TY - JOUR
T1 - Bottom-current-collector-free thin-film batteries using LiNi0.8Co0.2O2 epitaxial thin films
AU - Nishio, Kazunori
AU - Horiba, Koji
AU - Nakamura, Naoto
AU - Kitamura, Miho
AU - Kumigashira, Hiroshi
AU - Shimizu, Ryota
AU - Hitosugi, Taro
N1 - Funding Information:
This research was supported by JST-CREST and TOYOTA MOTOR CORPORATION . K. N. acknowledges funding from JSPS Kakenhi Grant no. 17H06674 , and no. 18K14314 . T. H. acknowledges funding from JKA Grant No. 109 and JSPS Kakenhi Grant No. 18H03876 . We thank Toray Research Center, Inc. for the RBS-NRA measurements. Raman spectroscopy measurements were performed at Ookayama Materials Analysis Division, Technical Department, Tokyo Institute of Technology.
PY - 2019/3/15
Y1 - 2019/3/15
N2 - The decrease in the resistance at solid electrolyte and electrode interfaces has become a critical issue in the development of solid-state lithium batteries. To understand the ionic transport properties across solid electrolyte and electrode interfaces, thin-film batteries consisting of flat epitaxial films are of considerable importance. Herein, we report the operation of bottom-current-collector-free thin-film batteries using LiNi0.8Co0.2O2 epitaxial thin films. As the bottom current collector is not inserted between the substrates and LiNi0.8Co0.2O2, the surface of LiNi0.8Co0.2O2 is very flat, with a surface roughness average of approximately 0.44 nm. This study proposes a very flat electrode surface suitable for the investigation of interfacial phenomena at solid electrolyte and electrode interfaces.
AB - The decrease in the resistance at solid electrolyte and electrode interfaces has become a critical issue in the development of solid-state lithium batteries. To understand the ionic transport properties across solid electrolyte and electrode interfaces, thin-film batteries consisting of flat epitaxial films are of considerable importance. Herein, we report the operation of bottom-current-collector-free thin-film batteries using LiNi0.8Co0.2O2 epitaxial thin films. As the bottom current collector is not inserted between the substrates and LiNi0.8Co0.2O2, the surface of LiNi0.8Co0.2O2 is very flat, with a surface roughness average of approximately 0.44 nm. This study proposes a very flat electrode surface suitable for the investigation of interfacial phenomena at solid electrolyte and electrode interfaces.
KW - Epitaxial thin film
KW - Interface resistance
KW - LiNiCoO
KW - Pulsed laser deposition
KW - Solid-state battery
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U2 - 10.1016/j.jpowsour.2019.01.067
DO - 10.1016/j.jpowsour.2019.01.067
M3 - Article
AN - SCOPUS:85060846786
VL - 416
SP - 56
EP - 61
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -