Direct measurement of nanoscale lithium diffusion in solid battery materials using radioactive tracer of 8Li

Authors :: Naoaki Kuwata
Hiroyuki Makii
Katsuhisa Nishio
Tatsuhiko Sato
Y. Otokawa
H.S. Jung
S. Kimura
Sunchan Jeong
Yoshikazu Hirayama
Hideki Ueno
Y. X. Watanabe
Y.H. Kim
Makoto Matsuda
Hironobu Ishiyama
Akihiko Osa
M. Mukai
N. Imai
M. Oyaizu
Hiroari Miyatake
Junichi Kawamura
Source :: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 376:379-381
Publication Year :: 2016
Publisher :: Elsevier BV, 2016.
Abstract: We have developed an in situ and nanoscale Li diffusion measurement method in Li battery materials using an α-emitting radioactive 8Li tracer. In this method, while implanting a low-energy (8 keV) 8Li beam, the α particles emitted at a small angle (10°) relative to the sample surface were detected as a function of time. Measurement for Li diffusion coefficients in a spinel phase LiMn2O4 (LMO) thin film has been started, which is used as an electrode in a Li ion secondary battery. An obvious Li diffusion effect in LMO was observed at the sample temperature of 623 K, and the further measurement is underway.

ISSN :: 0168583X
Volume :: 376
Database :: OpenAIRE
Journal :: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Accession number :: edsair.doi...........644a720615e32d3b631c882e61676dfc
Full Text :: https://doi.org/10.1016/j.nimb.2015.12.036

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