Chem. J. Chinese Universities ›› 2014, Vol. 35 ›› Issue (12): 2662.doi: 10.7503/cjcu20140405
• Physical Chemistry • Previous Articles Next Articles
LI Mei, LI Wei, HAN Wei*(), ZHANG Milin, YAN Yongde
Received:
2014-04-28
Online:
2014-12-10
Published:
2014-11-29
Contact:
HAN Wei
E-mail:weihan@hrbeu.edu.cn
Supported by:
CLC Number:
TrendMD:
LI Mei, LI Wei, HAN Wei, ZHANG Milin, YAN Yongde. Electrochemical Behavior of Pr(Ⅲ) in the LiCl-KCl Melt on a Ni Electrode†[J]. Chem. J. Chinese Universities, 2014, 35(12): 2662.
Fig.1 Cyclic voltammograms of LiCl-KCl melts before(a, b) and after(c, d) the addition of PrCl3(1.25×10-4 mol/L) at 873 K S=0.322 cm2, scan rate: 0.1 V/s. a. LiCl-KCl, Mo electrode; b. LiCl-KCl, Ni electrode; c. LiCl-KCl-PrCl3, Mo electrode; d. LiCl-KCl-PrCl3, Ni electrode.
Fig.2 Variation of cathodic peak current as a function of the potential scan rate on a Mo electrode(S=0.322 cm2) in LiCl-KCl-PrCl3[c(PrCl3)=1.25×10-4 mol/L] melt at 873 K
Fig.3 Square wave voltammogram on a Ni electrode in LiCl-KCl-PrCl3[c(PrCl3)=1.25×10-4 mol/L] melt(S=0.322 cm2) at 873 K Pulse height: 25 mV; potential step: 1 mV; frequency: 30 Hz.
Fig.5 Open-circuit transient curve by potentiosta-tic electrolysis at -2.3 V(vs. Ag/AgCl) for 60 s on a Ni electrode(S=0.322 cm2) in LiCl-KCl-PrCl3[c(PrCl3)=1.25×10-4 mol/L] melt at 873 K
Fig.6 XRD patterns of Pr-Ni alloys by potentiostatic electrolysis on a Ni electrode(S=2.3 cm2) in LiCl-KCl-PrCl3[c(PrCl3)=1.25×10-4 mol/L] melt at 873 K a. -1.2 V for 10 h; b. -1.6 V for 8 h; c. -1.8 V for 6 h; d. -2.0 V for 2 h.
Fig.7 SEM images of Pr-Ni alloys by potentiostatic electrolysis on a Ni electrode(S=2.3 cm2) in LiCl-KCl-PrCl3[c(PrCl3)=1.25×10-4 mol/L] melt at 873 K (A) -1.2 V, 10 h; (B) -1.6 V, 8 h; (C) -1.8 V, 6 h; (D) -2.0 V, 2 h.
Fig.8 EDS analysis of Pr-Ni alloy by potentiostatic electrolysis on a Ni electrode(S=2.3 cm2) in the LiCl-KCl-PrCl3[c(PrCl3)=1.25×10-4 mol/L] melt at 873 K (A) -1.2 V, 10 h; (B) -1.6 V, 8 h; (C) -1.8 V, 6 h; (D) -2.0 V, 2 h.
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