TY - GEN
T1 - Combinatorial exploration of newly pseudo-quintenary layered-type Li-Ni-Co-Fe-Ti oxides
AU - Fujimoto, Kenjiro
AU - Kanno, Tomoyuki
AU - Ikezawa, Keita
AU - Imanari, Yuichiro
AU - Sakai, Maiko
AU - Nakane, Kenji
AU - Ito, Shigeru
PY - 2012
Y1 - 2012
N2 - In order to decrease the use of cobalt element as in LiCoO 2,which is mainly used for cathode materials in lithium ion secondary batteries, a newly pseudo-quintenary layered-type Fe-doped Li-Ni-Co-Ti oxides library was created using the combinatorial technology "M-ist Combi system" based on the electrostatic spray deposition method. The starting materials used were LiNO3, Ni(NO3)2· 6H2O, Co(NO3)2·6H2O, Fe(NO3)3·-9H2O and TiO2 nano-slurry. These materials were dissolved or dispersed in a mixture of ethanol and butyl carbitol and mixed in a predefined ratio, respectively. Subsequently, each of the mixtures was sprayed and dried on a grounded reaction plate that was heated to 400°C. The deposited powder was sintered at 700°C for 5 hours in air atmosphere. Phase identification of the obtained powder library was evaluated by a combinatorial powder x-ray diffractometer. A reaction phase diagram was established from the structure information and chemical composition by ICP-AES measurement. From all results, single-phase layered-type compounds showed the composition region that included many Co and Ni elements. On the other hand, single phase spinel-type compounds existed in the Ti-rich composition region.
AB - In order to decrease the use of cobalt element as in LiCoO 2,which is mainly used for cathode materials in lithium ion secondary batteries, a newly pseudo-quintenary layered-type Fe-doped Li-Ni-Co-Ti oxides library was created using the combinatorial technology "M-ist Combi system" based on the electrostatic spray deposition method. The starting materials used were LiNO3, Ni(NO3)2· 6H2O, Co(NO3)2·6H2O, Fe(NO3)3·-9H2O and TiO2 nano-slurry. These materials were dissolved or dispersed in a mixture of ethanol and butyl carbitol and mixed in a predefined ratio, respectively. Subsequently, each of the mixtures was sprayed and dried on a grounded reaction plate that was heated to 400°C. The deposited powder was sintered at 700°C for 5 hours in air atmosphere. Phase identification of the obtained powder library was evaluated by a combinatorial powder x-ray diffractometer. A reaction phase diagram was established from the structure information and chemical composition by ICP-AES measurement. From all results, single-phase layered-type compounds showed the composition region that included many Co and Ni elements. On the other hand, single phase spinel-type compounds existed in the Ti-rich composition region.
UR - http://www.scopus.com/inward/record.url?scp=84879329418&partnerID=8YFLogxK
U2 - 10.1557/opl.2012.205
DO - 10.1557/opl.2012.205
M3 - Conference contribution
AN - SCOPUS:84879329418
SN - 9781627482356
T3 - Materials Research Society Symposium Proceedings
SP - 52
EP - 58
BT - Combinatorial and High-Throughput Methods in Materials Science
T2 - 2011 MRS Fall Meeting
Y2 - 28 November 2011 through 2 December 2011
ER -