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US 11,605,806 B2Granted
Sacrificial substrates for silicon-carbon composite materials
AssigneeEnevate Corporation
InventorsIan Russell Browne, Rahul R. Kamath, Monika Chhorng, Benjamin Yong Park
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Abstract
Methods of forming a composite material film can include providing a layer comprising a carbon precursor and silicon particles on a sacrificial substrate. The methods can also include pyrolysing the carbon precursor to convert the precursor into one or more types of carbon phases to form the composite material film, whereby the sacrificial substrate has a char yield of about 10% or less.
Claims20
A method comprising:
- forming a multilayer film comprising a substrate layer and a mixture layer, wherein the mixture layer comprises a carbon precursor and silicon particles;
- sectioning the multilayer film into multilayer film pieces;
- stacking a plurality of the multilayer film pieces to form a stack of multilayer film pieces;
- and
- pyrolysing the stack of multilayer film pieces;
- wherein pyrolysing converts the mixture layer of each multilayer film piece in the stack to a composite material film piece;
- and
- wherein the substrate layer of each multilayer film piece in the stack has a char yield of about 10% or less after pyrolysing.
5 more elements
A method comprising:
- forming a first film comprising a first substrate layer and a first mixture layer, wherein the first mixture layer comprises a first carbon precursor and first silicon particles;
- positioning the first film and a sacrificial layer between a first holder and a second holder with the first substrate layer positioned between the first mixture layer and the first holder and the sacrificial layer positioned between the first mixture layer and the second holder;
- and
- pyrolysing the first film and the sacrificial layer;
- wherein pyrolysing converts the first mixture layer of the first film to a first composite material film;
- and
- wherein the first substrate layer of the first film and the sacrificial layer each have a char yield of about 10% or less after pyrolysing.
4 more elements
Dependencies are inferred from the claim text.