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Title: Synthesis, characterization and proton transport property of crystalline - zirconium titanium phosphate, a tetravalent bimetallic acid salt
Authors: Thakkar, Rakesh
Chudasama, Uma
Keywords: Proton conductor
Proton transport property
Solid electrolyte
Tetravalent bimetallic acid salt
Zirconium titanium phosphate
Issue Date: 2009
Publisher: CSIR
Abstract: An advanced inorganic material of the class of tetravalent bimetallic acid (TBMA) salt - zirconium titanium phosphate (ZTP) has been synthesized by sol gel route. ZTP has been characterized for elemental analysis by ICP-AES, FTIR, TGA and X-ray diffraction studies. Ion exchange capacity (IEC) of material was determined and effect of calcination (373-773 K) on IEC studied. Chemical resistivity of material was assessed in acids, bases and organic solvents. Protons present in structural hydroxyl groups in ZTP indicate good potential to exhibit solid-state proton conduction. Proton transport property of ZTP was explored by measuring specific conductance at different temperatures (303-423 K) at 10 K intervals, over a frequency range (1-32 MHz) at a signal level below 1 V. Proton transport properties of zirconium phosphate and titanium phosphate, synthesized and characterized under identical conditions, have been investigated for comparative studies. In all cases, conductivity decreases with increasing temperature. ZTP exhibits enhanced conductance and mechanism of transportation is proposed to be Grotthuss type.
Page(s): 312-318
ISSN: 0022-4456
Source:JSIR Vol.68(04) [April 2009]

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