Skip to main content
padlock icon - secure page this page is secure

Solid-State Synthesis of 70 nm Li4Ti5O12 Particles by Mechanically Activating Intermediates with Amino Acids

Buy Article:

$52.00 + tax (Refund Policy)

A novel synthetic method of fine particles of highly pure Li4Ti5O12 with the smallest possible particle size was proposed. A stoichiometric mixture of CH3COOLi·2H2O and anatase fine particles of ca. 50 nm was calcined at 773 K to obtain an intermediate, comprising Li2TiO3 and unreacted titania. The intermediate was then intensively milled by a planetary ball mill for 1 h. After adding an amino acid, glycine, alanine (ALA), orl-phenylalanine (PHE), the mixture was further milled under a milder condition for another 3 h and subjected to a second calcination at 973 K for 1 h to obtain Li4Ti5O12 with a phase purity above 97%. When we used ALA or PHE as an additive, the microscopically determined average particle size of Li4Ti5O12 was 70±10 nm. The mechanisms and significance of the present two-step calcination with mechanical activation and addition of an amino acid to the intermediate were discussed in terms of the topotactic nature of transformation between the two layer-structured species: Li2TiO3 and Li4Ti5O12.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Research Article

Affiliations: 1: Faculty of Science and Technology, Keio University, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan 2: Institut de Recherche d'Hydro-Québec (IREQ), Lionel-Boulet, Varennes, QC, Canada, J3X 1S1

Publication date: May 1, 2008

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more