Patent
US 9,150,416METHOD OF FORMING HIGH-QUALITY HEXAGONAL BORON NITRIDE NANOSHEET USING MULTI COMPONENT EUTECTIC POINT SYSTEM
Seok-Woo Jeon
US
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Patent
Atlas literature
Patent
US 9,150,416Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of manufacturing a hexagonal boron nitride nanosheet, comprising: (a) obtaining an alkali metal ion or a lkali alkaline earth metal ion from a salt mixture including at least two kinds of alkali metal salt or a lkal alkaline earth metal salt, wherein the salt mixture is melted at a tem p erature of 245 ° C or less; (b) preparing a hexagonal boron nitride interlayer compound by inserting the alkali metal ion or a lkal alkaline earth metal ion into layers of hexagonal boron nitride; and (c) obtaining a hexagonal boron nitride nanosheet by removing the alkali metal ion or a+kal alkaline earth metal ion from the hexagonal boron nitride interlayer com pound.
The method according to claim 1, wherein the operations (a) and (b) includes: (i) preparing a hexagonal boron nitride-salt mixture by mixing the salt mixture and hexagonal boron nitride; (ii) melting the salt mixture by heating the hexagonal boron nitride-salt mixture at a eutectic point of the salt mixture or more; and (iii) preparing a hexagonal boron nitride interlayer compound by inserting an alkali metal ion or alkal alkaline earth metal ion generated by melting the salt mixture between layers of hexagonal boron nitride to increase a gap between the layers of hexagonal boron nitride and separate the layers of hexagonal boron nitride.
The method according to claim 1, wherein the alkali metal salt or alkali- alkaline earth metal salt is metal halide. Page 2 of 7 U.S. Serial No.: 13/976,339 PATENT DOCKET: PA 1 290-0
The method according to claim 1, wherein the eutectic mole fraction.
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
KI, KOH, and hexagonal boron nitride powders are placed into an airtight container and heated. After reaction, the powders are dispersed in ethanol. Raman spectroscopy, TEM imaging, and AFM measurements are performed on the resulting hexagonal boron nitride nanosheet.
Materials described outside the worked examples.
alkali metal salt
alkali/alkaline earth metal salt
Measurements and analyses referenced in the patent, with their drawing references.
Table 1
SVG
through a phase diagram of at least two salts, and eutectic points of some salts are shown in Tables 1 and 2 Table 1 shows eutectic points of a two component system, and Table
p. 3
Table 2
Salt 1 Salt 2 Salt 2 Eutectic Reference poin t
SVG 13976339.
p. 4
Patent
Atlas literature
Patent
US 9,150,416Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of manufacturing a hexagonal boron nitride nanosheet, comprising: (a) obtaining an alkali metal ion or a lkali alkaline earth metal ion from a salt mixture including at least two kinds of alkali metal salt or a lkal alkaline earth metal salt, wherein the salt mixture is melted at a tem p erature of 245 ° C or less; (b) preparing a hexagonal boron nitride interlayer compound by inserting the alkali metal ion or a lkal alkaline earth metal ion into layers of hexagonal boron nitride; and (c) obtaining a hexagonal boron nitride nanosheet by removing the alkali metal ion or a+kal alkaline earth metal ion from the hexagonal boron nitride interlayer com pound.
The method according to claim 1, wherein the operations (a) and (b) includes: (i) preparing a hexagonal boron nitride-salt mixture by mixing the salt mixture and hexagonal boron nitride; (ii) melting the salt mixture by heating the hexagonal boron nitride-salt mixture at a eutectic point of the salt mixture or more; and (iii) preparing a hexagonal boron nitride interlayer compound by inserting an alkali metal ion or alkal alkaline earth metal ion generated by melting the salt mixture between layers of hexagonal boron nitride to increase a gap between the layers of hexagonal boron nitride and separate the layers of hexagonal boron nitride.
The method according to claim 1, wherein the alkali metal salt or alkali- alkaline earth metal salt is metal halide. Page 2 of 7 U.S. Serial No.: 13/976,339 PATENT DOCKET: PA 1 290-0
The method according to claim 1, wherein the eutectic mole fraction.
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
KI, KOH, and hexagonal boron nitride powders are placed into an airtight container and heated. After reaction, the powders are dispersed in ethanol. Raman spectroscopy, TEM imaging, and AFM measurements are performed on the resulting hexagonal boron nitride nanosheet.
Materials described outside the worked examples.
alkali metal salt
alkali/alkaline earth metal salt
Measurements and analyses referenced in the patent, with their drawing references.
