Conductive two-dimensional particle and method for producing the same
A conductive two-dimensional particle of a layered material comprising one layer or one layer and plural layers, wherein the layer includes a layer body represented by: M m X n , and a modifier or terminal T exists on a surface of the layer body, wherein T is at least one selected from the group consisting of a hydroxyl group, a fluorine atom, a chlorine atom, an oxygen atom, or a hydrogen atom; and a monovalent metal ion, wherein the conductive two-dimensional particle does not contain an amine, a total content of chlorine and bromine in the conductive two-dimensional particle is 1,500 ppm by mass or less, and an average value of a major diameter of a two-dimensional surface of the conductive two-dimensional particle is 1.0 μm to 20 μm.
1 . A conductive two-dimensional particle of a layered material comprising one layer or one layer and plural layers, wherein the layer includes a layer body represented by:
M m X n
wherein M is at least one metal of Group 3, 4, 5, 6, or 7,
X is a carbon atom, a nitrogen atom, or a combination thereof,
n is 1 to 4, and
m is more than n and 5 or less, and
a modifier or terminal T existing on a surface of the layer body,
wherein T is at least one selected from the group consisting of a hydroxyl group, a fluorine atom, a chlorine atom, an oxygen atom, or a hydrogen atom;
a monovalent metal ion; and
an organic compound having a Hildebrand dissolution parameter of 19.0 MPa 1/2 to 47.8 MPa 1/2 ,
wherein
the conductive two-dimensional particle does not contain an amine,
a total content of chlorine and bromine in the conductive two-dimensional particle is 1,500 ppm by mass or less, and
an average value of a major diameter of a two-dimensional surface of the conductive two-dimensional particle is 1.0 μm to 20 μm.
2 . The conductive two-dimensional particle according to claim 1 , wherein an average value of a thickness of the conductive two-dimensional particle is 1 nm to 10 nm.
3 . The conductive two-dimensional particle according to claim 2 , wherein the monovalent metal ion is a lithium ion.
4 . The conductive two-dimensional particle according to claim 1 , wherein the monovalent metal ion is a lithium ion.
5 . The conductive two-dimensional particle according to claim 1 , wherein the organic compound is at least one selected from the group consisting of methanol, ethanol, dimethyl sulfoxide, propylene carbonate, N methylformamide, acetone, methyl ethyl ketone, and tetrahydrofuran.
6 . The conductive two-dimensional particle according to claim 1 , wherein the monovalent metal ion is an alkali metal ion.
7 . The conductive two-dimensional particle according to claim 1 , wherein a content of the monovalent metal ion in the conductive two-dimensional particles is 0.001 mass % to 10 mass %.
8 . The conductive two-dimensional particle according to claim 1 , wherein the total content of the chlorine and the bromine in the conductive two-dimensional particle is 900 ppm by mass or less.
9 . A conductive paste comprising the conductive two-dimensional particle according to claim 1 .
10 . A conductive composite material comprising:
the conductive two-dimensional particle according to claim 1 ; and
a resin.