Improved Elevated Temperature Performance of Al-Intercalated V(2)O(5) Electrospun Nanofibers for Lithium-Ion Batteries
Cheah, YL; Aravindan, V; Madhavi, S
HERO ID
1256774
Reference Type
Journal Article
Year
2012
Language
English
PMID
| HERO ID | 1256774 |
|---|---|
| In Press | No |
| Year | 2012 |
| Title | Improved Elevated Temperature Performance of Al-Intercalated V(2)O(5) Electrospun Nanofibers for Lithium-Ion Batteries |
| Authors | Cheah, YL; Aravindan, V; Madhavi, S |
| Journal | ACS Applied Materials & Interfaces |
| Volume | 4 |
| Issue | 6 |
| Page Numbers | 3270-3277 |
| Abstract | Al-inserted vanadium pentoxide (V(2)O(5)) nanofibers (Al-VNF) are synthesized by simple electrospinning technique. Powder X-ray diffraction (XRD) patterns confirm the formation of phase-pure structure. Elemental mapping and XPS studies are used to confirm chemical insertion of Al in VNF. Surface morphological features of as-spun and sintered fibers with Al-insertion are investigated by field-emission scanning electron microscopy (FE-SEM). Electrochemical Li-insertion behavior of Al-VNFs are explored as cathode in half-cell configuration (vs. Li) using cyclic voltammetry and galvanostatic charge-discharge studies. Al-VNF (Al(0.5)V(2)O(5)) shows an initial discharge capacity of ∼250 mA h g(-1) and improved capacity retention of >60% after 50 cycles at 0.1 C rate, whereas native VNF showed only ∼40% capacity retention at room temperature. Enhanced high current rate and elevated temperature performance of Al-VNF (Al(1.0)V(2)O(5)) is observed with improved capacity retention (∼70%) characteristics. Improved performance of Al-inserted VNF is mainly attributed to the retention of fibrous morphology, apart from structural stabilization during electrochemical cycling. |
| Doi | 10.1021/am300616k |
| Pmid | 22616641 |
| Wosid | WOS:000305716900062 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal: ACS applied materials & interfaces ISSN: 1944-8252 |
| Is Public | Yes |
| Language Text | English |
| Is Qa | No |