Cyclic voltammetry and chronoamperometry were used to investigate the electrochemical behavior of Fe(Ⅱ) and Er(Ⅲ) in a LiClO 4 DMSO(dimethylsufoxide) system at Pt and Cu electrodes. Experimental results indicate t...Cyclic voltammetry and chronoamperometry were used to investigate the electrochemical behavior of Fe(Ⅱ) and Er(Ⅲ) in a LiClO 4 DMSO(dimethylsufoxide) system at Pt and Cu electrodes. Experimental results indicate that the reductions of Fe(Ⅱ) to Fe(0) and Er(Ⅲ) to Er(0) were irreversible at Pt and Cu electrodes. The diffusion coefficient and the electron transfer coefficient of Fe(Ⅱ) in a 0 01 mol/L FeCl 2 0 1 mol/L LiClO 4 DMSO system at 303 K were 1 70×10 -10 m 2/s and 0 08 respectively, the diffusion coefficient and the electron transfer coefficient of Er(Ⅲ) in a 0 01 mol/L ErCl 3 0 1mol/L LiClO 4 DMSO system at 303 K were 1 47×10 -10 m 2/s and 0 108 respectively. The homogeneous, strong adhesive Er Fe alloy films containing Er of 31 39%-42 12% in mass fraction with metallic lustre were prepared by potentiostatic electrolysis on a Cu electrode in a ErCl 3 FeCl 2 LiClO 4 DMSO system at -1 75--2 50 V( vs . SCE).展开更多
The relations between conductivity and temperature of YCl3-LiClO4-DMSO system were measured. The cyclic voltammetry, chronoamperometry, chronopotentiometry and X-ray diffraction were used to investigate the electroche...The relations between conductivity and temperature of YCl3-LiClO4-DMSO system were measured. The cyclic voltammetry, chronoamperometry, chronopotentiometry and X-ray diffraction were used to investigate the electrochemical behavior of Y3+ in YCl3-LiClO4-DMSO system on Pt and Cu cathodes. Experimental results indicate that the electroreduction of Y3+ to Y is irreversible in one step. The Y metal was prepared by potentiostatic electrolysis on Cu electrode in YCl3-LiClO4-DMSO system. The deposits composed of Y over 97% (mass fraction) were obtained. The diffusion coefficient and electron transfer coefficient of Y3+ in YCl3-LiClO4-DMSO system at 298 K are 3.22 x 10(-6) cm(2).s(-1) and 0.22, respectively.展开更多
The cyclic voltammetry, current time curve at potential step and potential time curve of galvanostatic method were used to investigate the electrochemical behavior of Er(Ⅲ) in ErCl 3 LiClO 4 DMF(N, N dimethylformamid...The cyclic voltammetry, current time curve at potential step and potential time curve of galvanostatic method were used to investigate the electrochemical behavior of Er(Ⅲ) in ErCl 3 LiClO 4 DMF(N, N dimethylformamide) system on Pt and Cu electrodes. Results indicate that the electroreducation of Er(Ⅲ) to Er(0) is irreversible on Pt and Cu electrodes, the diffusion coefficient and electron transfer coefficient of Er(Ⅲ) in 0.01 mol/L ErCl 3 0.1 mol/L LiClO 4 DMF system at 303 K are 1.96×10 -6 cm 2·s -1 and 0.081 respectively. The Er metal film was prepared by galvanostatic electrolysis on Cu electrode in ErCl 3 LiClO 4 DMF system at 40 A·m -2 (current density). The deposites composed of Er over 95%(mass fraction) were obtained.展开更多
基金Supported by the Thousand- Hundred- Ten Talent Project Foundation of Guangdong Province Education Office(No.0 0 - 0 79- 4 2 10 0 5 ) and State Key L ab of Rare Material Chem istry and Applications
文摘Cyclic voltammetry and chronoamperometry were used to investigate the electrochemical behavior of Fe(Ⅱ) and Er(Ⅲ) in a LiClO 4 DMSO(dimethylsufoxide) system at Pt and Cu electrodes. Experimental results indicate that the reductions of Fe(Ⅱ) to Fe(0) and Er(Ⅲ) to Er(0) were irreversible at Pt and Cu electrodes. The diffusion coefficient and the electron transfer coefficient of Fe(Ⅱ) in a 0 01 mol/L FeCl 2 0 1 mol/L LiClO 4 DMSO system at 303 K were 1 70×10 -10 m 2/s and 0 08 respectively, the diffusion coefficient and the electron transfer coefficient of Er(Ⅲ) in a 0 01 mol/L ErCl 3 0 1mol/L LiClO 4 DMSO system at 303 K were 1 47×10 -10 m 2/s and 0 108 respectively. The homogeneous, strong adhesive Er Fe alloy films containing Er of 31 39%-42 12% in mass fraction with metallic lustre were prepared by potentiostatic electrolysis on a Cu electrode in a ErCl 3 FeCl 2 LiClO 4 DMSO system at -1 75--2 50 V( vs . SCE).
文摘The relations between conductivity and temperature of YCl3-LiClO4-DMSO system were measured. The cyclic voltammetry, chronoamperometry, chronopotentiometry and X-ray diffraction were used to investigate the electrochemical behavior of Y3+ in YCl3-LiClO4-DMSO system on Pt and Cu cathodes. Experimental results indicate that the electroreduction of Y3+ to Y is irreversible in one step. The Y metal was prepared by potentiostatic electrolysis on Cu electrode in YCl3-LiClO4-DMSO system. The deposits composed of Y over 97% (mass fraction) were obtained. The diffusion coefficient and electron transfer coefficient of Y3+ in YCl3-LiClO4-DMSO system at 298 K are 3.22 x 10(-6) cm(2).s(-1) and 0.22, respectively.
文摘The cyclic voltammetry, current time curve at potential step and potential time curve of galvanostatic method were used to investigate the electrochemical behavior of Er(Ⅲ) in ErCl 3 LiClO 4 DMF(N, N dimethylformamide) system on Pt and Cu electrodes. Results indicate that the electroreducation of Er(Ⅲ) to Er(0) is irreversible on Pt and Cu electrodes, the diffusion coefficient and electron transfer coefficient of Er(Ⅲ) in 0.01 mol/L ErCl 3 0.1 mol/L LiClO 4 DMF system at 303 K are 1.96×10 -6 cm 2·s -1 and 0.081 respectively. The Er metal film was prepared by galvanostatic electrolysis on Cu electrode in ErCl 3 LiClO 4 DMF system at 40 A·m -2 (current density). The deposites composed of Er over 95%(mass fraction) were obtained.
