X-ray photoelectron spectroscopy (XPS) is a surface-sensitive quantitative spectroscopic technique that measures the very topmost 50-60 atoms, 0.01 um, 5-10 nm of any surface. It belongs to the family of photoemission spectroscopies in which electron population spectra are obtained by irradiating a material with a beam of X-rays.

In X-ray photoelectron spectroscopy, X-rays are produced when an anode is bombarded with electrons. Learn about monochromator and twin anode X-ray sources.

2022年7月12日 · One of the most common techniques for characterizing Li metal SEI is X-ray photoelectron spectroscopy (XPS). (7,8,13,14) Based on the photoelectric effect, XPS involves the use of photons to eject electrons from materials, with different elements and different atomic environments producing electrons of different kinetic energies.

2024年6月21日 · Ex situ postmortem XPS analysis on both anodes and cathodes over the life span of the cells reveals a continuously growing SEI and CEI for the baseline electrolyte. The cells cycled in the co-solvent electrolyte exhibited a relatively thick and long-term stable CEI (on LNMO), while a slowly growing SEI was determined to form on the Si/graphite.

In XPS instruments, X-rays are generated by bombarding a metallic anode with high-energy electrons. The energy of the emitted X-rays depends on the anode material and beam intensity depends on the electron current striking the anode and its energy.

2023年5月25日 · X-ray photoelectron spectroscopy (XPS) is a popular analytical technique in materials science as it can assess the surface chemistry of a broad range of...

2022年6月26日 · X-ray photoelectron spectroscopy (XPS) plays a crucial role in the surface analysis of different organic and inorganic materials. The information that could be obtained through XPS analysis (chemical state, coordination, particle size) is very important from the material science point of view.

Torr Scientific manufactures and refurbishes X-ray anodes and sources. The anodes emit X-rays in response to an incoming high energy electron beam. When sealed into vacuum devices they become the heart of X-ray tubes which are used in numerous medical, industrial and …

2022年5月18日 · For this, the sample surface is irradiated by soft x-ray photons usually 1486 eV from an Al-anode. The photon penetrates the surface to a depth of approximately 1µm. When a photon interacts with a sample atom, the photon’s energy ionizes core electrons, causing them to be ejected from the atoms.

2021年1月19日 · Against this background, we systematically characterized various lithium samples with X-ray photoelectron spectroscopy (XPS), time-of-flight secondary-ion mass spectrometry (ToF-SIMS), and complementary energy-dispersive X-ray spectroscopy (EDX), resulting in a complete three-dimensional chemical picture of the surface passivation layer.