Three-dimensional anode current collector for lithium batteries
AssigneeNissan North America, Inc.
InventorsJinwei Cao, Yunhui Gong
Life of this patent
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Abstract
A lithium metal battery has a cathode current collector, a cathode active material layer, an electrolyte, and an anode current collector host structure interfacing with the electrolyte. The anode current collector host structure comprises a conductive layer, a non-conductive layer on the conductive layer, and recesses formed through the non-conductive layer and into the conductive layer, each recess having an opening in the non-conductive layer with a width that is smaller than a largest width of the recess.
Claims20
A lithium metal battery, comprising:
- a cathode current collector;
- a cathode active material layer;
- an electrolyte;
- and
- an anode current collector host structure interfacing with the electrolyte, the anode current collector host structure comprising:
- a conductive layer;
- a non-conductive layer on the conductive layer;
- and
- recesses formed through the non-conductive layer and into the conductive layer, each of the recesses having an opening in the non-conductive layer with a width that is smaller than a largest width of a respective recess.
An anode current collector host structure configured to interface with an electrolyte, the anode current collector host structure comprising:
- a conductive layer of metal;
- a non-conductive layer formed on the conductive layer;
- and
- recesses formed across an entire cathode-facing surface of the non-conductive layer, through the non-conductive layer and into the conductive layer, each of the recesses having an opening in a cathode-facing surface of the non-conductive layer with a width that is smaller than a largest width of a respective recess, wherein the electrolyte at least partially fills the recesses.
A lithium metal battery, comprising:
- a cathode current collector;
- a cathode active material layer comprising a lithium transition metal oxide or a lithium transition metal phosphate;
- an electrolyte that is a liquid, gel, polymer or combination thereof;
- and
- an anode current collector host structure interfacing with the electrolyte, the anode current collector host structure comprising:
- a conductive layer of metal;
- a non-conductive layer formed on the conductive layer;
- and
- recesses formed through the non-conductive layer and into the conductive layer, each of the recesses having an opening on a cathode-facing surface of the non-conductive layer with a width that is smaller than a largest width of a recess, the width of the opening being between 20% and 70% the largest width of the recess.
Dependencies are inferred from the claim text.