How to prepare poured concrete wall for adhesion
If the wall is unpolished it already offers enough grip for any other concrete based adhesive.
Just make sure its dust free..dampen the concrete wall with a sponge.. let the water drip and sink into the wall and then use a normal adhesive recommended to be used stone veneer direct to the concrete

If it is polished concrete then you will need to grind slits into the concrete so that the concrete can adhere, also taking care to get the concrete into the prepared slits.

You do not need to use any other chemicals that i know off. done it plenty of times when applying plaster direct on concrete or slitted polished wall.. sticks forever.

Just make sure not use adhesive that dries super fast.. just a normal drying adhesive. Drying to fast can cause it the "glue" to shrink and pull away from the wall before it bonds properly.. that is why the wall should also be wet before application