Apple patents specific chemical mix for larger lithium-ion batteries
Apple has secured a patent for a specific blend of chemical additives designed for the liquid inside lithium-ion batteries. The filing details exact percentages of compounds like lithium difluoro(oxalato)borate and fluoroethylene carbonate mixed with standard battery fluids.
In the filing’s own words
This disclosure relates generally to battery cells, and more particularly, electrolyte additives for use in lithium ion battery cells.
What exactly they claim (claim 1)
1. A battery cell comprising: a cathode comprising a cathode active material disposed on a cathode current collector; an anode comprising an anode active material disposed on an anode current collector, the anode oriented towards the cathode such that the anode active material faces the cathode active material; a separator disposed between the cathode active material and the anode active material; and an electrolyte fluid comprising 0.6-0.8 wt % lithium difluoro(oxalato)borate (LiDFOB), 3.0-4.0 wt % butane sultone (BS), 0.2 wt % prop-1-ene-1,3-sultone (PES) 0.4-0.6 wt % methylene methanedisulfonate (MMDS), 0.1-0.3 wt % tris(trimethylsilyl)borate (TMSB), 3.5-4.5 wt % fluoroethylene carbonate (FEC), 1.5-2.5 wt % succinonitrile (SN), and 2.5-3.5 wt % 1,3,6-hexanetricarbonitrile (HTCN), LiPF 6, ethylene carbonate (EC), propylene carbonate (PC), propyl propionate (PP), and ethyl propionate (EP).
Facts
- Company
- Apple (Apple Inc.)
- Official title
- Synergistic additives for high volume lithium ion batteries
- Patent number
- US12770920B2
- Application number
- 17950419
- Filed
- Sep 22, 2022
- Granted
- Oct 20, 2026
- Inventors
- 6
- Claims
- 3
Classified under
H01M 10/0567 Electricity & electronicsH01M 4/0404 Electricity & electronicsH01M 10/0525 Electricity & electronicsH01M 10/0568 Electricity & electronicsH01M 10/0569 Electricity & electronicsH01M 50/46 Electricity & electronicsMore from Apple in Batteries & energy
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.