Issue 48, 2014

Hierarchical SnO2@NiO core/shell nanoflake arrays as energy-saving electrochromic materials

Abstract

Hierarchical SnO2@NiO core/shell nanoflake array on FTO-coated glass has been synthesized by a facile two-step solution method toward energy-saving electrochromism. Noticeably, the SnO2@NiO core/shell nanoflake array film shows a sustained memory effect, which is conducive to saving energy in commercial applications. The SnO2@NiO film exhibits an outstanding electrochromism, including large transmittance modulation (85.3%), fast switching speed (1.7 s and 2.4 s), high coloration efficiency (43.8 cm2 C−1), and excellent reversibility and cycling durability at 550 nm. The enhanced electrochromic performances can be attributed to the unique core/shell architecture, which provides large numbers of active sites for electrochemical reactions, fast ion and electron transfer channels and good strain accommodation ability.

Graphical abstract: Hierarchical SnO2@NiO core/shell nanoflake arrays as energy-saving electrochromic materials

Supplementary files

Article information

Article type
Paper
Submitted
30 Sep 2014
Accepted
13 Oct 2014
First published
20 Oct 2014

J. Mater. Chem. C, 2014,2, 10409-10417

Author version available

Hierarchical SnO2@NiO core/shell nanoflake arrays as energy-saving electrochromic materials

J. Zhang, J. Tu, D. Zhou, H. Tang, L. Li, X. Wang and C. Gu, J. Mater. Chem. C, 2014, 2, 10409 DOI: 10.1039/C4TC02204A

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