TY  - JOUR
AU  - Windmüller, Anna
AU  - Tsai, Chih-Long
AU  - Möller, Sören
AU  - Balski, Matthias
AU  - Sohn, Yoo Jung
AU  - Uhlenbruck, Sven
AU  - Guillon, Olivier
TI  - Enhancing the performance of high-voltage LiCoMnO$_{4}$ spinel electrodes by fluorination
JO  - Journal of power sources
VL  - 341
SN  - 0378-7753
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2016-07310
SP  - 122 - 129
PY  - 2017
AB  - With the aim of improving the electrochemical properties of the LiCoMnO4 high-voltage spinel for lithium ion battery applications, LiCoMnO4-yFy (y = 0, 0.05, 0.1) compounds were synthesized by a two-step solid-state reaction at 800 °C. The stoichiometry of the samples was verified by nuclear reaction analysis for the fluorine stoichiometry, inert gas fusion analysis for the oxygen stoichiometry, and inductively coupled plasma optical emission spectroscopy for the cation stoichiometry. X-ray diffraction analysis and scanning electron microscopy revealed increasing phase purity and changing microstructure upon fluorine incorporation. Electrochemical characterizations were carried out in battery test cells using a liquid electrolyte. The samples show poor coulombic efficiency, due to liquid electrolyte decomposition. However, fluorinated spinels demonstrated significantly improved capacities of up to 18% and improved cycling stability of up to 20%, compared to their non-fluorinated counterparts.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000393003400015
DO  - DOI:10.1016/j.jpowsour.2016.11.100
UR  - https://juser.fz-juelich.de/record/824755
ER  -