Methods of Reducing Occurrences of Short Circuits And/Or Lithium Plating in Batteries
AssigneeEnevate Corporation
InventorsFrederic C. Bonhomme, Steve Pierce
Life of this patent
Estimating the term…
Abstract
An example method of reducing short circuits from occurring in a battery can include providing a current collector coated with a safety layer. The method can include providing an electrochemically active material film on the safety layer such that the safety layer is configured to reduce exposure of the current collector to an opposing electrode. The method can also include adhering the electrochemically active material film to the current collector via the safety layer.
Claims73
A method of forming an electrode, the method comprising:
- providing a current collector;
- forming a safety layer on the current collector, the safety layer configured to reduce exposure of the current collector to an opposing electrode;
- and
- forming an electrochemically active material film on the safety layer such that the safety layer extends over an area of the current collector that the electrochemically active material film extends over and beyond, and
- pyrolyzing the electrochemically active material film to form a carbon phase that holds the film together.
A method of forming an electrode, the method comprising:
- providing a current collector;
- forming a safety layer on the current collector, the safety layer configured to reduce exposure of the current collector to an opposing electrode;
- and
- forming an electrochemically active material film on the safety layer, wherein the safety layer extends over an area of the current collector that the electrochemically active material film extends over and beyond, and wherein the electrochemically active material film comprises:
- a carbon phase that holds the film together;
- and
- silicon particles distributed within the carbon phase.
The method of claim 36, comprising adhering the electrochemically active material film to the current collector using the safety layer.
A method of forming an electrode, the method comprising:
- providing a current collector;
- forming a safety layer on the current collector that is configured to reduce exposure of the current collector to an opposing electrode;
- and
- forming an electrochemically active material film on the safety layer, wherein:
- the safety layer extends over an area of the current collector that the electrochemically active material film extends over and beyond;
- the electrochemically active material film comprises a carbon phase that holds the film together;
- and
- the carbon phase comprises hard carbon.
A method of forming an electrode, the method comprising:
- providing a current collector;
- forming a safety layer on the current collector that is configured to reduce exposure of the current collector to an opposing electrode;
- and
- forming an electrochemically active material film on the safety layer, wherein:
- the safety layer extends over an area of the current collector that the electrochemically active material film extends over and beyond;
- and
- the electrochemically active material film comprises porosity that is substantially free of material forming the safety layer.
A method of forming an electrode, the method comprising:
- providing a current collector;
- forming a safety layer on the current collector that is configured to reduce exposure of the current collector to an opposing electrode;
- and
- forming an electrochemically active material film on the safety layer, wherein:
- the safety layer extends over an area of the current collector that the electrochemically active material film extends over and beyond;
- and
- the safety layer in the aggregate is substantially electrically nonconductive.
Dependencies are inferred from the claim text.