Search for a space charge layer in thin film battery materials with low-energy muons
Paper i proceeding, 2023

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 μ +SR (LE μ +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 μ +SR.


Jun Sugiyama

Comprehensive Research Organization for Science and Society

E. Nocerino

Kungliga Tekniska Högskolan (KTH)

Ola Kenji Forslund

Chalmers, Fysik, Materialfysik

Yasmine Sassa

Chalmers, Fysik, Materialfysik

Martin Månsson

Kungliga Tekniska Högskolan (KTH)

Shigeru Kobayashi

Tokyo Institute of Technology

Kazunori Nishio

Tokyo Institute of Technology

Taro Hitosugi

Tokyo Institute of Technology

Andreas Suter

Paul Scherrer Institut

Thomas Prokscha

Paul Scherrer Institut

Journal of Physics: Conference Series

17426588 (ISSN) 17426596 (eISSN)

Vol. 2462 1 012046

15th International Conference on Muon Spin Rotation, Relaxation and Resonance, MuSR 2022
Parma, Italy,

Framtidens Lågdimensionella Skyrmion Material

Vetenskapsrådet (VR) (2017-05078), 2019-06-01 -- 2021-12-31.


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