Codeposition mechanism of phosphorus with nickel on an Ni Ag alloy electrode has been investigated by means of in situ surface enhanced Raman spectroscopy(SERS) and electrochemical method to obtain new information abo...Codeposition mechanism of phosphorus with nickel on an Ni Ag alloy electrode has been investigated by means of in situ surface enhanced Raman spectroscopy(SERS) and electrochemical method to obtain new information about the phosphorus incorporation mechanism during electrodeposition of Ni P alloys.The intermediate,Ni(PH3)n,in the electrodeposition of Ni P alloy was detected with in situ surface Raman spectroscopy for the first time. The experimental results showed that in the solution without NiSO4,hypophosphite was reduced only to Ni phosphine compound,while in the case where NiSO4 coexisted in the solution,the Ni phosphine compound,as an intermediate,was oxidized by Ni2＋to elemental phosphorus in alloys with nickel acting as the catalyst.展开更多
以金属共沉积理论为依据,对Cu2+、Ni2+共沉积进行计算,结果发现,理论计算值与实际工艺参数值之间存在极大差异。表明在化学沉积Ni Cu P合金过程中,由于Ni2+的重要作用———诱导在活性表面上放电及维持表面活性,使得Cu2+、Ni2+的共沉... 以金属共沉积理论为依据,对Cu2+、Ni2+共沉积进行计算,结果发现,理论计算值与实际工艺参数值之间存在极大差异。表明在化学沉积Ni Cu P合金过程中,由于Ni2+的重要作用———诱导在活性表面上放电及维持表面活性,使得Cu2+、Ni2+的共沉积不同于一般阴电极上金属共沉。展开更多
文摘Codeposition mechanism of phosphorus with nickel on an Ni Ag alloy electrode has been investigated by means of in situ surface enhanced Raman spectroscopy(SERS) and electrochemical method to obtain new information about the phosphorus incorporation mechanism during electrodeposition of Ni P alloys.The intermediate,Ni(PH3)n,in the electrodeposition of Ni P alloy was detected with in situ surface Raman spectroscopy for the first time. The experimental results showed that in the solution without NiSO4,hypophosphite was reduced only to Ni phosphine compound,while in the case where NiSO4 coexisted in the solution,the Ni phosphine compound,as an intermediate,was oxidized by Ni2＋to elemental phosphorus in alloys with nickel acting as the catalyst.