Table 1
SVG
through a phase diagram of at least two salts, and eutectic points of some salts are shown in Tables 1 and 2 Table 1 shows eutectic points of a two component system, and Table
p. 3
Table 2
Salt 1 Salt 2 Salt 2 Eutectic Reference poin t
SVG 13976339.
p. 4
Patent
Atlas literature
Patent
US 9,150,416Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of manufacturing a hexagonal boron nitride nanosheet, comprising: (a) obtaining an alkali metal ion or a lkali alkaline earth metal ion from a salt mixture including at least two kinds of alkali metal salt or a lkal alkaline earth metal salt, wherein the salt mixture is melted at a tem p erature of 245 ° C or less; (b) preparing a hexagonal boron nitride interlayer compound by inserting the alkali metal ion or a lkal alkaline earth metal ion into layers of hexagonal boron nitride; and (c) obtaining a hexagonal boron nitride nanosheet by removing the alkali metal ion or a+kal alkaline earth metal ion from the hexagonal boron nitride interlayer com pound.
The method according to claim 1, wherein the operations (a) and (b) includes: (i) preparing a hexagonal boron nitride-salt mixture by mixing the salt mixture and hexagonal boron nitride; (ii) melting the salt mixture by heating the hexagonal boron nitride-salt mixture at a eutectic point of the salt mixture or more; and (iii) preparing a hexagonal boron nitride interlayer compound by inserting an alkali metal ion or alkal alkaline earth metal ion generated by melting the salt mixture between layers of hexagonal boron nitride to increase a gap between the layers of hexagonal boron nitride and separate the layers of hexagonal boron nitride.
The method according to claim 1, wherein the alkali metal salt or alkali- alkaline earth metal salt is metal halide. Page 2 of 7 U.S. Serial No.: 13/976,339 PATENT DOCKET: PA 1 290-0
The method according to claim 1, wherein the eutectic mole fraction.
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
KI, KOH, and hexagonal boron nitride powders are placed into an airtight container and heated. After reaction, the powders are dispersed in ethanol. Raman spectroscopy, TEM imaging, and AFM measurements are performed on the resulting hexagonal boron nitride nanosheet.
Materials described outside the worked examples.
alkali metal salt
alkali/alkaline earth metal salt
Measurements and analyses referenced in the patent, with their drawing references.
Table 1
SVG
through a phase diagram of at least two salts, and eutectic points of some salts are shown in Tables 1 and 2 Table 1 shows eutectic points of a two component system, and Table
p. 3
Table 2
Salt 1 Salt 2 Salt 2 Eutectic Reference poin t
SVG 13976339.
p. 4
Patent
Atlas literature
Patent
US 9,150,416Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of manufacturing a hexagonal boron nitride nanosheet, comprising: (a) obtaining an alkali metal ion or a lkali alkaline earth metal ion from a salt mixture including at least two kinds of alkali metal salt or a lkal alkaline earth metal salt, wherein the salt mixture is melted at a tem p erature of 245 ° C or less; (b) preparing a hexagonal boron nitride interlayer compound by inserting the alkali metal ion or a lkal alkaline earth metal ion into layers of hexagonal boron nitride; and (c) obtaining a hexagonal boron nitride nanosheet by removing the alkali metal ion or a+kal alkaline earth metal ion from the hexagonal boron nitride interlayer com pound.
The method according to claim 1, wherein the operations (a) and (b) includes: (i) preparing a hexagonal boron nitride-salt mixture by mixing the salt mixture and hexagonal boron nitride; (ii) melting the salt mixture by heating the hexagonal boron nitride-salt mixture at a eutectic point of the salt mixture or more; and (iii) preparing a hexagonal boron nitride interlayer compound by inserting an alkali metal ion or alkal alkaline earth metal ion generated by melting the salt mixture between layers of hexagonal boron nitride to increase a gap between the layers of hexagonal boron nitride and separate the layers of hexagonal boron nitride.
The method according to claim 1, wherein the alkali metal salt or alkali- alkaline earth metal salt is metal halide. Page 2 of 7 U.S. Serial No.: 13/976,339 PATENT DOCKET: PA 1 290-0
The method according to claim 1, wherein the eutectic mole fraction.
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
KI, KOH, and hexagonal boron nitride powders are placed into an airtight container and heated. After reaction, the powders are dispersed in ethanol. Raman spectroscopy, TEM imaging, and AFM measurements are performed on the resulting hexagonal boron nitride nanosheet.
Materials described outside the worked examples.
alkali metal salt
alkali/alkaline earth metal salt
Measurements and analyses referenced in the patent, with their drawing references.
Table 1
SVG
through a phase diagram of at least two salts, and eutectic points of some salts are shown in Tables 1 and 2 Table 1 shows eutectic points of a two component system, and Table
p. 3
Table 2
Salt 1 Salt 2 Salt 2 Eutectic Reference poin t
SVG 13976339.
p. 4
metal halide
metal halide
metal halide
metal halide