期刊
JOURNAL OF SYNCHROTRON RADIATION
卷 25, 期 -, 页码 468-472出版社
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S1600577517017489
关键词
operando electrochemical cells; metal-ion batteries; X-ray diffraction; X-ray absorption
资金
- Russian Science Foundation [17-73-30006]
- NGP [2016-1/NGP]
A new multi-purpose operando electrochemical cell was designed, constructed and tested on the Swiss-Norwegian Beamlines BM01 and BM31 at the European Synchrotron Radiation Facility. Single-crystal sapphire X-ray windows provide a good signal-to-noise ratio, excellent electrochemical contact because of the constant pressure between the electrodes, and perfect electrochemical stability at high potentials due to the inert and non-conductive nature of sapphire. Examination of the phase transformations in the Li1-xFe0.5Mn0.5PO4 positive electrode (cathode) material at C/2 and 10C charge and discharge rates, and a study of the valence state of the Ni cations in the Li1-xNi0.5Mn1.5O4 cathode material for Li-ion batteries, revealed the applicability of this novel cell design to diffraction and spectroscopic investigations of high-power/high-voltage electrodes for metal-ion batteries.
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