This talk deals with AdS black holes arising as solutions of four dimensional supergravity theories, admitting an embedding in M-theory.
I will first introduce the framework of abelian FI gauged N=2 supergravity and I will give a brief overview of the various black hole solutions found so far. Subsequently I will discuss the thermodynamics of the static thermal solutions. I will show that for a sufficiently small charge a phase transition arises between small, hairy black holes and large, less-hairy ones. A similar phase transition takes place for a newly found class of rotating AdS black holes with scalar field. I will then comment on the interpretation of this phase transition in the dual field theory by means of the AdS/CFT correspondence.
Time permitting, I will finally elaborate upon some ongoing work concerning the study of bound states of AdS black holes.