Articles
  • Phase and electrical properties of Ca3Co4O9 ceramic prepared by a citrate sol-gel route

  • S D Yudantoa,*, S A Chandraa, R Robertoa, D P Utamaa, V O Herlinab and Lusianaa

  • aNational Research and Innovation Agency, Puspiptek, Banten, 15314, Indonesia
    bUniversitas Teknologi Sumbawa, Nusa Tenggara Barat, 84371, Indonesia

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Ca3Co4O9 is a ceramic material with the potential for application as a thermoelectric material. Several methods have been developed to manufacture the Ca3Co4O9 material. In this work, the Ca3Co4O9 ceramic was synthesized via citrate sol-gel route followed by mechanical milling. The samples after sintering at 850 oC for 3 and 6 hours were characterized for XRD studies. Based on XRD results, single phase of Ca3Co4O9 was shown in all samples. The crystallite size of Ca3Co4O9 samples in a range of 53.91-66.54 nm. The electrical measurement of Ca3Co4O9 sample showed an insulator phenomenon from 20 K to 80 K and a metallic behavior from 90 K to room temperature


Keywords: thermoelectric, sol-gel, electrical, insulator, metallic

This Article

  • 2022; 23(3): 287-291

    Published on Jun 30, 2022

  • 10.36410/jcpr.2022.23.3.287
  • Received on Oct 24, 2021
  • Revised on Feb 3, 2022
  • Accepted on Feb 10, 2022

Correspondence to

  • S D Yudanto

  • National Research and Innovation Agency, Puspiptek, Banten, 15314, Indonesia
    Tel : +6281213024663 Fax: +62217560553

  • E-mail: sigi012@brin.go.id