Lithium-ion battery cell and module
AssigneeCPS Technology Holdings LLC
InventorsHizuru Koshina, David R. Boone
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Abstract
An electrochemical cell is provided. The electrochemical cell includes a positive electrode including a first lithium metal-based material, the first lithium metal-based material including one or more transition metal ions, and wherein the positive electrode has an operating voltage of 4.5 volts versus lithium metal potential or greater. The electrochemical cell also includes an electrolyte formed from ingredients comprising a solvent and lithium salt. The solvent includes at least one carbonic ester. The electrochemical cell further includes a negative electrode including a second lithium metal-based material, the second lithium metal-based material including one or more transition metal ions.
Claims20
An electrochemical cell, comprising:
- a positive electrode comprising a first lithium metal-based material, the first lithium metal-based material comprising one or more transition metal ions, wherein the positive electrode has an operating voltage of 4.5 volts versus lithium metal potential or greater;
- an electrolyte formed from ingredients comprising a solvent and lithium salt, wherein the solvent comprises at least one carbonic ester;
- a negative electrode comprising a second lithium metal-based material, the second lithium metal-based material comprising one or more transition metal ions;
- and
- a combination of the positive electrode, the negative electrode and the electrolyte composition having a cell potential maintenance of at least 3.0 V up to substantially 80% depth of charge.
A battery module, comprising:
- a plurality of electrochemical cells, each electrochemical cell comprising:
- a positive electrode comprising a first stabilized lithium metal oxide material or a stabilized lithium metal phosphate material, the first stabilized lithium metal oxide material and the stabilized lithium metal phosphate material each comprising one or more transition metal ions;
- an electrolyte formed from ingredients comprising a solvent and a lithium salt, wherein the solvent comprises at least one carbonic ester, with at least one of the at least one carbonic ester being ethylene carbonate at 1 to 50 wt % of the electrolyte;
- a negative electrode comprising a second stabilized lithium metal oxide material or a stabilized lithium metal sulfide material, the second stabilized lithium metal oxide material and the stabilized lithium metal sulfide material each comprising one or more transition metal ions;
- and
- a combination of the positive electrode, the negative electrode and the electrolyte having a cell potential maintenance of at least 3.0 V up to substantially 80% depth of charge.
Dependencies are inferred from the claim text.