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US 2023/0420742 A1Published application
Electrolyte for lithium-ion batteries with silicon-based anodes
AssigneeApple Inc.
InventorsWoo Cheol Shin, Hyea Kim, OuJung Kwon
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Abstract
An electrochemical cell has an anode comprising a silicon-based active material, a cathode comprising a cathode active material, and an electrolyte. The electrolyte is formulated with a propionate-based solvent, a carbonate-based solvent, trifluoro toluene, a lithium salt with a molar concentration of 2.0 M or greater, and less than or equal to 5.0 wt. % of fluoroethylene carbonate.
Claims19
An electrochemical cell, comprising:
- an anode comprising a silicon-based active material;
- a cathode comprising a cathode active material;
- and
- an electrolyte comprising:
- a propionate-based solvent;
- a carbonate-based solvent;
- trifluoro toluene;
- a lithium salt with a molar concentration of 2.0 M or greater;
- and
- less than or equal to 5.0 wt. % of fluoroethylene carbonate.
7 more elements
An electrochemical cell, comprising:
- an anode comprising a silicon-based active material having a volumetric capacity of ≥500 mAh/cc;
- a cathode comprising a cathode active material;
- and
- an electrolyte, comprising:
- propyl propionate;
- ethylene carbonate;
- trifluoro toluene;
- LiFSI at a molar concentration of 2.0 M or greater;
- and
- less than or equal to 5.0 wt. % fluoroethylene carbonate.
7 more elements
Dependencies are inferred from the claim text.