| 초록 |
With the growth in electrification, the demand for the functionality and feature of electric vehicles (EVs) is increasing, and accordingly, the required weight of copper (Cu) is increasing. Additionally, Cu usage is increasing as the wiring/functions of autonomous vehicles (AVs) increase. Therefore, energy efficiency due to the high mass density of Cu electrical cables has become a challenging issue to be overcome. With this trend, carbon-metal core-shell wire is an attractive lightweight material. However, previously reported carbon-metal core-shell wire remains a challenge to further improving its properties. Here, we report CNTF-Cu-Gr wires by introducing graphene into Cu electroplated on CNTFs. The electroplated Cu was coated with graphene via chemical vapor deposition, which also provided synergetic effects, enabling better thermal and electrical properties. These CNTF-Cu-Gr wires exhibit excellent overall performance in terms of mechanical, electrical, and thermal properties with lightweight. We expect that these dual core-shell wires will be used in practical applications in the near future. |
