Controlled synthesis of WO3 nanorods and their electrochromic properties in H2SO4 electrolyte

Jinmin Wang; Eugene Khoo; Pooi See Lee; Jan Ma

doi:10.1021/jp901650v

Controlled synthesis of WO₃ nanorods and their electrochromic properties in H₂SO₄ electrolyte

Jinmin Wang, Eugene Khoo, Pooi See Lee, Jan Ma

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

307 Citations (Scopus)

Abstract

Uniform crystalline WO₃ nanorods were synthesized by a lithium- or sulfate-free hydrothermal process with NaCl as a capping agent. It is found that variations in the pH and amount of capping agent have critical influence on the morphologies of the resultant WO₃ nanostructures. The electrochromic film comprised of the as-synthesized crystalline WO₃ nanorods exhibits a fast coloration/bleaching switching, coloration efficiency comparable to that of conventional amorphous WO₃ films, and a high H⁺ ion-insertion ability in 0.5 mol/L H₂SO₄ solution without degradation.

Original language	English
Pages (from-to)	9655-9658
Number of pages	4
Journal	Journal of Physical Chemistry C
Volume	113
Issue number	22
DOIs	https://doi.org/10.1021/jp901650v
Publication status	Published - Jun 4 2009
Externally published	Yes

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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10.1021/jp901650v

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abstract = "Uniform crystalline WO3 nanorods were synthesized by a lithium- or sulfate-free hydrothermal process with NaCl as a capping agent. It is found that variations in the pH and amount of capping agent have critical influence on the morphologies of the resultant WO3 nanostructures. The electrochromic film comprised of the as-synthesized crystalline WO3 nanorods exhibits a fast coloration/bleaching switching, coloration efficiency comparable to that of conventional amorphous WO3 films, and a high H+ ion-insertion ability in 0.5 mol/L H2SO4 solution without degradation.",

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AB - Uniform crystalline WO3 nanorods were synthesized by a lithium- or sulfate-free hydrothermal process with NaCl as a capping agent. It is found that variations in the pH and amount of capping agent have critical influence on the morphologies of the resultant WO3 nanostructures. The electrochromic film comprised of the as-synthesized crystalline WO3 nanorods exhibits a fast coloration/bleaching switching, coloration efficiency comparable to that of conventional amorphous WO3 films, and a high H+ ion-insertion ability in 0.5 mol/L H2SO4 solution without degradation.

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Controlled synthesis of WO₃ nanorods and their electrochromic properties in H₂SO₄ electrolyte

Abstract

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