Can we use "id est" in lieu of "i.e." in academic writing?

Question

In an academic, format context, can we write "id est" instead of its abbreviated form (i.e.)? Compare: "a walking boot which is synthetic, 'id est' not leather" with: "a walking boot which is synthetic, 'i.e.' not leather"

Answer 1

The term i.e. is a shortening of the Latin expression id est, which translates to “that is.” It is used to introduce a rephrasing or elaboration on something that has already been stated.

I have never seen it written out.