Articles
  • Synthesis of large diameter plat-like Ca3Co4O9 particle by molten salt method 
  • Ningbo Fenga, Yingrong Jinb, Sujun Guanb, Yi Hea, Liang Haoc and Yun Lud,*
  • a School of Materials Science and Engineering, Xihua University No. 99, Jinzhou Road, Chengdu, Sichuan, 610039, China b Graduate School, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan c College of Mechanical Engineering, Tianjin University of Science and Technology No. 1038, Dagu Nanlu, Hexi District, Tianjin 300222, China d Graduate School & Faculty of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
Abstract
The Ca3Co4O9 was synthesized by molten salt method using CoO, CaCO3 and CaCl2 as stating materials. The thermal behaviorwas investigated by directly measuring and comparing the temperatures of the mixture and reference material simultaneously. The obtained compounds were characterized by XRD, SEM and EDS. The results showed that CaCO3 and CaCl2 form amolten salt solution at about 628 oC. The highly c axis oriented plat-like Ca3Co4O9 particles were obtained at 800 oC for 4 hrsand the Ca3Co4O9 particles reaches about 300 µm in diameter and 20 µm in thickness. The template formation processdominates the nucleation of Ca3Co4O9 and the shape transformation to plat-like shape has happened in the growth ofCa3Co4O9 nuclei.

Keywords: Molten salt, Nucleation, Growth, Ca3Co4O9 plat-like particle

This Article

  • 2016; 17(10): 1028-1032

    Published on Oct 31, 2016