Multilayer Electrolyte Cell: A New Tool for Identifying Electrochemical Performances of High Voltage Cathode Materials > Publication | UNIST YK RESEARCH

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Multilayer Electrolyte Cell: A New Tool for Identifying Electrochemical Performances of High Voltage Cathode Materials
Author
Nina Mahootcheian Asl, Jung-Hyun Kim, Nicholas P. W. Pieczonka, Zhongyi Liu, & Youngsik Kim
Journal
Electrochemistry Communication
Vol
32
Page
1-4
Year
2010-2013
Multilayer electrolyte cell (MEC) was designed and developed as a new tool for investigating electrode/electrolyte interfacial reactions in a battery system. The MEC consists of two liquid electrolytes separated by a solid electrolyte which prevents electrolyte crossover while selectively transporting Li+ ions. The MEC successfully reproduced the performance of LiFePO4 comparable with that obtained from coin cells. In addition, the origin of capacity fading in LiNi0.5Mn1.5O4full-cell (with graphite negative electrode) was studied using the MEC. The performance of LiNi0.5Mn1.5O4 MEC full-cell was superior to that of coin full-cell by eliminating the Mn dissolution problem on graphite negative electrode as evidenced by transmission electron microscopyanalysis. The MEC can be a strong tool for identifying the electrochemical performances of future high voltage positive electrode materials and their electrode/electrolyte interfacial reactions.