Poly-vinylidene difluoride anode binder in a lithium ion capacitor
AssigneeCorning Incorporated
InventorsKishor Purushottam Gadkaree, Rahul Suryakant Kadam
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Abstract
A lithium ion capacitor, including: an anode including: a conductive support; a first mixture coated on the conductive support including: an interclating carbon; a conductive carbon black; and a PVDF binder in amounts as defined herein, and where the PVDF binder has a weight average molecular weight of from 300,000 to 400,000; and a second mixture coated on the first mixture, the second mixture comprising micron-sized lithium metal particles having an encapsulating shell comprised of LiPF6, mineral oil, and a thermoplastic binder. Also disclosed is a method of making and using the lithium ion capacitor.
Claims3
A lithium ion capacitor, comprising:
- an anode comprising:
- a conductive support;
- a first mixture coated on the conductive support comprising:
- an interclating carbon in from 85 to 95 wt %;
- a conductive carbon black in from 1 to 8 wt %;
- and
- a PVDF binder in from 3 to 10 wt %, where the wt % is based on the total weight of the first mixture, and where the PVDF binder has a weight average molecular weight of from 300,000 to 400,000;
- and
- a second mixture coated on the first mixture, the second mixture comprising micron-sized lithium metal particles having an encapsulating shell comprised of LiPF6, mineral oil, and a thermoplastic binder.
Dependencies are inferred from the claim text.