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Novel insights into electrical transport mechanism in ionic-polaronic glasses

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39912732" target="_blank" >RIV/00216275:25310/18:39912732 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.1111/jace.15271" target="_blank" >http://dx.doi.org/10.1111/jace.15271</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1111/jace.15271" target="_blank" >10.1111/jace.15271</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Novel insights into electrical transport mechanism in ionic-polaronic glasses

  • Original language description

    Transformation of electrical transport from ionic to polaronic in glasses, which are a potential class of new cathode materials, has been investigated in four series containing WO3/MoO3 and Li+/Na+ ions, namely: xWO(3)-(30-0.5x)Li2O-(30-0.5x)ZnO-40P(2)O(5), xWO(3)-(30-0.5x)Na2O-(30.5x)ZnO-40P(2)O(5), xMoO(3)-(30-0.5x)Li2O-(30-0.5x)ZnO-40P(2)O(5), and xMoO(3)-(30-0.5x)Na2O-(30-0.5x)ZnO-40P(2)O(5), 0 x 60, (mol%). This study reports a detailed analysis of the role of structural modifications and its implications on the origin of electrical transport in these mixed ionic-polaron glasses. Raman spectra show the clustering of WO6 units by the formation of W-O-W bonds in glasses with high WO3 content while the coexistence of MoO4 and MoO6 units is evidenced in glasses containing MoO3 with no clustering of MoO6 octahedra. Consequently, DC conductivity of tungstate glasses with either Li+ or Na+ exhibits a transition from ionic to polaronic showing a minimum at about 20-30 mol% of WO3 as a result of ion-polaron interactions followed by a sharp increase for six orders of magnitude as WO3 content increases. The formation of WO6 clusters involved in W-O-W linkages for tungsten glasses plays a key role in significant increase in DC conductivity. On the other hand, DC conductivity is almost constant for glasses containing MoO3 suggesting an independent ionic and polaronic transport pathways for glasses containing 10-50 mol% of MoO3.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10402 - Inorganic and nuclear chemistry

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2018

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of the American Ceramic Society

  • ISSN

    0002-7820

  • e-ISSN

  • Volume of the periodical

    101

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    15

  • Pages from-to

    1221-1235

  • UT code for WoS article

    000419096700027

  • EID of the result in the Scopus database

    2-s2.0-85039985454