Fine particle preparation and electrode property of layered-type LiNi 0.4Co0.6-xTixO2

Kenjiro Fujimoto, Keita Ikezawa, Shigeru Ito

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

Abstract

Layered-type LiNi0.4Co0.6-xTixO 2 (0≤x≤0.2) were prepared by conventional electrostatic spray deposition method for studying the correlation of crystal structure and electrode property. Starting materials used were LiNO3, Ni(NO 3)2·6H2O, Co(NO3) 2·6H2O and TiO2 nano-slurry. These materials were dissolved or dispersed in a mixture of ethanol and butyl carbitol and mixed by predefined ratio, respectively. Then, each of mixtures was sprayed and dried on the grounded reaction plate which was heated at 400°C. Deposited powder was sintered at 700°C for 10 hours in air atmosphere. Library of LiNi0.4Co0.6-xTixO2 (0≤x≤0.2) was indexed R-3m by powder X-ray diffraction patterns and its chemical compositions from ICP emission spectroscopy method corresponded to the initial composition conditions. From the diffracted intensity ratio of I (003)/I(104) and the structure refinement by Rietveld method, it was found that the proportion of cation mixing effect increased with increasing amount of Ti among of transition metals. And, from the observation by scanning electron microscope and the calculation by Scherrer's method, the crystallite size decreased with increasing amount of Ti element. From the charge-discharge property of LiNi0.4Co0.6-xTi xO2 (0≤x≤0.2) library, LiNi0.4Co 0.5Ti0.1O2 showed better cycle behavior among the library.

Original languageEnglish
Title of host publicationCombinatorial and High-Throughput Methods in Materials Science
Pages65-69
Number of pages5
DOIs
Publication statusPublished - 1 Dec 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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