Back to results
US 12,744,220 B2Granted
Porous composite, anode and lithium battery each including same, and method for preparing same
AssigneeSamsung SDI Co., Ltd.
InventorsSangkook Mah, Inhyuk Son, Sungnim Jo
Life of this patent
Estimating the term…
Abstract
Provided are a porous composite, an anode and a lithium battery each including the same, and a method of preparing the porous composite. The porous composite includes nanopores and graphene, wherein the nanopores are arranged in a graphene matrix including the graphene, and a size of the nanopores is about 50 nm or less.
Claims19
A porous composite comprising:
- nanopores;
- and
- graphene,
- wherein the nanopores are arranged in a graphene matrix comprising the graphene, and
- a size of the nanopores is about 50 nanometers (nm) or less,
- wherein the graphene has at least one structure selected from a hemispherical structure or a spherical structure, a spiral structure in which hemispherical structures or spherical structures are connected to each other, and a cluster structure in which hemispherical structures or spherical structures are aggregated with each other, and
- the nanopores are distributed in the hemispherical structure or the spherical structure.
4 more elements
A method of preparing a porous composite, the method comprising:
- preparing a composite precursor comprising at least one selected from silica or a first metal oxide and SiOx (where 0<x<2) or a second metal oxide by supplying and heat-treating a reaction gas formed in the form of a carbon source gas to the silica or the first metal oxide;
- and
- preparing a porous composite by removing at least one selected from the silica or the first metal oxide and SiOx (where 0<x<2) or a second metal oxide from the composite precursor,
- wherein the carbon source gas comprises a compound represented by Formula 1, or a mixed gas comprising a compound represented by Formula 1 and at least one selected from a compound represented by Formula 2 and an oxygen-containing gas represented by Formula 3,
- CnH(2n+2−a)[OH]a Formula 1
- wherein, in Formula 1, n is 1 to 20, a is 1;
- CnH2n Formula 2
- wherein, in Formula 2, n is 2 to 6;
- CxHyOz Formula 3
- wherein, in Formula 3, x is an integer of 0 or 1 to 20, y is an integer of 0 or 1 to 20, and z is an integer of 1 or 2,
- wherein the porous composite comprises nanopores and graphene having at least one structure selected from a hemispherical structure or a spherical structure, a spiral structure in which hemispherical structures or spherical structures are connected to each other, and a cluster structure in which hemispherical structures or spherical structures are aggregated with each other, and
- the nanopores are distributed in the hemispherical structure or the spherical structure.
9 more elements
Dependencies are inferred from the claim text.