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Semi-solid electrodes having high rate capability

Patent ·
OSTI ID:1600310
Embodiments described herein relate generally to electrochemical cells having high rate capability, and more particularly to devices, systems and methods of producing high capacity and high rate capability batteries having relatively thick semi-solid electrodes. In some embodiments, an electrochemical cell includes an anode and a semi-solid cathode. The semi-solid cathode includes a suspension of an active material of about 35% to about 75% by volume of an active material and about 0.5% to about 8% by volume of a conductive material in a non-aqueous liquid electrolyte. An ion-permeable membrane is disposed between the anode and the semi-solid cathode. The semi-solid cathode has a thickness of about 250 μm to about 2,000 μm, and the electrochemical cell has an area specific capacity of at least about 7 mAh/cm2 at a C-rate of C/4. In some embodiments, the semi-solid cathode slurry has a mixing index of at least about 0.9.
Research Organization:
24M Technologies, Inc., Cambridge, MA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AR0000102
Assignee:
24M Technologies, Inc. (Cambridge, MA)
Patent Number(s):
10,483,582
Application Number:
15/792,179
OSTI ID:
1600310
Country of Publication:
United States
Language:
English

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