All fluorine-free lithium battery electrolytes Dedications: In memoriam of Prof. per Jacobsson.
Artikel i vetenskaplig tidskrift, 2014

Fluorine-free lithium battery electrolytes have been prepared from lithium salts with nitrile based anions, LiB(CN)4 or LiDCTA, dissolved in PEGDME or PC. After soaked into electrospun PAN membranes the resulting electrolytes were tested for physical and electrochemical properties and compared with reference PAN electrolytes containing LiPF6 or LiTFSI. The fluorine-free electrolytes were successfully cycled in Li/LiFePO4 cells at room temperature with up to 98% Coulombic efficiency. Small and qualitatively different effects were observed with the addition of Al 2O3 particles to the PAN membranes, which could be of importance for long-term performance. However, for fluorine-free electrolytes to be truly competitive, the relatively low anodic stability and elevated temperature performance must first of all be improved by a change of solvent - or addition of co-solvents. Further work in this direction is encouraged by the strong influence of the solvent (PC or PEGDME) on the properties of the LiDCTA electrolytes demonstrated in this work. © 2013 Elsevier B.V. All rights reserved.

Polymer

Battery

Electrolyte

Fluorine-free

Lithium salt

Författare

Johan Scheers

Chalmers, Teknisk fysik, Kondenserade materiens fysik

D. H. Lim

Chalmers University of Technology

Jae-Kwang Kim

Chalmers, Teknisk fysik, Kondenserade materiens fysik

E. Paillard

North Carolina State University

W. A. Henderson

North Carolina State University

Patrik Johansson

Chalmers, Teknisk fysik, Kondenserade materiens fysik

J. Ahn

Gyeongsang National University

Per Jacobsson

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Journal of Power Sources

0378-7753 (ISSN)

Vol. 251 451-458

Styrkeområden

Transport

Energi

Materialvetenskap

Ämneskategorier

Materialkemi

DOI

10.1016/j.jpowsour.2013.11.042