Ion transport in hydrated sodium slicates (water glasses) of varying water content

N. J. Garcia, Malcolm David Ingram, J. C. Bazan

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Ionic conductivities in hydrated sodium silicate gels (water glasses) of SiO2/Na2O 3.41:1 mole ratio have been obtained by impedance spectroscopy at temperatures above and below the thermally determined glass transition temperature. Conductivities at T. are in the range 10(-6) to 10(-7) S cm(-1), which are similar to those found recently in several kinds of polymer electrolyte. It is suggested that the absence of a mixed alkali effect and a strong dependence on water imply that conductivities are largely protonic in nature and involve strong interactions between protons, water molecules and the silicate framework. (C) 2002 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)113-122
Number of pages9
JournalSolid State Ionics
Volume146
DOIs
Publication statusPublished - 2002

Keywords

  • silicate gels
  • protonic conductivity
  • mixed cation effect
  • solid electrolytes
  • SI-29 NMR

Cite this

Ion transport in hydrated sodium slicates (water glasses) of varying water content. / Garcia, N. J.; Ingram, Malcolm David; Bazan, J. C.

In: Solid State Ionics, Vol. 146, 2002, p. 113-122.

Research output: Contribution to journalArticle

@article{8d16b0b30d7b49cd96cb963ad945411b,
title = "Ion transport in hydrated sodium slicates (water glasses) of varying water content",
abstract = "Ionic conductivities in hydrated sodium silicate gels (water glasses) of SiO2/Na2O 3.41:1 mole ratio have been obtained by impedance spectroscopy at temperatures above and below the thermally determined glass transition temperature. Conductivities at T. are in the range 10(-6) to 10(-7) S cm(-1), which are similar to those found recently in several kinds of polymer electrolyte. It is suggested that the absence of a mixed alkali effect and a strong dependence on water imply that conductivities are largely protonic in nature and involve strong interactions between protons, water molecules and the silicate framework. (C) 2002 Elsevier Science B.V. All rights reserved.",
keywords = "silicate gels, protonic conductivity, mixed cation effect, solid electrolytes, SI-29 NMR",
author = "Garcia, {N. J.} and Ingram, {Malcolm David} and Bazan, {J. C.}",
year = "2002",
doi = "10.1016/S0167-2738(01)00990-0",
language = "English",
volume = "146",
pages = "113--122",
journal = "Solid State Ionics",
issn = "0167-2738",
publisher = "Elsevier",

}

TY - JOUR

T1 - Ion transport in hydrated sodium slicates (water glasses) of varying water content

AU - Garcia, N. J.

AU - Ingram, Malcolm David

AU - Bazan, J. C.

PY - 2002

Y1 - 2002

N2 - Ionic conductivities in hydrated sodium silicate gels (water glasses) of SiO2/Na2O 3.41:1 mole ratio have been obtained by impedance spectroscopy at temperatures above and below the thermally determined glass transition temperature. Conductivities at T. are in the range 10(-6) to 10(-7) S cm(-1), which are similar to those found recently in several kinds of polymer electrolyte. It is suggested that the absence of a mixed alkali effect and a strong dependence on water imply that conductivities are largely protonic in nature and involve strong interactions between protons, water molecules and the silicate framework. (C) 2002 Elsevier Science B.V. All rights reserved.

AB - Ionic conductivities in hydrated sodium silicate gels (water glasses) of SiO2/Na2O 3.41:1 mole ratio have been obtained by impedance spectroscopy at temperatures above and below the thermally determined glass transition temperature. Conductivities at T. are in the range 10(-6) to 10(-7) S cm(-1), which are similar to those found recently in several kinds of polymer electrolyte. It is suggested that the absence of a mixed alkali effect and a strong dependence on water imply that conductivities are largely protonic in nature and involve strong interactions between protons, water molecules and the silicate framework. (C) 2002 Elsevier Science B.V. All rights reserved.

KW - silicate gels

KW - protonic conductivity

KW - mixed cation effect

KW - solid electrolytes

KW - SI-29 NMR

U2 - 10.1016/S0167-2738(01)00990-0

DO - 10.1016/S0167-2738(01)00990-0

M3 - Article

VL - 146

SP - 113

EP - 122

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

ER -