View : 56 Download: 0

Unidirectional growth of single crystalline beta-Na0.33V2O5 and alpha-V2O5 nanowires driven by controlling the pH of aqueous solution and their electrochemical performances for Na-ion batteries

Title
Unidirectional growth of single crystalline beta-Na0.33V2O5 and alpha-V2O5 nanowires driven by controlling the pH of aqueous solution and their electrochemical performances for Na-ion batteries
Authors
Lee, YejungOh, Seung MiPark, BoyeonYe, Byeong UkLee, Nam-SukBaik, Jeong MinHwang, Seong-JuKim, Myung Hwa
Ewha Authors
황성주김명화
SCOPUS Author ID
황성주scopus; 김명화scopus
Issue Date
2017
Journal Title
CRYSTENGCOMM
ISSN
1466-8033JCR Link
Citation
vol. 19, no. 34, pp. 5028 - 5037
Publisher
ROYAL SOC CHEMISTRY
Indexed
SCI; SCIE; SCOPUS WOS
Abstract
We describe a novel synthetic route of highly single crystalline sodium vanadate (beta-Na0.33V2O5) and vanadium pentoxide (alpha-V2O5) nanowires via a simple thermal annealing process followed by the formation of amorphous nanoparticles of V(OH)(3) and Na-containing V(OH)(3) precursors prepared by controlling the pH of precursor solutions. The distinct crystal growth process suggests that the intercalation of Na ions is governed by the pH of the aqueous solution. In addition, the binding nature to the amorphous V(OH)(3) nanoparticle precursors could be a key factor in determining the unidirectional growth of highly single crystalline beta-Na0.33V2O5 and alpha-V2O5 nanowires. The obtained single crystalline beta-Na0.33V2O5 nanowire shows promising electrode performance for sodium-ion batteries (SIB) with greater discharge capacity and better rate characteristics compared with those of the alpha-V2O5 nanowire. The superior electrode functionality of beta-Na0.33V2O5 over alpha-V2O5 is attributable to its better charge transfer kinetics and its higher structural and morphological stability.
DOI
10.1039/c7ce00781g
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE