Battery Capacity Loss: Batteries don't like heat, which is the reason why fast charging cells are quicker to lose their capacity over time. And with 100W charging speed, we'll see a 20% bigger loss in battery capacity compared to 30W PD fast charging.
Technical Implementation: Weibing didn't get into the details about the implementation of 100W Super Charge Turbo, but said it requires an ultra-high voltage charging solution.
Performance: The company wants to make 100W Super Charge Turbo sustainable and not just implement it with the resources currently available.
Safety: Xiaomi needs to work on multiple protection methods for different components, including motherboard, battery and charger to make its charging tech safer to use.
Multiple charging scenarios: While 100W Super Charge Turbo is a wired charging tech, Xiaomi is also considering wireless charging scenarios as well as charger compatibility.

Source: Youtube