Question about Corsair MM700 RGB Extended

This mouse pad does not support induction charging. It only has 2 USB ports on the top right edge, where you can connect and charge your mouse via USB cable.

As thisrobi already wrote, this mousepad does not have induction charging, so it is unsuitable.
It should also be noted that Logitech mice only support Logitech's proprietary "PowerPlay", so you must use a Logitech mousepad if you want to use inductive charging with your mouse.
There are other mice that support the open Qi standard, but Logitech is not one of them.
In addition, as far as I know, there are no XXL mousepads with induction. For the simple reason that there would be a lot of loss with such a pad and it would not be very healthy for the keyboard and other devices on the mat to be constantly in the induction magnetic field (depending on the material, they could even get hot).