Brazil has been emphasizing the processing of heavy oils with high corrosivity. This deterioration involved the hydrogen permeation. Electrochemical techniques were used to study the behavior of nickel electrodeposited on a stainless steel during hydrogen charging cycles. The variation of the electrochemical parameters, such as the open-circuit potential indicates the possible presence of hydrogen in the electrodeposited nickel. The XRD analyses show a stable electrode before and after the hydrogen charging cycles. This methodology was efficient for the detection of hydrogen in its early stages of incorporation into the electrode and for the detection of chemical interactions with metallic structures. ARTICLE TH 66Electrochemical detection of hydrogen uptake in electrodeposited nickel/nickel hydroxide system to prevent corrosion process *Corresponding author: claudiamarino@ufpr.br; phone/fax number +55 41 3361-3129UFPR: