Fast Li+ ion conductance in chloroborate glasses II-diborates and metaborates

D. P. Button; R. P. Tandon; H. L. Tuller; D. R. Uhlmann

doi:10.1016/0167-2738(81)90339-8

Fast Li+ ion conductance in chloroborate glasses II-diborates and metaborates

D. P. Button, R. P. Tandon, H. L. Tuller, D. R. Uhlmann

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

The understanding of FIC in amorphous materials is limited in part due to a lack of reliable structural models. Alkali oxide additions to B₂O₃ are known to modify the glass network initially by the formation of BO₄-tetrahedral units at the expense of trigonal BO₃ units. Our recent studies on the system 36.4 mol%Li₂Z(Z=0,Cl₂)-63.6 mol% B₂O₃ demonstrate that major structural changes in the network also accompany the large increases in ion conductivity upon the replacement of oxygen with chlorine. In the present study, the scope of our investigation has been extended to glasses of composition Li₂Z.2B₂O₃ (diborate) and Li₂Z.B₂O₃ (metaborate). This enables us to study glasses at several different total Li contents lying in different regimes of network structure, as a function of Cl additions. Results of extensive measurements of electrical conductivity, glass transition and density as a function of glass composition and temperature are used to emphasize the importance of considering structural changes along with ion transport variations upon modification of glass composition. Suggestions for the cause of observed structure-transport relations are presented.

Original language	English (US)
Pages (from-to)	655-658
Number of pages	4
Journal	Solid State Ionics
Volume	5
Issue number	C
DOIs	https://doi.org/10.1016/0167-2738(81)90339-8
State	Published - Oct 1981

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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title = "Fast Li+ ion conductance in chloroborate glasses II-diborates and metaborates",

abstract = "The understanding of FIC in amorphous materials is limited in part due to a lack of reliable structural models. Alkali oxide additions to B2O3 are known to modify the glass network initially by the formation of BO4-tetrahedral units at the expense of trigonal BO3 units. Our recent studies on the system 36.4 mol%Li2Z(Z=0,Cl2)-63.6 mol% B2O3 demonstrate that major structural changes in the network also accompany the large increases in ion conductivity upon the replacement of oxygen with chlorine. In the present study, the scope of our investigation has been extended to glasses of composition Li2Z.2B2O3 (diborate) and Li2Z.B2O3 (metaborate). This enables us to study glasses at several different total Li contents lying in different regimes of network structure, as a function of Cl additions. Results of extensive measurements of electrical conductivity, glass transition and density as a function of glass composition and temperature are used to emphasize the importance of considering structural changes along with ion transport variations upon modification of glass composition. Suggestions for the cause of observed structure-transport relations are presented.",

author = "Button, {D. P.} and Tandon, {R. P.} and Tuller, {H. L.} and Uhlmann, {D. R.}",

note = "Funding Information: This work is being supported by the University of California, Lawrence Berkeley Laboratory (Subcontract #4503810) under contract to the Department Energy(contract #W-7h05-ENG-48).",

year = "1981",

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doi = "10.1016/0167-2738(81)90339-8",

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AU - Button, D. P.

AU - Tandon, R. P.

AU - Tuller, H. L.

AU - Uhlmann, D. R.

N1 - Funding Information: This work is being supported by the University of California, Lawrence Berkeley Laboratory (Subcontract #4503810) under contract to the Department Energy(contract #W-7h05-ENG-48).

PY - 1981/10

Y1 - 1981/10

N2 - The understanding of FIC in amorphous materials is limited in part due to a lack of reliable structural models. Alkali oxide additions to B2O3 are known to modify the glass network initially by the formation of BO4-tetrahedral units at the expense of trigonal BO3 units. Our recent studies on the system 36.4 mol%Li2Z(Z=0,Cl2)-63.6 mol% B2O3 demonstrate that major structural changes in the network also accompany the large increases in ion conductivity upon the replacement of oxygen with chlorine. In the present study, the scope of our investigation has been extended to glasses of composition Li2Z.2B2O3 (diborate) and Li2Z.B2O3 (metaborate). This enables us to study glasses at several different total Li contents lying in different regimes of network structure, as a function of Cl additions. Results of extensive measurements of electrical conductivity, glass transition and density as a function of glass composition and temperature are used to emphasize the importance of considering structural changes along with ion transport variations upon modification of glass composition. Suggestions for the cause of observed structure-transport relations are presented.

AB - The understanding of FIC in amorphous materials is limited in part due to a lack of reliable structural models. Alkali oxide additions to B2O3 are known to modify the glass network initially by the formation of BO4-tetrahedral units at the expense of trigonal BO3 units. Our recent studies on the system 36.4 mol%Li2Z(Z=0,Cl2)-63.6 mol% B2O3 demonstrate that major structural changes in the network also accompany the large increases in ion conductivity upon the replacement of oxygen with chlorine. In the present study, the scope of our investigation has been extended to glasses of composition Li2Z.2B2O3 (diborate) and Li2Z.B2O3 (metaborate). This enables us to study glasses at several different total Li contents lying in different regimes of network structure, as a function of Cl additions. Results of extensive measurements of electrical conductivity, glass transition and density as a function of glass composition and temperature are used to emphasize the importance of considering structural changes along with ion transport variations upon modification of glass composition. Suggestions for the cause of observed structure-transport relations are presented.

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Fast Li+ ion conductance in chloroborate glasses II-diborates and metaborates

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