Anode electrode with anode active material layer including lithium silicon oxide or silicon oxide and styrene butadiene rubber
AssigneeGM Global Technology Operations LLC
InventorsBradley R. Frieberg, Anita Li, Roland J. Koestner, Xiaosong Huang, Taylor Syring
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Abstract
An anode electrode comprises an anode current collector. An anode active material layer comprises anode active material comprising at least one of lithium silicon oxide, silicon oxide, lithium silicon oxide and graphite, and silicon oxide and graphite. The anode active material layer further comprises a binder comprising a mixture of styrene butadiene rubber (SBR), sodium carboxymethyl cellulose (NaCMC) and sodium polyacrylic acid (NaPAA), wherein SBR comprises greater than 60% wt of the binder.
Claims16
An anode electrode comprising:
- an anode current collector;
- and
- an anode active material layer comprising:
- a conductive filler;
- anode active material comprising a material selected from a group consisting of:
- lithium silicon oxide;
- silicon oxide;
- lithium silicon oxide and graphite;
- and
- silicon oxide and graphite;
- and
- a binder comprising a mixture of styrene butadiene rubber (SBR), sodium carboxymethyl cellulose (NaCMC) and sodium polyacrylic acid (NaPAA), wherein SBR comprises greater than 60% wt of the binder,
- wherein:
- the conductive filler includes first particles having an aspect ratio less than 2 and second particles having an aspect ratio greater than 20,
- the first particles include acetylene black, and
- the second particles include graphene nanoplatelets.
An anode electrode comprising:
- an anode current collector;
- an anode active material layer comprising:
- anode active material comprising a material selected from a group consisting of:
- lithium silicon oxide;
- silicon oxide;
- lithium silicon oxide and graphite;
- and
- silicon oxide and graphite;
- a binder comprising a mixture of styrene butadiene rubber (SBR) and sodium carboxymethyl cellulose (NaCMC), wherein SBR comprises greater than 60% wt of the binder;
- and
- a conductive filler comprising first particles having an aspect ratio less than 2 and second particles having an aspect ratio greater than 20,
- wherein:
- the first particles include 0.1% wt to 3% wt of the anode active material layer,
- the first particles include acetylene black,
- the second particles include 0.05% wt to 2% wt of the anode active material layer, and
- the second particles include graphene nanoplatelets.
Dependencies are inferred from the claim text.