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 1105-1108

Styrkeområden

Energi

Materialvetenskap

DOI

10.1016/j.elecom.2011.07.005