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The migration of alkali metal (Na+, Li+, and K+) ions in single crystalline vanadate nanowires: Rasch-Hinrichsen resistivity

Title
The migration of alkali metal (Na+, Li+, and K+) ions in single crystalline vanadate nanowires: Rasch-Hinrichsen resistivity
Authors
Lee, YejungYe, Byeong UkLee, Dong KyuBaik, Jeong MinYu, Hak KiKim, Myung Hwa
Ewha Authors
김명화
SCOPUS Author ID
김명화scopus
Issue Date
2019
Journal Title
CURRENT APPLIED PHYSICS
ISSN
1567-1739JCR Link

1878-1675JCR Link
Citation
CURRENT APPLIED PHYSICS vol. 19, no. 4, pp. 516 - 520
Keywords
Alkali metal vanadateIonic conductivityRasch-Hinrichsen resistivityNanowires
Publisher
ELSEVIER SCIENCE BV
Indexed
SCI; SCIE; SCOPUS; KCI WOS scopus
Document Type
Article
Abstract
We report the synthesis of single crystalline alkali metal vanadate nanowires, Li-vanadate (Li4V10O27), Na-vanadate (NaV6O15), and K-vanadate (KV4O10) and their electrical properties in a single nanowire configuration. Alkali metal vanadate nanowires were obtained by a simple thermal annealing process with vanadium hydroxides(V(OH)(3)) nanoparticles containing Li+, Na+, and K+ ions and further the analysis of the migration of charged particles Li+, Na+, and K+ in vanadate by measuring the conductivity of them. We found that their ionic conductivities can be empirically explained by the Rasch-Hinrichsen resistivity and interpreted on the basis of transition state theory. Our results thus indicate that the Li ion shows the lowest potential barrier of ionic conduction due to its small ionic size. Additionally, Na-vanadate has the lowest ion number per unit V2O5, resulting in increased distance to move without collision, and ultimately in low resistivity at room temperature.
DOI
10.1016/j.cap.2019.02.007
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자연과학대학 > 화학·나노과학전공 > Journal papers
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