Synthesis of NASICON-A molecular precursor-based approach

Porkodi, P and Yegnaraman, V and Kamaraj, P and Kalyanavalli, V and Jeyakumar, D (2008) Synthesis of NASICON-A molecular precursor-based approach. Chemistry of Materials, 20 (20). pp. 6410-6419.

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Abstract

Phosphosilicate molecular precursor for the synthesis of NASICON, natrium super ionic conductor,13; Na1+xZr2SixP3-xO12 (x ) 1 and 2) has been devised and prepared by the hydrolysis of tetraethoxysilane13; (TEOS) employing sodium phosphate solution. The molecular precursor was reacted with Zr(OC3H7)4 in13; ethanol under solvolytic condition to yield nano precursor material of NASICON. This material was13; annealed at high temperature to yield phase-pure NASICON. The molecular precursor was characterized13; using 31P NMR, FTIR spectral data, powder XRD pattern and TG/DTA studies. The structure of the13; molecular precursor was deduced from the powder XRD data, which indicates the presence of edge13; sharing tetrahedral arrangement of -O-Si-O-P-O-Si- chain. The NASICON precursor material13; was characterized using TG/DTA, FTIR, TEM, SEM, MAS 31P NMR and XRD. The conductivity of the13; synthesized NASICON material was measured using the pellet annealed at 900 xB0;C and was found to be13; 5.5 x10-3 S cm-1. The details on the preliminary investigation are presented in this paper.

Item Type: Article
Additional Information: Copyright for this article belongs to American Chemical Society
Uncontrolled Keywords: NASICON;Phosphosilicate molecular
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Users 11 not found.
Date Deposited: 15 Dec 2008
Last Modified: 17 Jun 2010 08:39
URI: http://nal-ir.nal.res.in/id/eprint/4937

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