Carbon nanotubes—graphene hybrid structures for separator free silicon-sulfur batteries
AssigneeCalifornia Institute of Technology
InventorsAdrianus I. Aria, Morteza Gharib
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Abstract
Provided herein are electrochemical systems and related methods of making and using electrochemical systems. Electrochemical systems of the invention implement novel cell geometries and composite carbon nanomaterials based design strategies useful for achieving enhanced electrical power source performance, particularly high specific energies, useful discharge rate capabilities and good cycle life. Electrochemical systems of the invention are versatile and include secondary lithium ion cells, useful for a range of important applications including use in portable electronic devices.
Claims15
An electrochemical cell comprising:
- a negative electrode comprising a first assembly of carbon nanotubes connected to a first current collector, wherein the first assembly of carbon nanotubes supports an anode active material;
- a positive electrode comprising a second assembly of carbon nanotubes connected to a second current collector, wherein the second assembly of carbon nanotubes supports a cathode active material;
- and
- an electrolyte provided between the positive electrode and the negative electrode, the electrolyte capable of conducting charge carriers,
- wherein said first assembly of carbon nanotubes and said second assembly of carbon nanotubes are physically separated from each other by at least 10 μm by a void region, wherein the void region is occupied by the electrolyte.
Dependencies are inferred from the claim text.