Jump to main content
Jump to site search

Issue 10, 2018
Previous Article Next Article

Ce-Doped bundled ultrafine diameter tungsten oxide nanowires with enhanced electrochromic performance

Author affiliations

Abstract

Cerium (Ce)-doped tungsten oxide nanostructures were synthesised using a simple solvothermal method from cerium chloride salt (CeCl3·7H2O) and tungsten hexachloride (WCl6) precursors. The as-prepared samples were thoroughly characterised using electron microscopies, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The electrochromic performance of different samples was evaluated using a custom-built UV-VIS spectrometer and an electrochemistry technique. The results showed that the as-prepared samples underwent morphological evolution with the increase in the Ce/W molar ratio, from long, thin and bundled nanowires, through shorter and thicker nanowires to mixed nanowire bundles and nanoparticle agglomerates. From electrochemical testing, we found that the Ce-doped tungsten oxides exhibited higher optical contrasts of 44.3%, 49.7% and 39.4% for the 1 : 15, 1 : 10 and 1 : 5 Ce/W ratios respectively, compared with 37.4% for the pure W18O49 nanowires. The Ce/W = 1 : 15 samples presented an improved colouration efficiency of 67.3 cm2 C−1 against 62 cm2 C−1 for pure W18O49. This work demonstrated that the Ce-doped W18O49 nanowires are very promising candidate materials for the design and construction of electrochemical chromic devices with largely improved efficiency, contrast and stability. The results from this work suggested that smart electrochromic devices based on current Ce-doped WOx nanomaterials could be further developed for future energy-related applications.

Graphical abstract: Ce-Doped bundled ultrafine diameter tungsten oxide nanowires with enhanced electrochromic performance

Back to tab navigation

Supplementary files

Publication details

The article was received on 10 Nov 2017, accepted on 31 Jan 2018 and first published on 31 Jan 2018


Article type: Paper
DOI: 10.1039/C7NR08385H
Citation: Nanoscale, 2018,10, 4718-4726
  •   Request permissions

    Ce-Doped bundled ultrafine diameter tungsten oxide nanowires with enhanced electrochromic performance

    T. Kunyapat, F. Xu, N. Neate, N. Wang, A. D. Sanctis, S. Russo, S. Zhang, Y. Xia and Y. Zhu, Nanoscale, 2018, 10, 4718
    DOI: 10.1039/C7NR08385H

Search articles by author

Spotlight

Advertisements