• Title/Summary/Keyword: LiClO₄

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The discharge characteristic of Li ion doped MgO film in a flat fluorescent lamp structure

  • Ryu, Si-Hong;Lee, Seong-Eui;Ahn, Sung-Il;Choi, Kyung-Cheol
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08b
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    • pp.1388-1390
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    • 2007

  • This paper investigates how various concentrations of lithium ion influence on crystallization of MgO in thin films formed by spin coating and an the discharge characteristic in a flat fluorescent lamp structure. The XRD results indicate $Li^+$ ion enhances the growth of MgO crystal in a spin coated thin film. The discharge property with the $Li^+$ ion doped MgO films show the lithium ion in MgO film clearly reduce the initial discharge voltages of test devices. Interestingly, the test panels with various doped MgO film have somewhat higher static memory margin of than that of pure-MgO owing probably to the pore structure of spin coated MgO films. The CL spectra, which confirm that the doping creates defects energy levels in the band gap of MgO, show the $F^+$ center is the main defects in doped MgO films.

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Electrolytic Reduction of 1 kg-UO2 in Li2O-LiCl Molten Salt using Porous Anode Shroud (Li2O-LiCl 용융염에서의 다공성 양극 슈라우드를 이용한1kg 우라늄산화물의 전해환원)

  • Choi, Eun-Young;Lee, Jeong;Jeon, Min Ku;Lee, Sang-Kwon;Kim, Sung-Wook;Jeon, Sang-Chae;Lee, Ju Ho;Hur, Jin-Mok
    • Journal of the Korean Electrochemical Society
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    • v.18 no.3
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    • pp.121-129
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    • 2015

  • The platinum anode for the electrolytic reduction process is generally surrounded by a nonporous ceramic shroud with an open bottom to offer a path for $O_2$ gas produced on the anode surface and prevent the corrosion of the electrolytic reducer. However, the $O^{2-}$ ions generated from the cathode are transported only in a limited fashion through the open bottom of the anode shroud because the nonporous shroud hinders the transport of the $O^{2-}$ ions to the anode surface, which leads to a decrease in the current density and an increase in the operation time of the process. In the present study, we demonstrate the electrolytic reduction of 1 kg-uranium oxide ($UO_2$) using the porous shroud to investigate its long-term stability. The $UO_2$ with the size of 1~4mm and the density of $10.30{\sim}10.41g/cm^3$ was used for the cathode. The platinum and 5-layer STS mesh were used for the anode and its shroud, respectively. After the termination of the electrolytic reduction run in 1.5 wt.% $Li_2O-LiCl$ molten salt, it was revealed that the U metal was successfully converted from the $UO_2$ and the anode and its shroud were used without any significant damage.

  • https://doi.org/10.5229/JKES.2015.18.3.121 인용 PDF KSCI