Yes, you can. While using USB-C to transmit audio/video, you can also deliver up to 60~90W of power to your laptop. However, keep in mind several different hardware configurations of USB-C exist and some do not support all forms of data and power delivery. Check with your laptop manufacturer to make sure your USB-C port offers DisplayPort Alt Mode compatibility and power delivery support.
Supported model: BL2485TC, BL2785TC, GW2485TC, GW2785TC, EW2780U, EW2880U, EW3280U, EW3880R, PD2705Q, PD3420Q, PD2705U, PD3205U, SW270C, SW271C, SW321C