Electrochemical reactions of the Th4+/Th couple on the tungsten, aluminum and bismuth electrodes in chloride molten salt

	Electrochemical reactions of the Th4+/Th couple on the tungsten, aluminum and bismuth electrodes in chloride molten salt
	Liu K(刘奎); Yuan LY(袁立永); Liu YL(刘雅兰); Liu, K; Yuan, LY; Liu, YL; Zhao, XL; He, H; Ye, GA; Chai, ZF
刊名	ELECTROCHIMICA ACTA
	2014
卷号	130 页码:650-659
英文摘要	This work concerns the electrochemical behaviors of Th4(+) on the tungsten, aluminum and bismuth electrodes in the LiCI-KCI eutectic, respectively, at 773 K. Cyclic voltammetry and square wave voltammetry were employed to investigate the cathodic reduction of Th4+. The results demonstrate that the reduction of Th4+ is a one step process with a transfer of 4 electrons. The reversibility of the Th4+/Th couple on the bismuth film and tungsten electrodes is directly confirmed by the CV. The diffusion coefficient is also calculated to be (2.23 +/- 0.16) x 10-5 and (7.19 +/- 0.12) x 10(-5) cm(2)/s by applying both cyclic voltammetry and chronopotentiometry, respectively. A series of redox couples were confirmed to be associated with the formation of different kinds of Al-Th intermetallic compounds. Compared to Al electrode, a cathodic shift of the reduction potential of the Th4+ is observed on the Al film electrode which is not conducive for the potentiostatic extraction of thorium. The cathodic depolarization gives a shift of 420 mV on the Al electrode, while 490 mV on the Bi film electrode for the reduction of Th4+ compared to the inert W electrode. The reduction potential of Th4+ on the Bi film electrode is 70 mV more anodic than that on the Al electrode. Potentiostatic electrolyses were carried out on an Al plate and Bi liquid electrode to confirm the formation of the Th alloys. Two Al-Th alloys (Al3Th and Al2Th) and one Bi-Th alloy (Bi2Th) were obtained, respectively. (C) 2014 Elsevier Ltd. All rights reserved.
学科主题	Electrochemistry
收录类别	SCI
WOS记录号	WOS:000336880700085
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224994]
专题	高能物理研究所_院士高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Liu K,Yuan LY,Liu YL,et al. Electrochemical reactions of the Th4+/Th couple on the tungsten, aluminum and bismuth electrodes in chloride molten salt[J]. ELECTROCHIMICA ACTA,2014,130:650-659.
APA	刘奎.,袁立永.,刘雅兰.,Liu, K.,Yuan, LY.,...&石伟群.(2014).Electrochemical reactions of the Th4+/Th couple on the tungsten, aluminum and bismuth electrodes in chloride molten salt.ELECTROCHIMICA ACTA,130,650-659.
MLA	刘奎,et al."Electrochemical reactions of the Th4+/Th couple on the tungsten, aluminum and bismuth electrodes in chloride molten salt".ELECTROCHIMICA ACTA 130(2014):650-659.