Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 13, Issue 10, Pages 1105-1108Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2011.07.005
Keywords
LiMnPO4; Ionic liquid-based polymer electrolyte; Ionic conductivity; Manganese dissolution; Electrochemical performance
Categories
Funding
- STINT
- NRF
- Swedish Energy Agency
- Chalmers Area of Advance-Energy
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A porous well defined LiMnPO4 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 LiPF6 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. (C) 2011 Elsevier B.V. All rights reserved.
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