The Effect of Crystallinity of Nanoporous WO3 on the Intercalation and Deintercalation of Li+

Ehsan Ahmadi; Mustaffa Ali Azhar; Dede Miftahul Anwar; Monna Rozana; Zainovia Lockman

doi:10.4028/www.scientific.net/AMR.1024.128

Paper Titles

Morphology Controlled Ionothermal Synthesis and Characterization of Ceria Nanomaterials
p.112

Micro Powder Injection Moulding Using Nanosized Powders
p.116

Characterization of Nanocrystalline p-CuO/n-Si Hetrojunction Prepared by RF-Sputtering
p.120

Deposition of Gold Nanoparticles on Linker-Free Silicon Substrate by Spin-Coating
p.124

The Effect of Crystallinity of Nanoporous WO₃ on the Intercalation and Deintercalation of Li⁺
p.128

Effect of Annealing Temperature of Hybrid CeO₂/TiO₂ Nanotubes on the Photocurrent
p.132

Effects of Graphene Nanopletelets on Poly(Lactic Acid)/Poly(Ethylene Glycol) Polymer Nanocomposites
p.136

Comparison on Tensile Properties of Graphene and Multi-Walled Carbon Nanotubes/Epoxy Thin Film Composites
p.140

Finite Element Analysis and Preliminary Fabrication of Flexible Membrane with Embedded Magnetic Nanoparticles
p.147

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1024The Effect of Crystallinity of Nanoporous WO3 on...

The Effect of Crystallinity of Nanoporous WO₃ on the Intercalation and Deintercalation of Li⁺

Abstract:

Nanoporous anodic WO₃ was annealed at three different times of 1h, 2h, and 3h at a constant temperature of 500oC. This was to investigate the intercalation and deintercalation behaviour of Li⁺ in this annealed nanoporous oxide. The as-anodised WO₃ is amorphous and after annealing, monoclinic WO₃ was observed with much higher degree of crystallinity when the time of annealing was increased from 1h to 3h. By electrodiffusion of Li⁺ in the nanoporous structure, an ion exchange between fully oxidized states (W⁶⁺) which is the octahedral coordination dominates (WO₆) and Li⁺ could happen. This causes changing of the colour of the yellowish WO₃ to bluish WO₃.Li₂O. This work showed the effect of annealing time on intercalation of Li⁺ ion with WO₃, however crystallinity can play a good role for electron movement, it cause a decrease in Li⁺ ion interaction with WO₃.

You might also be interested in these eBooks

Advancement of Materials and Nanotechnology III

View Preview

Info:

Periodical:

Advanced Materials Research (Volume 1024)

Pages:

128-131

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1024.128

Citation:

Cite this paper

Online since:

August 2014

Authors:

Ehsan Ahmadi, Mustaffa Ali Azhar, Dede Miftahul Anwar, Monna Rozana, Zainovia Lockman*

Keywords:

Crystalline, Diffusion, Grain Size, Lithium Ion, WO₃

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] C.G. Granqvist, Oxide electrochromics: An introduction to devices and materials, Solar Energy Materials and Solar Cells 99 (0) (2012) 1-13.

DOI: 10.1016/j.solmat.2011.08.021

Google Scholar

[2] C. Ng, Y.H. Ng, A. Iwase, R. Amal, Influence of annealing temperature of WO3 in photoelectrochemical conversion and energy storage for water splitting, ACS Applied Materials and Interfaces 5 (11) (2013) 5269-5275.

DOI: 10.1021/am401112q

Google Scholar

[3] S. Ismail, K.A. Razak, P.W. Jing, Z. Lockman, Tungsten oxide nanoporous structure synthesized via direct electrochemical anodization, in, Vol. 1341, 2011, pp.21-24.

DOI: 10.1063/1.3586946

Google Scholar

[4] S.H. Lee, M.J. Seong, H.M. Cheong, E. Ozkan, E.C. Tracy, S.K. Deb, Effect of crystallinity on electrochromic mechanism of LixWO3 thin films, Solid State Ionics 156 (3-4) (2003) 447-452.

DOI: 10.1016/s0167-2738(02)00732-4

Google Scholar

[5] H. Habazaki, K. Takahiro, S. Yamaguchi, K. Shimizu, P. Skeldon, G.E. Thompson, G.C. Wood, Importance of amorphous-to-crystalline transitions for ionic transport and oxygen generation in anodic films, Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties 80 (5) (2000).

DOI: 10.1080/01418610008212097

Google Scholar

[6] R.B. Goldner, T.E. Haas, G. Seward, K.K. Wong, P. Norton, G. Foley, G. Berera, G. Wei, S. Schulz, R. Chapman, Thin film solid state ionic materials for electrochromic smart windowTM glass, Solid State Ionics 28-30 (PART 2) (1988) 1715-1721.

DOI: 10.1016/0167-2738(88)90448-1

Google Scholar