The second set of the exchange and HER measurements was done using commercial nickel foam (NF) and electrodeposited Ni on Ti mesh (Special Metals, India) (Ni-dep). Before HER and Ni/Rh displacement experiments, NF (5×5 mm was exposed to the electrolyte) was cleaned in HCl, acetone, and deionized water. Exchange with Rh was done in the same way as for the Ni-poly disk.