Thermal management system containing a graphene oxide-coated graphitic foil laminate for electronic device application
First Claim
1. A heat dissipation system, comprising:
- (a) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the electronic device;
(b) a heat-conducting layer comprising two major surfaces, wherein one of said major surfaces is in operative contact with the heat source such that the heat-conducting layer is interposed between the heat source and the second component or the external surface of the electronic device;
wherein the heat-conducting layer comprises at least one graphene oxide-coated graphitic foil laminate which thermally shields the second component or the external surface of the electronic device from heat generated by the heat source, and wherein the laminate is composed of a graphitic substrate or core layer having two opposed primary surfaces and at least a graphene oxide coating layer deposited on at least one of said two primary surfaces, wherein said graphitic substrate or core layer has a thickness greater than 1 nm, and said graphene oxide coating layer has a thickness greater than 1 nm and an oxygen content of 0.01%-40% by weight based on the total graphene oxide coating weight.
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Abstract
A heat dissipation system, comprising: (a) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the device; (b) a heat-conducting layer being positioned such that one of its major surfaces is in operative contact with the heat source such that it is interposed between the heat source and the second component or the external surface. The heat-conducting layer comprises at least one graphene oxide-coated graphitic foil laminate which thermally shields the second component or the external surface from heat generated by the heat source, and wherein the laminate is composed of a graphitic substrate/core layer with at least one primary surface coated with a graphene oxide coating layer. This graphene oxide-coated laminate exhibits a combination of exceptional thermal conductivity, electrical conductivity, mechanical strength, surface hardness, and scratch resistance, making this the most effective heat dissipation system.
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Citations
43 Claims
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1. A heat dissipation system, comprising:
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(a) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the electronic device; (b) a heat-conducting layer comprising two major surfaces, wherein one of said major surfaces is in operative contact with the heat source such that the heat-conducting layer is interposed between the heat source and the second component or the external surface of the electronic device; wherein the heat-conducting layer comprises at least one graphene oxide-coated graphitic foil laminate which thermally shields the second component or the external surface of the electronic device from heat generated by the heat source, and wherein the laminate is composed of a graphitic substrate or core layer having two opposed primary surfaces and at least a graphene oxide coating layer deposited on at least one of said two primary surfaces, wherein said graphitic substrate or core layer has a thickness greater than 1 nm, and said graphene oxide coating layer has a thickness greater than 1 nm and an oxygen content of 0.01%-40% by weight based on the total graphene oxide coating weight. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A heat dissipation system, comprising:
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(A) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the electronic device; (B) a heat-conducting layer comprising two major surfaces, the heat-conducting layer being positioned such that one of its major surfaces is in operative contact with the heat source such that it is interposed between the heat source and the second component or the external surface of the electronic device; wherein the heat-conducting layer comprises at least one graphene oxide-coated graphitic foil laminate which thermally shields the second component or the external surface of the electronic device from heat generated by the heat source, and wherein the laminate is composed of a graphitic substrate or core layer having two opposed primary surfaces and at least a graphene oxide coating layer deposited on at least one of said two primary surfaces, wherein said graphene oxide coating layer contains a unitary graphene layer or graphene single crystal obtained from a heat treatment of a graphene oxide gel and has an oxygen content of less than 5% by weight based on the total graphene oxide weight.
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Specification