Ionic liquid-enabled high-energy li-ion batteries
AssigneeThe Regents of the University of Colorado, a body corporate
InventorsSe-Hee Lee, Daniela Molina Piper, Tyler Evans
Life of this patent
Estimating the term…
Abstract
Various embodiments of the present disclosure describe energy storage devices. In one example, an energy storage device includes an anode having a plurality of active material particles, a cathode having a transition metal oxide material, and an electrolyte including a room temperature ionic liquid to couple the anode to the cathode. Each of the plurality of anode active material particles have a particle size of between about one micrometer and about fifty micrometers. One or more of the plurality of anode active material particles are enclosed by and in contact with a membrane coating permeable to lithium ions.
Claims24
An energy storage device comprising:
- an anode including a plurality of active material particles, each of the plurality of active material particles having a particle size of between about one micrometer and about fifty micrometers, wherein one or more of the plurality of active material particles are enclosed by and in contact with a membrane coating permeable to lithium ions;
- a cathode including a transition metal oxide material;
- and
- an electrolyte including a room temperature ionic liquid coupling the anode to the cathode.
A method for cycling an anode in an energy storage device, comprising:
- providing the energy storage device with an anode including a plurality of active material particles having particle sizes of between about one micrometer and about fifty micrometers, wherein one or more of the plurality of active material particles are enclosed by and in contact with a membrane coating permeable to lithium ions;
- and
- initiating a reaction in the energy storage device by:
- discharging the energy storage device;
- and
- recharging the energy storage device,
- wherein discharging and recharging the energy storage device pulverizes the plurality of active material particles into a plurality of pulverized particles having particle sizes of between about 10 nanometers and about 500 nanometers, and
- wherein one or more of the plurality of pulverized particles are enclosed by and in contact with the membrane coating.
A method for cycling a cathode in an energy storage device, comprising:
- providing the energy storage device with a cathode including a transition metal oxide material and an electrolyte including a room temperature ionic liquid;
- initiating a reaction in the energy storage device by:
- charging the energy storage device;
- and
- discharging the energy storage device,
- wherein charging and discharging the energy storage device forms a film including fluorine, sulfur, and at least one of oxygen, carbon, phosphorus, and lithium on substantially all of the transition metal oxide material, the film blocking surface degradation of the transition metal oxide material by the electrolyte.
Dependencies are inferred from the claim text.