Journal
ELECTROCHIMICA ACTA
Volume 54, Issue 26, Pages 6335-6340Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2009.05.080
Keywords
Pyroprocessing; Nuclear fuel cycle; Platinum anode; LiCl molten salt; Uranium oxide
Categories
Funding
- Korean government (MEST) [M20703030001-08MO303-00110]
- National Research Foundation of Korea [2007-2000148] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The electrochemical behavior of a platinum anode has been investigated during the electrolysis of uranium oxide in a LiCl molten salt. Pt is oxidized to pt(2+) at 2.6V (vs. Li-Pb reference electrode) in the absence of O(2-) ion. The platinum dissolution takes place at a more anodic potential with an increase of O(2-) ion. Although the main anodic process in the electrolysis is the oxygen evolution by oxidation of O(2-) ion at a higher concentration of Li(2)O, a thin film due to the formation of Li(2)PtO(3) was coated on the anode surface. The platinum dissolution proceeds with an intergranular corrosion-like behavior at a low concentration of Li(2)O. (c) 2009 Elsevier Ltd. All rights reserved.
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