The migration of alkali metal (Na+, Li+, and K+) ions in single crystalline vanadate nanowires: Rasch-Hinrichsen resistivity
- 주제(키워드) Alkali metal vanadate , Ionic conductivity , Rasch-Hinrichsen resistivity , Nanowires
- 주제(기타) Materials Science, Multidisciplinary; Physics, Applied
- 설명문(일반) [Lee, Yejung; Kim, Myung Hwa] Ewha Womans Univ, Dept Chem & Nanosci, Seoul, South Korea; [Ye, Byeong Uk; Baik, Jeong Min] UNIST, KIST UNIST Ulsan Ctr Convergent Mat, Sch Mech & Adv Mat Engn, Ulsan, South Korea; [Lee, Dong Kyu; Yu, Hak Ki] Ajou Univ, Dept Mat Sci & Engn, Suwon 16499, South Korea; [Lee, Dong Kyu; Yu, Hak Ki] Ajou Univ, Dept Energy Syst Res, Suwon 16499, South Korea
- 발행기관 ELSEVIER SCIENCE BV
- 발행년도 2019
- URI http://www.dcollection.net/handler/ewha/000000160154
- 본문언어 영어
- Published As http://dx.doi.org/10.1016/j.cap.2019.02.007
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
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.
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