Abstract:
The disclosed embodiments relate to the design and manufacture of a battery cell. The battery cell contains a set of layers, including a cathode with an active coating, an anode with an active coating, and a composite separator containing an adhesion polymer layer that does not reflow after a thermal treatment of the battery cell is performed to laminate the layers together. The battery cell also includes a pouch enclosing the layers, wherein the pouch is flexible.
Abstract:
An electrolyte for a rechargeable lithium-ion battery includes a solvent consisting of 10.0 wt. % to 35.0 wt. % carbonate-based solvent and 50.0 wt. % to 80.0 wt. % propionate-based solvent, 1.1M to 1.3M lithium salt, 0.1 wt. % to 12.0 wt. % of a phosphazene-based flame retardant, 1,3,6-hexanetricarbonitrile and succinonitrile together in a range of 0.1 wt. % to 5.0 wt. %, and 1.7 wt. % to 15.0 wt. % additives.
Abstract:
An outer cover of a pouch-style battery includes a nanoceramic coating. Constructing an outer cover including a nanoceramic coating may include forming a malleable layer, applying a sealing layer to an inside surface of the malleable layer, and applying the nanoceramic layer to an outside surface of the malleable layer. Fabricating an outer cover including a nanoceramic coating may further include applying a protective film to an outside surface of the outer cover, which may be removed shortly before or after installation of a battery cell for which the outer cover is manufactured. Fabricating an outer cover including a nanoceramic coating may also include applying one or more adhesive layers, for example an adhesive layer between the malleable layer and the sealing layer. An outer cover including a nanoceramic coating may be sealed around a battery-active-material assembly to form a pouch-style battery cell.
Abstract:
An electrolyte for a rechargeable lithium-ion battery includes a solvent consisting of 10.0 wt. % to 35.0 wt. % carbonate-based solvent and 50.0 wt. % to 80.0 wt. % propionate-based solvent, 1.1M to 1.3M lithium salt, 0.1 wt. % to 12.0 wt. % of a phosphazene-based flame retardant, 1,3,6-hexanetricarbonitrile and succinonitrile together in a range of 0.1 wt. % to 5.0 wt. %, and 1.7 wt. % to 15.0 wt. % additives.
Abstract:
An outer cover of a pouch-style battery includes a nanoceramic coating. Constructing an outer cover including a nanoceramic coating may include forming a malleable layer, applying a sealing layer to an inside surface of the malleable layer, and applying the nanoceramic layer to an outside surface of the malleable layer. Fabricating an outer cover including a nanoceramic coating may further include applying a protective film to an outside surface of the outer cover, which may be removed shortly before or after installation of a battery cell for which the outer cover is manufactured. Fabricating an outer cover including a nanoceramic coating may also include applying one or more adhesive layers, for example an adhesive layer between the malleable layer and the sealing layer. An outer cover including a nanoceramic coating may be sealed around a battery-active-material assembly to form a pouch-style battery cell.
Abstract:
Batteries according to embodiments of the present technology may include an enclosure. The batteries may include an electrode stack including a separator positioned between an anode and a cathode. The electrode stack may be characterized by a first side from which a plurality of electrode tabs extend, a second side opposite the first, a third side, and a fourth side opposite the third. The batteries may also include a wrapping seated on a first surface of the electrode stack and extending beyond an edge of each of the second, the third, and the fourth sides of the electrode stack a distance equal to or greater than a thickness of the electrode stack. The wrapping may be adhered to a second surface of the electrode stack opposite the first surface of the electrode stack on each of the second side, the third side, and the fourth side of the electrode stack.
Abstract:
Electrolytes for lithium-containing battery cells are described. The electrolytes may include a solvent that includes at least one non-carbonate-containing ester compound. The electrolytes may further include one or more lithium salts, where the lithium salts have a concentration of greater than or about 2 mols/liter in the electrolyte. The electrolytes may still further include a diluent that includes an aromatic fluorocarbon.
Abstract:
A battery component is described that has at least one ceramic layer that includes ceramic particles and a binder. The ceramic particles may include α-alumina or γ-alumina. The ceramic layer may be characterized by a porosity of greater than or about 40 vol %. In additional embodiments, the one or more ceramic layers may have a weight ratio of ceramic particles to binder is greater than or about 90:10. The battery component may be a battery separator that is characterized by a MacMullin number of less than or about 40 and a thermal shrinkage of less than or about 1 vol. % after 1 hour at 140° C.