comprising:
- a first electrode disposed in a first region of electrolyte and includinga substrate, andan ion absorbing material attached to the substrate the ion adsorbing material including silicon and graphite;
a separator configured to separate the first region and a second region of electrolyte; and
a second electrode disposed in the second region of electrolyte, the first and second electrodes and separator configured to operate as an energy storage device.
5 Assignments
0 Petitions
Accused Products
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.
13 Citations
24 Claims
-
1. An energy storage system comprising:
-
a first electrode disposed in a first region of electrolyte and including a substrate, and an ion absorbing material attached to the substrate the ion adsorbing material including silicon and graphite; a separator configured to separate the first region and a second region of electrolyte; and a second electrode disposed in the second region of electrolyte, the first and second electrodes and separator configured to operate as an energy storage device. - View Dependent Claims (2, 3)
-
-
5. An energy storage system comprising:
-
a first electrode disposed in a first region of electrolyte and including a substrate, an ion absorbing material attached to the substrate, the ion adsorbing material including silicon and graphite, and an over-layer coating the ion absorbing material; a separator configured to separate the first region and a second region of electrolyte; and a second electrode disposed in the second region of electrolyte, the first and second electrodes and separator configured to operate as an energy storage device. - View Dependent Claims (4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. An energy storage system comprising:
-
a first electrode disposed in a first region of electrolyte and including an array of support filaments, a substrate, and an ion absorbing material attached to the substrate by the support filaments, the ion adsorbing material including silicon and graphite; a separator configured to separate the first region and a second region of electrolyte; and a second electrode disposed in the second region of electrolyte, the first and second electrodes and separator configured to operate as an energy storage device. - View Dependent Claims (19, 20, 21, 22, 23, 24)
-
Specification