It needs a USB-C to USB-C cable. There are some that go for 100 watts, so I would pay attention to that, I wouldn't take a cheap one. Thunderbolt cables don't really exist directly, because they are technically USB-C cables, but I would recommend this one from Lenovo, it can handle 100 watts:
Lenovo USB C - USB C (0.70 m)
So if the Lenovo X13 Yoga Gen2 has a USB-C or Thunderbolt port, that should work. Thunderbolt also includes image, sound, data and of course charging. But you can also charge with a normal USB-C to USB-C cable, if the notebook can do that (some can only transfer data to the USB-C port, but not power delivery, that's the keyword, if PD and DP work, everything is good, DP then stands for DisplayPort, i.e. image transfer via USB-C).