XPS Analysis of K-based Reference Compounds to Allow Reliable Studies of Solid Electrolyte Interphase in K-ion Batteries

نویسندگان

چکیده

As for Li- and Na-ion batteries, the electrolyte reactivity (i.e., salt solvent decomposition) also plays a crucial role in electrochemical performance of K-ion batteries (KIBs). However, X-ray photoelectron spectroscopy (XPS) analysis solid interphase (SEI) KIBs remains based on Li-ion literature so far. This may lead to incorrect interpretations results considering that first ionization potential difference between alkali metals is expected significantly change binding energy values observed by XPS given M-based (M = Li, Na, or K) compound. Therefore, this work aims at providing characterization numerous commercial K-based reference compounds, including some were still missing literature. In particular, absolute relative are compared corresponding Li Na counterparts. will thus help researchers get reliable SEI KIBs.

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ژورنال

عنوان ژورنال: ACS applied energy materials

سال: 2021

ISSN: ['2574-0962']

DOI: https://doi.org/10.1021/acsaem.1c02400