Effect of ZrOCl2 Doping on Proton Conductive Performances of the Phosphosilicate Gels

doi:10.3969/j.issn.0251-0790.2012.01.005

Abstract

Abstract: Effect of ZrOCl₂·8H₂O doping on proton conductive properties of phosphosilicate gel was investigated by means of sol-gel method. The results prove that ZrOCl₂·8H₂O can increase proton conductivity of the gel, and that the sample with ZrOCl₂·8H₂O content of 0.97%(mass fraction) shows maximum proton conductivity of 2.38 S/m at 130 ℃. The doped samples, on which no H₃PO₄ were found to precipitate during storage under a condition of R.H.(relative humidity) 40% for a month, exhibited no apparent changes in proton conductive performances. NMR measurements revealed that introduction of ZrOCl₂ to the gel could decrease the formation of isolated PO^3-₄ structural units and increase cross-linking between and tetrahedrons, thus resulted in an increase in both proton conductivity and chemical stability.

Key words: Ionic conductor, Phosphosilicate gel, Electrolyte, Proton conductivity, Sol-gel method, ZrOCl₂ doping

CLC Number:

O613
TB332

TrendMD:

HU Lin-Na, PENG Hui-Fen, HE Jun-Hua, AN Li-Yuan, GAO Chang-Hong. Effect of ZrOCl₂ Doping on Proton Conductive Performances of the Phosphosilicate Gels[J]. Chem. J. Chinese Universities, 2012, 33(01): 32.

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Effect of ZrOCl₂ Doping on Proton Conductive Performances of the Phosphosilicate Gels

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