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

Author(s)
Lee, YejungYe, Byeong UkLee, Dong KyuBaik, Jeong MinYu, Hak KiKim, Myung Hwa
Issued Date
2019-04
DOI
10.1016/j.cap.2019.02.007
URI
https://scholarworks.unist.ac.kr/handle/201301/26401
Fulltext
https://www.sciencedirect.com/science/article/pii/S1567173919300525?via%3Dihub
Citation
CURRENT APPLIED PHYSICS, v.19, no.4, pp.516 - 520
Abstract
We report the synthesis of single crystalline alkali metal vanadate nanowires, Li-vanadate (Li 4 V 10 O 27 ), Na-vanadate (NaV 6 O 15 ), and K-vanadate (KV 4 O 10 ) 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 V 2 O 5 , resulting in increased distance to move without collision, and ultimately in low resistivity at room temperature.
Publisher
Elsevier B.V.
ISSN
1567-1739
Keyword (Author)
Alkali metal vanadateIonic conductivityNanowiresRasch-Hinrichsen resistivity
Keyword
Crystalline materialsIonic conductivityIonsMetal nanoparticlesMetalsNanowiresVanadium pentoxideIonic sizesLow resistivityPer unitPotential barriersSingle nanowiresSingle-crystallineThermal annealing processTransition state theoriesSodium compounds

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