TY - JOUR
T1 - In Situ Direct Lithium Distribution Analysis Around Interfaces in an All-Solid-State Rechargeable Lithium Battery by Combined Ion-Beam Method
AU - Tsuchiya, Bun
AU - Ohnishi, Junji
AU - Sasaki, Yoshitaka
AU - Yamamoto, Takayuki
AU - Yamamoto, Yuta
AU - Motoyama, Munekazu
AU - Iriyama, Yasutoshi
AU - Morita, Kenji
N1 - Funding Information:
This work was supported by a JSPS KAKENHI Grant-in-Aid for Scientific Research (C) grant number 17K06846 (Bun Tsuchiya) and in part supported by GREEN.
Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/7/23
Y1 - 2019/7/23
N2 - Charge–discharge reaction in all-solid-state battery (SSB) is governed by Li-ion movements and large resistance at solid–solid interface degrades rate capability of the SSBs. Thus, lithium (Li) distribution and its movement around interface in static or operated SSBs should be clarified well. Here, it is reported that combined ion beam analysis of high-energy elastic recoil detection and Rutherford backscattering spectrometry probing 9.0 MeV O4+ beams is a powerful technique to clarify static Li distribution around the interface, and that relative Li concentration change is correctly detected with reliable depth resolution in a few tens of nm scale. It is interesting to note that Li deficient region is formed inside the Li+-conductive crystalline glass solid electrolyte, LATP, at around the LiCoO2/LATP interface with the thickness of 120 ± 30 nm. Additionally, presence of hydrogen around both interfaces and their migration with the voltages are also detected.
AB - Charge–discharge reaction in all-solid-state battery (SSB) is governed by Li-ion movements and large resistance at solid–solid interface degrades rate capability of the SSBs. Thus, lithium (Li) distribution and its movement around interface in static or operated SSBs should be clarified well. Here, it is reported that combined ion beam analysis of high-energy elastic recoil detection and Rutherford backscattering spectrometry probing 9.0 MeV O4+ beams is a powerful technique to clarify static Li distribution around the interface, and that relative Li concentration change is correctly detected with reliable depth resolution in a few tens of nm scale. It is interesting to note that Li deficient region is formed inside the Li+-conductive crystalline glass solid electrolyte, LATP, at around the LiCoO2/LATP interface with the thickness of 120 ± 30 nm. Additionally, presence of hydrogen around both interfaces and their migration with the voltages are also detected.
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U2 - 10.1002/admi.201900100
DO - 10.1002/admi.201900100
M3 - Article
AN - SCOPUS:85065162404
SN - 2196-7350
VL - 6
JO - Advanced Materials Interfaces
JF - Advanced Materials Interfaces
IS - 14
M1 - 1900100
ER -