TY - JOUR
T1 - Synthesis, structure and electrochemical properties of novel Li-Co-Mn-O epitaxial thin-film electrode using layer-by-layer deposition process
AU - Lim, Jaemin
AU - Lee, Soyeon
AU - Suzuki, Kota
AU - Kim, Kyungsu
AU - Kim, Sangryun
AU - Taminato, Sou
AU - Hirayama, Masaaki
AU - Oshima, Yoshifumi
AU - Takayanagi, Kunio
AU - Kanno, Ryoji
N1 - Funding Information:
Sample preparation for STEM observation was supported by the NIMS microstructural characterization platform as a program of “Nanotechnology Platform” of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. The synchrotron radiation experiments were performed as projects approved by the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal No. 2014A1801). This study was supported in part by a Grant-in-Aid for Scientific Research on Innovative Areas “Exploration of nanostructure-property relationships for materials innovation” (No. 25106009 ) and Grant-in-Aid for scientific Research (A) (No. 25248051 ) from the Japan Society for the Promotion of Science .
PY - 2015/4/1
Y1 - 2015/4/1
N2 - A novel epitaxial thin-film electrode for lithium batteries, with a composition of Li0.92Co0.65Mn1.35O4 and a cubic spinel structure, is fabricated on a SrTiO3(111) single-crystal substrate. Fabrication is carried out by layer-by-layer pulsed laser deposition of LiCoO2 with a layered rock-salt structure and LiMn2O4 with a spinel structure. The electrode is found to exhibit unique disordering of the lithium (8a) and transition-metal (16d) sites, leading to a higher rate capability and cycle retention ratio than those for a thin-film electrode with the same composition prepared by a conventional single-step deposition process. The proposed layer-by-layer deposition method allows an expanded range of compositional and structural variations for lithium battery electrode materials.
AB - A novel epitaxial thin-film electrode for lithium batteries, with a composition of Li0.92Co0.65Mn1.35O4 and a cubic spinel structure, is fabricated on a SrTiO3(111) single-crystal substrate. Fabrication is carried out by layer-by-layer pulsed laser deposition of LiCoO2 with a layered rock-salt structure and LiMn2O4 with a spinel structure. The electrode is found to exhibit unique disordering of the lithium (8a) and transition-metal (16d) sites, leading to a higher rate capability and cycle retention ratio than those for a thin-film electrode with the same composition prepared by a conventional single-step deposition process. The proposed layer-by-layer deposition method allows an expanded range of compositional and structural variations for lithium battery electrode materials.
KW - Epitaxial thin film
KW - Layer-by-layer deposition
KW - Lithium battery
KW - Pulsed laser deposition
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U2 - 10.1016/j.jpowsour.2014.12.152
DO - 10.1016/j.jpowsour.2014.12.152
M3 - Article
AN - SCOPUS:84920973462
VL - 279
SP - 502
EP - 509
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -
