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Graphene-coated energy-saving metal lead preparation method

A technology of graphene coating and metal wires, which is applied in the direction of metal/alloy conductors, cable/conductor manufacturing, conductors, etc., to improve the conductivity, reduce the weight of wires, and improve the service life.

Inactive Publication Date: 2016-07-06
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing studies on the preparation of graphene by chemical vapor deposition mainly focus on removing the carrier after obtaining graphene material on the metal surface to obtain pure graphene material, while the research on using graphene grown in situ outside the metal wire directly as an energy-saving wire has not yet been carried out. See the report

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A nickel wire with a diameter of 1 mm is used as the metal conductive inner core, and it is placed in a chemical vapor deposition reactor, with acetylene as the carbon source, and the chemical vapor phase of graphene is carried out under the protection of argon and hydrogen at 601 degrees Celsius Deposition, a graphene material with a thickness of 1 mm was deposited on the surface of the wire; 10 such wires were arranged to form a multi-core cable for conductive testing. After graphene coating, the resistivity of the cable was higher than that of the original nickel wire. 20% reduction of cables, 20 times higher current-carrying capacity per unit cross-sectional area;

Embodiment 2

[0017] A nickel wire with a diameter of 0.3 mm is used as the metal conductive inner core, and it is placed in a chemical vapor deposition reactor, with propylene as the carbon source, and the chemical vapor phase of graphene is carried out under the protection of argon and hydrogen at 750 degrees Celsius Deposition, a graphene material with a thickness of 100 microns is deposited on the surface of the wire. The monofilament of the graphene-coated nickel conductive inner core was used as a conductive wire for the conductive test. After the graphene coating, the resistivity of the cable decreased by 13% compared with the original nickel cable, and the current-carrying capacity per unit cross-sectional area increased by 7% times;

Embodiment 3

[0019] A nickel wire with a diameter of 0.1 mm is used as the metal conductive inner core, and it is placed in a chemical vapor deposition reactor, with methane as the carbon source, and under the protection of argon and hydrogen, the chemical vapor phase of graphene is carried out at 1200 degrees Celsius Deposition, a graphene material with a thickness of 1 micron is deposited on the surface of the wire. The graphene-coated nickel conductive inner core monofilament was used as a conductive wire for a conductive test. After the graphene coating, the resistivity of the cable decreased by 7% compared with the original nickel cable, and the current carrying capacity per unit cross-sectional area increased by 3. times.

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Abstract

The invention discloses a graphene-coated energy-saving metal lead preparation method, belonging to the technical field of reducing power transmission metal lead resistance. The method comprises: preparing a graphene material coating layer on the peripheral surface of a metal lead in a chemical vapor deposition (CVD) method; and placing a bare metal lead in a reactor, adding a carbon source, and performing graphene CVD in the growth temperature between 601 DEG C and 1200 DEG C under the protection of argon and hydrogen to obtain a graphene layer. The conductivity ratio of a metal lead of the invention is one order of magnitudes higher than a traditional metal core; besides, a largest current carrying capacity allowed by a graphene material of a same cross section is 3-6 orders of magnitudes higher than a traditional metal lead. The graphene-coated energy-saving metal lead can effectively improve a conductive capability and greatly reduce transmission loss, aim at substantially enhancing lead performance on the aspects of conductive performance, mechanical performance and durability, and solve the problems that a current transmission line mainly depends on metal, and is high in line loss, and poor in mechanical property.

Description

technical field [0001] The invention belongs to the technical field of reducing the resistance of power transmission metal wires, in particular to a preparation method of graphene-coated energy-saving metal wires. Background technique [0002] Energy-saving power grid is one of the important directions for the future development of transmission network, which is of great significance to energy conservation, emission reduction and improvement of energy utilization efficiency. Judging from the current transmission loss of the power grid, the loss of long-distance transmission mainly depends on the resistance of the wire. If the resistance of the transmission line can be greatly reduced through technological means, it is expected to significantly reduce the transmission loss. At present, all kinds of high-conductivity wires developed by the industry are mainly made of metal alloy materials. Through metal compounding, materials with relatively balanced strength and conductivity ...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B9/00H01B1/04H01B1/02H01B7/28H01B7/29H01B7/18
Inventor 黄佳琦张强唐城
Owner TSINGHUA UNIV
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