Highly porous LiMnPO4 in combination with an ionic liquid-based polymer gel electrolyte for lithium batteries
Artikel i vetenskaplig tidskrift, 2011
A porous well defined LiMnPO(4) cathode material is synthesized by a sol-gel method. The electrochemical performance of the cathode material is evaluated in a cell with an ionic liquid-based polymer electrolyte (0.5 M LITFSI in EMlmTFSI) and a lithium metal electrode. The results are compared to a cell with a traditional organic carbonate-based electrolyte (1 M LiPF(6) in EC/DMC). The cell with the ionic liquid-based polymer electrolyte presents an enhanced electrochemical intercalation performance of lithium ions, a high electrochemical stability window of 5 V, and an excellent cycling ability as compared with the organic based counterpart. Furthermore, the ionic liquid-based polymer gel electrolyte effectively prevents the dissolution of manganese - otherwise a common problem.
electrochemical performance
mn
cathode material
challenges
powders
LiMnPO(4)
iron phosphate
Ionic liquid-based polymer electrolyte
Electrochemical performance
Manganese dissolution
fe
Ionic conductivity
substitution
Författare
Jae-Kwang Kim
Chalmers, Teknisk fysik, Kondenserade materiens fysik
C. R. Shin
Gyeongsang National University
J. H. Ahn
Gyeongsang National University
Aleksandar Matic
Chalmers, Teknisk fysik, Kondenserade materiens fysik
Per Jacobsson
Chalmers, Teknisk fysik, Kondenserade materiens fysik
Electrochemistry Communications
1388-2481 (ISSN)
Vol. 13 10 1105-1108Styrkeområden
Energi
Materialvetenskap
DOI
10.1016/j.elecom.2011.07.005