Materials with extremely durable intercalation of lithium and manufacturing methods thereof
AssigneeGroup14 Technologies, Inc.
InventorsAvery J. Sakshaug, Henry R. Costantino, Aaron M. Feaver, Leah A. Thompkins, Katharine Geramita, Benjamin E. Kron, Sarah Fredrick, Farshid Afkhami, Adam Strong
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Abstract
Composites of silicon and various porous scaffold materials, such as carbon material comprising micro-, meso- and/or macropores, and methods for manufacturing the same are provided. The compositions find utility in various applications, including electrical energy storage electrodes and devices comprising the same.
Claims30
A material comprising a plurality of composite particles, wherein the composite particles comprise:
- (a) a porous carbon framework comprising micropores and mesopores, and having:
- (i) a total pore volume of greater than 0.6 cm3/g;
- (ii) a volume fraction of micropores in the range from 20-50% and a volume fraction of mesopores in the range of 50-80%;
- (iii) a fractional pore volume of pores at or below 10 nm that comprises at least 75% of the total pore volume;
- and
- (iv) a Dv50 ranging from 5 nm to 20 um;
- (b) nano-featured silicon embedded within pores of the porous carbon framework, wherein the weight percent of the nano-featured silicon to the porous carbon framework ranges from 10% to 80%, and
- (c) a surface area below 50 m2/g.
A material comprising a plurality of composite particles, wherein the composite particles comprise:
- (a) a porous carbon framework comprising micropores and mesopores, and having:
- (i) a total pore volume of greater than 0.6 cm3/g;
- (ii) a volume fraction of micropores in the range from 40-60% and a volume fraction of mesopores in the range of 40-60%;
- (iii) a fractional pore volume of pores at or below 10 nm that comprises at least 75% of the total pore volume;
- and
- (iv) a Dv50 ranging from 5 nm to 20 um;
- (b) nano-featured silicon embedded within pores of the porous carbon framework, wherein the weight percent of the nano-featured silicon to the porous carbon framework ranges from 10% to 80%, and
- (c) a surface area below 50 m2/g.
A material comprising a plurality of composite particles, wherein the composite particles comprise:
- (a) a porous carbon framework comprising micropores and mesopores, and having:
- (i) a total pore volume of greater than 0.6 cm3/g;
- (ii) a volume fraction of micropores in the range from 80-95% and a volume fraction of mesopores in the range of 0-10%;
- (iii) a fractional pore volume of pores at or below 10 nm that comprises at least 75% of the total pore volume;
- and
- (iv) a Dv50 ranging from 5 nm to 20 um;
- (b) nano-featured silicon embedded within pores of the porous carbon framework, wherein the weight percent of the nano-featured silicon to the porous carbon framework ranges from 10% to 80%, and
- (c) a surface area below 50 m2/g.
A material comprising a plurality of composite particles, wherein the composite particles comprise:
- (a) a porous carbon framework having:
- (i) a total pore volume of greater than 0.6 cm3/g;
- (ii) a volume fraction of micropores greater than 50%;
- (iii) a fractional pore volume of pores at or below 10 nm that comprises at least 75% of the total pore volume;
- and
- (iv) a Dv50 ranging from 5 nm to 20 um;
- (b) nano-featured silicon embedded within pores of the porous carbon framework, wherein the weight percent of the nano-featured silicon to the porous carbon framework ranges from 10% to 80%, and
- (c) a surface area below 50 m2/g.
Dependencies are inferred from the claim text.