Lightweight cable and preparation method and application thereof

The invention provides a lightweight cable and a preparation method and application thereof. The lightweight cable sequentially comprises a wire core, an oxygen barrier layer, a shielding layer, a wrapping layer and an outer sheath from inside to outside along the radial direction, each wire core comprises a conductor and an insulating layer wrapping the outer surface of the conductor. The conductor is a graphene aluminum conductor; a filling layer is arranged between the wire core and the oxygen barrier layer; the preparation raw materials of the filling layer comprise a filler and heat-conducting silicon; and a heat dissipation device is arranged on the outer surface of the wrapping layer. The cable provided by the invention has the advantages of light weight, high mechanical property, high conductivity and better heat dissipation performance, and can be used as an automobile cable. 本发明提供一种轻量化电缆及其制备方法和应用。所述轻量化电缆沿径向由内到外依次包括线芯、隔氧层、屏蔽层、绕包层和外护套；所述线芯包括导体和包覆在导体外表面的绝缘层；所述导体为石墨烯铝导体；所述线芯和隔氧层之间设置有填充层；所述填充层的制备原料包括填充物和