TY - JOUR
T1 - Continuous composition spread and electrochemical studies of low cobalt content Li(Ni,Mn,Co)O2 cathode materials
AU - Jung, Jong Seok
AU - Yim, Haena
AU - Parmar, Narendra Singh
AU - Lee, Jae Seung
AU - Choi, Ji Won
N1 - Funding Information:
ReferencesFunding: This research was supported by the KIST Future Resource Program (2E29400), and the Brain Korea 21
Funding Information:
This research was supported by the KIST Future Resource Program (2E29400), and the Brain Korea 21 Plus Project
Publisher Copyright:
© 2019 by the authors.
PY - 2019/6/1
Y1 - 2019/6/1
N2 - Many scientific efforts have been undertaken toward reducing the Co content in LiMn1/3Ni1/3Co1/3O2 cathode materials for thin-film batteries. In this study, we present cathodes with a wide range of Li(Ni, Mn, Co)O2 compositions to determine the material with the best electrochemical performance by changing the ratio of Ni to Mn at a fixed 0.1 at.% of Co by the continuous composition spread sputtering method. The cathode composition measurements by Rutherford backscattering spectroscopy show that the best electrochemical performance is obtained for a composition of Ni:Mn:Co = 19:71:10. The reasons for this improved electrochemical performance are further investigated by X-ray diffraction, electrochemical impedance spectroscopy, Fourier-transform infrared spectroscopy, and X-ray absorption near edge spectroscopy.
AB - Many scientific efforts have been undertaken toward reducing the Co content in LiMn1/3Ni1/3Co1/3O2 cathode materials for thin-film batteries. In this study, we present cathodes with a wide range of Li(Ni, Mn, Co)O2 compositions to determine the material with the best electrochemical performance by changing the ratio of Ni to Mn at a fixed 0.1 at.% of Co by the continuous composition spread sputtering method. The cathode composition measurements by Rutherford backscattering spectroscopy show that the best electrochemical performance is obtained for a composition of Ni:Mn:Co = 19:71:10. The reasons for this improved electrochemical performance are further investigated by X-ray diffraction, electrochemical impedance spectroscopy, Fourier-transform infrared spectroscopy, and X-ray absorption near edge spectroscopy.
KW - Continuous composition spread
KW - Li(Ni; Mn; Co)O cathode
KW - Low cobalt content
KW - Thin film
KW - X-ray near edge spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85066629769&partnerID=8YFLogxK
U2 - 10.3390/coatings9060348
DO - 10.3390/coatings9060348
M3 - Article
AN - SCOPUS:85066629769
SN - 2079-6412
VL - 9
JO - Coatings
JF - Coatings
IS - 6
M1 - 366
ER -