Misuse of XPS in Analyzing Solid Polymer Electrolytes for Lithium Batteries

Ortal Breuer; Yosef Gofer; Yuval Elias; Miryam Fayena-Greenstein; Doron Aurbach

doi:10.1149/1945-7111/ad2ef3

Misuse of XPS in Analyzing Solid Polymer Electrolytes for Lithium Batteries

Ortal Breuer, Yosef Gofer, Yuval Elias, Miryam Fayena-Greenstein, Doron Aurbach

Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

Abstract

One of the most powerful spectroscopic tools for battery analysis is X-ray photoelectron spectroscopy (XPS); however, its great power, must be accompanied by great responsibility for authenticity. Fluorine is documented to be unstable under XPS conditions, and fluorinated salts used in Li batteries show photodecomposition. As all-solid-state batteries advance, demand for surface characterization is increasing. Here, a popular solid polymer electrolyte comprising a fluorinated salt in a PEO matrix was measured by XPS. Rapid photodecomposition after few minutes produced mainly LiF, initially not found on the surface. Not being aware of such artifacts may lead to an erroneous analysis of the characterized electrochemical system.

Original language	English
Article number	030510
Journal	Journal of the Electrochemical Society
Volume	171
Issue number	3
DOIs	https://doi.org/10.1149/1945-7111/ad2ef3
State	Published - 31 Mar 2024

Keywords

LiF
LiTFSI
PEO
XPS
lithium all-solid-state batteries
solid electrolyte interface
solid polymer electrolyte (SPE)

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Condensed Matter Physics
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1149/1945-7111/ad2ef3

Cite this

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title = "Misuse of XPS in Analyzing Solid Polymer Electrolytes for Lithium Batteries",

abstract = "One of the most powerful spectroscopic tools for battery analysis is X-ray photoelectron spectroscopy (XPS); however, its great power, must be accompanied by great responsibility for authenticity. Fluorine is documented to be unstable under XPS conditions, and fluorinated salts used in Li batteries show photodecomposition. As all-solid-state batteries advance, demand for surface characterization is increasing. Here, a popular solid polymer electrolyte comprising a fluorinated salt in a PEO matrix was measured by XPS. Rapid photodecomposition after few minutes produced mainly LiF, initially not found on the surface. Not being aware of such artifacts may lead to an erroneous analysis of the characterized electrochemical system.",

keywords = "LiF, LiTFSI, PEO, XPS, lithium all-solid-state batteries, solid electrolyte interface, solid polymer electrolyte (SPE)",

author = "Ortal Breuer and Yosef Gofer and Yuval Elias and Miryam Fayena-Greenstein and Doron Aurbach",

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doi = "10.1149/1945-7111/ad2ef3",

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T1 - Misuse of XPS in Analyzing Solid Polymer Electrolytes for Lithium Batteries

AU - Breuer, Ortal

AU - Gofer, Yosef

AU - Elias, Yuval

AU - Fayena-Greenstein, Miryam

AU - Aurbach, Doron

PY - 2024/3/31

Y1 - 2024/3/31

N2 - One of the most powerful spectroscopic tools for battery analysis is X-ray photoelectron spectroscopy (XPS); however, its great power, must be accompanied by great responsibility for authenticity. Fluorine is documented to be unstable under XPS conditions, and fluorinated salts used in Li batteries show photodecomposition. As all-solid-state batteries advance, demand for surface characterization is increasing. Here, a popular solid polymer electrolyte comprising a fluorinated salt in a PEO matrix was measured by XPS. Rapid photodecomposition after few minutes produced mainly LiF, initially not found on the surface. Not being aware of such artifacts may lead to an erroneous analysis of the characterized electrochemical system.

AB - One of the most powerful spectroscopic tools for battery analysis is X-ray photoelectron spectroscopy (XPS); however, its great power, must be accompanied by great responsibility for authenticity. Fluorine is documented to be unstable under XPS conditions, and fluorinated salts used in Li batteries show photodecomposition. As all-solid-state batteries advance, demand for surface characterization is increasing. Here, a popular solid polymer electrolyte comprising a fluorinated salt in a PEO matrix was measured by XPS. Rapid photodecomposition after few minutes produced mainly LiF, initially not found on the surface. Not being aware of such artifacts may lead to an erroneous analysis of the characterized electrochemical system.

KW - LiF

KW - LiTFSI

KW - PEO

KW - XPS

KW - lithium all-solid-state batteries

KW - solid electrolyte interface

KW - solid polymer electrolyte (SPE)

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U2 - 10.1149/1945-7111/ad2ef3

DO - 10.1149/1945-7111/ad2ef3

M3 - مقالة

SN - 0013-4651

VL - 171

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 3

M1 - 030510

ER -

Misuse of XPS in Analyzing Solid Polymer Electrolytes for Lithium Batteries

Abstract

Keywords

All Science Journal Classification (ASJC) codes

UN SDGs

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