TEMPERATURE-DEPENDENCE OF SODIUM-ION DIFFUSION IN NAXWO2CL2

P G BRUCE, J NOWINSKI, V C GIBSON

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The diffusion of Na+ ions in a new tungsten bronze, NaxWO2Cl2, is examined. The temperature dependence of the Na+ ion self diffusion coefficient for three compositions Na0.06WO2Cl2, Na0.85WO2Cl2 and Na0.93WO2Cl2 is presented. The structure of the sodium deficient compound differs from that of the two sodium rich materials. It is noted that the activation energy is similar for Na0.85WO2Cl2 and Na0.93WO2Cl2 but significantly larger than that for Na0.06WO2Cl2 and this is interpreted in terms of mutual repulsions between the Na+ ions. The self diffusion coefficients range from 2.3 to 11.0 x 10(-13) cm2 s-1 at 75-degrees-C, these values are some four orders of magnitude lower than typical values for Li+ ion diffusion in intercalation hosts.

Original languageEnglish
Pages (from-to)41-45
Number of pages5
JournalSolid State Ionics
Volume50
Issue number1-2
Publication statusPublished - Jan 1992

Keywords

  • INTERCALATION

Fingerprint

Dive into the research topics of 'TEMPERATURE-DEPENDENCE OF SODIUM-ION DIFFUSION IN NAXWO2CL2'. Together they form a unique fingerprint.

Cite this