Journal of the Korean Electrochemical Society (전기화학회지)

The Korean Electrochemical Society (한국전기화학회)
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Electrochemical Behavior of Li-B Alloy Anode - Liquid Cadmium Cathode (LCC) System for Electrodeposition of Nd in LiCl-KCl

  • Kim, Gha-Young (Nuclear Fuel Cycle Process Development Division, Korea Atomic Energy Research Institute) ;
  • Shin, Jiseon (Nuclear Fuel Cycle Process Development Division, Korea Atomic Energy Research Institute) ;
  • Kim, Tack-Jin (Nuclear Fuel Cycle Process Development Division, Korea Atomic Energy Research Institute) ;
  • Shin, Jung-Sik (Nuclear Fuel Cycle Process Development Division, Korea Atomic Energy Research Institute) ;
  • Paek, Seungwoo (Nuclear Fuel Cycle Process Development Division, Korea Atomic Energy Research Institute)
  • Received : 2015.06.29
  • Accepted : 2015.07.31
  • Published : 2015.08.31
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Abstract

The performance of Li-B alloy as anode for molten salt electrolysis was firstly investigated. The crystalline phase of the prepared Li-B alloy was identified as $Li_7B_6$. The potential profile of Li-B alloy anode was monitored during the electrodeposition of $Nd^{3+}$ onto an LCC (liquid cadmium cathode) in molten LiCl-KCl salt at $500^{\circ}C$. The potential of Li-B alloy was increased from -2.0 V to -1.4 V vs. Ag/AgCl by increasing the applied current from 10 to $50mA{\cdot}cm^{-2}$. It was found that not only the anodic dissolution of Li to $Li^+$ but also the dissolution of the atomic lithium ($Li^0$) into the LiCl-KCl eutectic salt was observed, following the concomitant reduction of $Nd^{3+}$ by the $Li^0$ in Li-B alloy. It was expected that the direct reduction could be restrained by maintaining the anode potential higher that the deposition potential of neodymium.

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References

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