TY - JOUR
T1 - Electrochemical studies on the redox behavior of zirconium in the LiF-NaF eutectic melt
AU - Xu, Liang
AU - Xiao, Yanping
AU - Xu, Qian
AU - van Sandwijk, Anthonie
AU - Zhao, Zhuo
AU - Song, Qiushi
AU - Cai, Yanqing
AU - Yang, Yongxiang
PY - 2017
Y1 - 2017
N2 - In the present paper, a detailed study of the redox behavior of zirconium in the eutectic LiF-NaF system was carried out on an inert molybdenum electrode at 750 °C. Several transient electrochemical methods were used such as cyclic voltammetry, square wave voltammetry, chronopotentiometry, and open circuit voltammetry. The reduction of Zr (IV) was found to follow a two-step mechanism of Zr (IV)/Zr (II) and Zr (II)/Zr at the potentials of about −1.10 and −1.50 V versus Pt, respectively. The theoretical evaluations of the number of transferred electrons according to both cyclic voltammetry and square wave voltammetry further confirmed the Zr reduction mechanism. The estimations of Zr (IV) diffusion coefficient in the LiF-NaF eutectic melt at 750 °C through cyclic voltammetry and chronopotentiometry are in fair agreement, as to be approximately 1.13E-5 and 2.42E-5 cm2/s, respectively.
AB - In the present paper, a detailed study of the redox behavior of zirconium in the eutectic LiF-NaF system was carried out on an inert molybdenum electrode at 750 °C. Several transient electrochemical methods were used such as cyclic voltammetry, square wave voltammetry, chronopotentiometry, and open circuit voltammetry. The reduction of Zr (IV) was found to follow a two-step mechanism of Zr (IV)/Zr (II) and Zr (II)/Zr at the potentials of about −1.10 and −1.50 V versus Pt, respectively. The theoretical evaluations of the number of transferred electrons according to both cyclic voltammetry and square wave voltammetry further confirmed the Zr reduction mechanism. The estimations of Zr (IV) diffusion coefficient in the LiF-NaF eutectic melt at 750 °C through cyclic voltammetry and chronopotentiometry are in fair agreement, as to be approximately 1.13E-5 and 2.42E-5 cm2/s, respectively.
KW - LiF-NaF
KW - Redox behavior
KW - Zirconium electrochemical properties
UR - http://www.scopus.com/inward/record.url?scp=85016072667&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2017.03.028
DO - 10.1016/j.jnucmat.2017.03.028
M3 - Article
AN - SCOPUS:85016072667
SN - 0022-3115
VL - 488
SP - 295
EP - 301
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
ER -