Journal Article FZJ-2025-03465

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Influence of State‐of‐Charge‐Dependent Decomposition Kinetics at the $Li_6PS_5Cl|LiNi_{0.83}Co_{0.11}Mn_{0.06}O_2$ Interface on Solid‐State Battery Performance

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2025
Wiley-VCH Weinheim

ChemElectroChem 12(16), 2500237 () [10.1002/celc.202500237]

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Abstract: Solid-state batteries represent a new approach to energy storage, offering superior safety, higher energy density, and extended cycle life compared to conventional liquid electrolyte-based lithium-ion batteries. However, the practical application of solid-state batteries is hindered by degradation phenomena, particularly on interfaces between components, compromising their long-term performance. In this work, the kinetics of the state-of-charge-dependent electrolyte degradation at the LiNi0.83Co0.11Mn0.06O2│Li6PS5Cl interface, as well as its influence on cycling performance, are systematically studied electrochemically in solid-state battery half cells. Combining cycling and C-rate experiments with electrochemical impedance spectroscopy reveals that half cells charged to higher cutoff potentials (≥3.8 V versus In/InLi; ≥4.4 V versus Li+/Li) exhibit significantly faster degradation kinetics. These influence the cycling performance leading to a plateau in the charge capacity at ≥3.8 V versus In/InLi, while the electrolyte degradation does not affect the bulk electrode transport. Overall, this work emphasizes the importance to investigate state-of-charge-dependent decomposition kinetics in composite electrodes to better understand cycling behavior.

Classification:

Contributing Institute(s):
  1. Helmholtz-Institut Münster Ionenleiter für Energiespeicher (IMD-4)
Research Program(s):
  1. 1222 - Components and Cells (POF4-122) (POF4-122)

Appears in the scientific report 2025
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Medline ; Creative Commons Attribution CC BY 4.0 ; DOAJ ; OpenAccess ; Article Processing Charges ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; DOAJ Seal ; Essential Science Indicators ; Fees ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection
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 Datensatz erzeugt am 2025-08-12, letzte Änderung am 2026-02-23


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