XPS (PHI-5000C ESCA system) was used to analyze elemental composition of LiFePO 4 electrode surface. To analyze the depth distribution of SEI layer components, 4 kV argon-ion sputtering was performed to strip off substance from the …

X-ray photoelectron spectroscopy (XPS or ESCA) curve fitting procedures, reference materials and useful notes are listed here to provide a starting point for the consistent interpretation of XPS spectra.

The XPS Spectra section provides raw and processed survey spectra, chemical state spectra, BE values, FWHM values, and overlays of key spectra. Atom% values from surveys are based on sample, as received, and Scofield cross-sections.

2016年6月3日 · The chemical composition and valence state of LiFePO 4 /C material was confirmed by XPS analysis.

We established a novel and accurate strategy to detect the lithium content in LiFePO4 by X-ray photoelectron spectroscopy (XPS). As-prepared LiFePO4 samples were characterized by X-ray diffraction spectroscopy and XPS.

2012年8月1日 · High performance PPy/PEG-LiFePO 4 nanocomposites as cathode materials were synthesized by solvothermal method and simple chemical oxidative polymerization of pyrrole (Py) monomer on the surface of LiFePO 4 particles.

2010年9月28日 · In this work, we have experimentally evidenced the valence electronic structure of LiFePO 4 and of its delithiated compound FePO 4 by X-ray photoelectron spectroscopy (XPS), which allows a visualization of the occupied densities of states (DOS) in the valence band.

Download scientific diagram | F 1s, O 1s, C 1s and P 2p core peaks XPS spectra of LiFePO4 electrode from fresh and aged cells (MC samples).

2012年1月19日 · XPS analyzes allow to differentiate the oxidation states of iron in LiFePO 4 (Fe 2+) and FePO 4 (Fe 3+) at the extreme surface of the electrode materials and thus to follow the evolution of the redox process at the surface upon cycling.

Figure 4 shows the high-resolution X-ray photoelectron spectroscopy (XPS) spectra of the Li 1s, Fe 3p, Fe 2p, P 2p, O 1s and C 1s core levels to determine the oxidation states of the elements in...