I ran across this TI document about different cap materials and thought it was pretty informative. The part about biasing an electro cap was something I never considered but seems pretty obvious after reading it.
https://www.ti.com/lit/an/slyt796/slyt796.pdf?ts=1624321436922&ref_url=https%253A%252F%252Fwww.google.com%252F (https://www.ti.com/lit/an/slyt796/slyt796.pdf?ts=1624321436922&ref_url=https%253A%252F%252Fwww.google.com%252F)
Very handy document!