Electrolyte additive and use thereof in secondary lithium batteries
AssigneeAutomat Solutions, Inc.
InventorsXuejun Wang, Xiaoliang Wang, Ipshita Sahoo
Life of this patent
Estimating the term…
Abstract
The present invention discloses three classes of electrolyte additives for use in secondary lithium batteries. The secondary lithium battery may comprise a positive electrode, a negative electrode, an electrolyte, a porous separator between the positive and negative electrode, and an electrolyte additive. The electrolyte additive in the secondary lithium batteries may include non-lithium salts, inorganic fillers, and polymer additives. The use of electrolyte additives and combinations thereof improves the cell performance of secondary lithium batteries.
Claims12
An electrolyte configured for use in a secondary lithium battery, the electrolyte comprising:
- one or more lithium salts including at least lithium hexafluorophosphate or lithium trifluoromethylsulfonylimide;
- a solvent including at least ethylene carbonate or dimethyl carbonate;
- cesium nitrate at about 3 wt % of the electrolyte;
- silica at about 0.5 wt % of the electrolyte;
- and polyethylene oxide at about 1 wt % of the electrolyte.
A secondary lithium battery electrolyte, comprising:
- one or more lithium salts including at least lithium hexafluorophosphate or lithium trifluoromethylsulfonylimide;
- a solvent including at least dimethyl carbonate or ethylene carbonate;
- cesium nitrate at about 3 wt % of the electrolyte;
- fumed silica at about 0.5 wt % of the electrolyte;
- and
- polyethylene oxide at about 1 wt % of the electrolyte.
A secondary lithium battery, comprising:
- a positive electrode;
- a negative electrode;
- a porous separator between the positive electrode and negative electrode;
- and an electrolyte, including:
- one or more lithium salts including at least lithium hexafluorophosphate or lithium trifluoromethylsulfonylimide,
- a solvent including at least ethylene carbonate or dimethyl carbonate,
- cesium nitrate at about 3 wt % of the electrolyte,
- fumed silica at about 0.5 wt % of the electrolyte, and
- polyethylene oxide at about 1 wt % of the electrolyte.
Dependencies are inferred from the claim text.