Mechanism of electrodeposition nickelcobalt alloy and electrocatalytic properties of hydrogen evolution of nickelcobalt obtained in a sulfate bath with or without rare earth compounds were studied.The experimental...Mechanism of electrodeposition nickelcobalt alloy and electrocatalytic properties of hydrogen evolution of nickelcobalt obtained in a sulfate bath with or without rare earth compounds were studied.The experimental results showed that the process of nickelcobalt alloy belonged to"anomalous codeposition".By measuring the cathodic polarization curves,the surface structure and the components of nickelcobalt alloy,when a small amount of rare earth compounds was added to the bath,the cathodic polarization of electrodepositing process was decreased,the alloy coatings gained from the bath containing Ce(SO4)2 became higher in the electrocatalytic properties of hydrogen evolution in 7mol·L-1 KOH and roaser in grain size and less in cobalt content.展开更多
文摘Mechanism of electrodeposition nickelcobalt alloy and electrocatalytic properties of hydrogen evolution of nickelcobalt obtained in a sulfate bath with or without rare earth compounds were studied.The experimental results showed that the process of nickelcobalt alloy belonged to"anomalous codeposition".By measuring the cathodic polarization curves,the surface structure and the components of nickelcobalt alloy,when a small amount of rare earth compounds was added to the bath,the cathodic polarization of electrodepositing process was decreased,the alloy coatings gained from the bath containing Ce(SO4)2 became higher in the electrocatalytic properties of hydrogen evolution in 7mol·L-1 KOH and roaser in grain size and less in cobalt content.
