Chemical Stability of Conductive Ceramic Anodes in LiCl-Li 2 O Molten Salt for Electrolytic Reduction in Pyroprocessing

Conductive ceramics are being developed to replace current Pt anodes in the electrolytic reduction of spent oxide fuels in pyroprocessing. While several conductive ceramics have shown promising electrochemical properties in small-scale experiments, their long-term stabilities have not yet been inves...

Full description

Saved in:
Bibliographic Details
Published in:Nuclear engineering and technology 2016, Vol.48 (4), p.997-1001
Main Authors: Kim, Sung-Wook, Kang, Hyun Woo, Jeon, Min Ku, Lee, Sang-Kwon, Choi, Eun-Young, Park, Wooshin, Hong, Sun-Seok, Oh, Seung-Chul, Hur, Jin-Mok
Format: Article
Language:Korean
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Conductive ceramics are being developed to replace current Pt anodes in the electrolytic reduction of spent oxide fuels in pyroprocessing. While several conductive ceramics have shown promising electrochemical properties in small-scale experiments, their long-term stabilities have not yet been investigated. In this study, the chemical stability of conductive $La_{0.33}Sr_{0.67}MnO_3$ in $LiCl-Li_2O$ molten salt at $650^{\circ}C$ was investigated to examine its feasibility as an anode material. Dissolution of Sr at the anode surface led to structural collapse, thereby indicating that the lifetime of the $La_{0.33}Sr_{0.67}MnO_3$ anode is limited. The dissolution rate of Sr is likely to be influenced by the local environment around Sr in the perovskite framework.
ISSN:1738-5733
2234-358X