Granted Patent B2

US 12,671,111 · App. 17/830,964 · Granted Jun 30, 2026

Inventors: Hongli Dai (Los Altos, CA); Libo Hu (Mountain View, CA); Paul M. Bayley (Santa Clara, CA); Zhengcheng Zhang (Naperville, IL); Khalil Amine (Oak Brook, IL); Qian Liu (Darien, IL); Mingfu He (Palos Park, IL)

Assignee: Apple Inc.

H01M10/0567H01M10/0525H01M10/0568H01M10/0569H01M10/0585H01M2300/0042

Abstract

Claims (7)

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 LiPF 6 , 5 to 40 wt % ethylene carbonate (EC), 20 to 70 wt % propyl propionate (PP), 10 to 50 wt % ethyl propionate (EP), 2 to 20 wt % propylene carbonate (PC), 0.6-0.8 wt % lithium difluoro(oxalato)borate (LiDFOB), 1.3-1.6 wt % prop-1-ene-1, 3-sultone (PES), 2.0-3.0 wt % propane sultone (PS), 6.0-8.0 wt % FEC, 1.5-2.5 wt % succinonitrile (SN), 2.5-3.5 wt % HTCN, and 0.4-0.6 wt % methylene methanedisulfonate (MMDS).

2 . The battery cell of claim 1 , wherein the electrolyte fluid comprises 0.7 wt % LiDFOB, 1.5 wt % PES, 2.5 wt % PS, 7.0 wt % FEC, 2.0 wt % SN, 3.0 wt % HTCN, and 0.5 wt % MMDS.

3 . The battery cell of claim 1 , wherein the LiPF 6 has a concentration from 0.8 M to 1.6 M.

Assignments (1)

Continuity (2)

References Cited (67)