Graphene wire, cable employing the same, and method of manufacturing the same
Provided are a graphene wire, a cable to which the graphene wire is applied, and a method of manufacturing the graphene wire. The graphene wire includes a catalytic metal wire and a graphene layer coated on a surface of the catalytic metal wire, and the catalytic metal wire includes a stranded cable in which at least two core wires are twisted around each other.
1. A cable comprising:
at least one graphene wire;
a tension member arranged around the at least one graphene wire in a lengthwise direction thereof; and
an insulating sheath surrounding circumferences of the at least one graphene wire and the tension member,
wherein the at least one graphene wire comprises:
a stranded cable in which at least two core wires are twisted around each other; and
a graphene coating layer surrounding a circumference of the stranded cable.
2. The cable of claim 1 , wherein the stranded cable further comprises a metal layer disposed on a surface of the at least two twisted core wires.
3. The cable of claim 1 , further comprising an insulating layer surrounding the graphene coating layer.
4. The cable of claim 1 , wherein the tension member comprises at least one of Kevlar aramid yarn, a fiber glass epoxy rod, Fiber Reinforced Polyethylene (FRP), high-strength fiber, a zinc-coated wire, and a steel wire.
5. The cable of claim 1 , wherein the at least one graphene wire is provided as a plurality of graphene wires, and the plurality of the graphene wires are twisted around one another.
6. A method of manufacturing a cable, the method comprising:
forming a catalytic metal wire of a stranded cable type by twisting at least two core wires around each other;
fabricating a graphene wire by synthesizing a graphene layer on a surface of the catalytic metal wire by a chemical vapor deposition method;
arranging a tension member around the graphene wire in a lengthwise direction; and
forming an insulating sheath surrounding the graphene wire and the tension member.
7. The method of claim 6 , wherein the tension member comprises at least one of Kevlar aramid yarn, a fiber glass epoxy rod, Fiber Reinforced Polyethylene (FRP), high-strength fiber, a zinc-coated wire, and a steel wire.
8. The method of claim 6 , wherein the synthesizing of the graphene layer is performed at a temperature higher than a melting point of the tension member.
9. The method of claim 6 , wherein the insulating sheath includes a fluoride resin or a weaved material.
10. The method of claim 6 , wherein at least one of a plasma process, a laser process, and a pre-heating process is performed on the catalytic metal wire, before the synthesizing of the graphene layer.