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Search for a space charge layer in thin film battery materials with low-energy muons
Comprehens Res Org Sci & Soc CROSS, Neutron Sci & Technol Ctr, Tokai, Ibaraki 3191106, Japan..
KTH, School of Engineering Sciences (SCI), Applied Physics, Materials and Nanophysics.ORCID iD: 0000-0003-4441-8882
Chalmers Univ Technol, Dept Phys, SE-41296 Gothenburg, Sweden..ORCID iD: 0000-0001-8879-7875
Chalmers Univ Technol, Dept Phys, SE-41296 Gothenburg, Sweden..
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2023 (English)In: Proceedings 15th International Conference on Muon Spin Rotation, Relaxation and Resonance (SR) / [ed] Prando, G Pratt, F, IOP Publishing , 2023, Vol. 2462, article id 012046Conference paper, Published paper (Refereed)
Abstract [en]

In an all solid state Li-ion battery, it is crucial to reduce ionic resistivity at the interface between the electrode and the electrolyte in order to enhance Li+ mobility across the interface. Recent first principles calculations predict the presence of a space-charge layer (SCL) at the interface due to the difference in the Li+ chemical potential at the interface between two different materials, as in the metal-semiconductor junction in electronic devices. However, the presence of SCL has never been experimentally observed. Our first attempt in a fresh multilayer sample, Cu(10 nm)/Li3PO4(50 nm)/LiCoO2(100 nm) on a sapphire substrate, with low-energy mu+SR (LE mu+SR) revealed a gradual change in the nuclear magnetic field distribution width as a function of implantation depth even across the interface between Li3PO4 and LiCoO2. This implies that the change in the field distribution width at SCL of the sample is too small to be detected by LE mu+SR.

Place, publisher, year, edition, pages
IOP Publishing , 2023. Vol. 2462, article id 012046
Series
Journal of Physics Conference Series, ISSN 1742-6588
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:kth:diva-329873DOI: 10.1088/1742-6596/2462/1/012046ISI: 000995428200046Scopus ID: 2-s2.0-85152627820OAI: oai:DiVA.org:kth-329873DiVA, id: diva2:1774461
Conference
15th International Conference on Muon Spin Rotation, Relaxation and Resonance (SR), AUG 28-SEP 02, 2022, Univ Parma, Parma, ITALY
Note

QC 20230626

Available from: 2023-06-26 Created: 2023-06-26 Last updated: 2023-12-07Bibliographically approved

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Nocerino, ElisabettaForslund, Ola KenjiMånsson, Martin

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