TY  - JOUR
AU  - Liang, Yuxin
AU  - Zheng, Tianle
AU  - Sun, Kun
AU  - Xu, Zhuijun
AU  - Guan, Tianfu
AU  - Apfelbeck, Fabian A. C.
AU  - Ding, Pan
AU  - Sharp, Ian D.
AU  - Cheng, Yajun
AU  - Schwartzkopf, Matthias
AU  - Roth, Stephan V.
AU  - Müller-Buschbaum, Peter
TI  - Operando Study Insights into Lithiation/Delithiation Processes in a Poly(ethylene oxide) Electrolyte of All-Solid-State Lithium Batteries by Grazing-Incidence X-ray Scattering
JO  - ACS applied materials & interfaces
VL  - 16
IS  - 26
SN  - 1944-8244
CY  - Washington, DC
PB  - Soc.
M1  - PUBDB-2025-00231
SP  - 33307-33315
PY  - 2024
AB  - Poly(ethylene oxide) (PEO)-based composite electrolytes (PCEs) are considered as promising candidates for next-generation lithium-metal batteries (LMBs) due to their high safety, easy fabrication, and good electrochemical stability. Here, we utilize operando grazing-incidence small-angle and wide-angle X-ray scattering to probe the correlation of electrochemically induced changes and the buried morphology and crystalline structure of the PCE. Results show that the two irreversible reactions, PEO-Li<sup>+</sup> reduction and TFSI– decomposition, cause changes in the crystalline structure, array orientation, and morphology of the PCE. In addition, the reversible Li plating/stripping process alters the inner morphology, especially the PEO-LiTFSI domain radius and distance between PEO-LiTFSI domains, rather than causing crystalline structure and orientation changes. This work provides a new path to monitor a working battery in real time and to a detailed understanding of the Li<sup>+</sup> diffusion mechanism, which is essential for developing highly transferable and interface-stable PCE-based LMBs
LB  - PUB:(DE-HGF)16
C6  - pmid:38913824
UR  - <Go to ISI:>//WOS:001253335500001
DO  - DOI:10.1021/acsami.4c01661
UR  - https://bib-pubdb1.desy.de/record/622179
ER  -