Combinatorial exploration of newly pseudo-quintenary layered-type Li-Ni-Co-Fe-Ti oxides

Kenjiro Fujimoto, Tomoyuki Kanno, Keita Ikezawa, Yuichiro Imanari, Maiko Sakai, Kenji Nakane, Shigeru Ito

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.

Original languageEnglish
Title of host publicationCombinatorial and High-Throughput Methods in Materials Science
Pages52-58
Number of pages7
DOIs
Publication statusPublished - 2012
Event2011 MRS Fall Meeting - Boston, MA, United States
Duration: 28 Nov 20112 Dec 2011

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1425
ISSN (Print)0272-9172

Conference

Conference2011 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA
Period28/11/112/12/11

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