State analysis of cathode active materials using XPS.
For the evaluation of lithium-ion battery materials! Analyzing chemical bonding states using X-ray photoelectron spectroscopy.
Regarding the NMC reagent, an evaluation of the valence of metal oxides was conducted through XPS state analysis. Qualitative analysis was performed on commercially available NMC reagents, yielding values for the NiMnCo ratio that are close to the specifications of the reagent. Additionally, F and C, which are thought to originate from the binder component, were also detected. 【Analysis of NMC Reagent (Partial)】 ■ The main oxides of Ni, Mn, and Co are inferred to be NiO (Ni2+), MnO2 (Mn4+), and Co3O4 (a mixed valence of Co2+ and Co3+). ■ C, O, and F show a peak shift consistent with organic compounds thought to originate from the binder. ■ Peak assignments are inferred based on various literature and databases. *For more details, please download the PDF or feel free to contact us.
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【Principle of XPS】 ■Calculate binding energy from the energy of X-rays and photoelectrons ■It is possible to identify elements from peak positions ■Peak positions shift due to differences in chemical states (valence, bonding state) (chemical shift) ■By utilizing chemical shifts, it is possible to estimate the chemical bonding states of each element *For more details, please download the PDF or feel free to contact us.
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Aites was established in 1993, originating from the quality assurance department of the IBM Japan Yasu office. Based on the technical expertise cultivated through cutting-edge defect analysis and reliability assurance of electronic components at the IBM Japan Yasu office, we have provided various products and services that support the development and manufacturing of semiconductors, displays, organic EL, solar cells, and electronic components to customers both domestically and internationally.