Correction to: Reversible Zn²⁺ Insertion in Tungsten Ion Activated Titanium Dioxide Nanocrystals for Electrochromic Windows

Correction to: Nano-Micro Lett. (2021) 13:196 10.1007/s40820-021-00719-y

In the original version of this article, there is an unintentional wrong description of the x-coordinate in Fig. 2d. The correct Fig. 2 is provided in this correction. This changes none of the conclusions of the manuscript.

Fig. 2.

Characterizations of W-doped TiO₂ NC films. a Surface and cross-sectional (inset) SEM images of a W4 film. b Voltammograms of the TiO₂ and W4 NC films at 1 mV s⁻¹ in the 0–1.3 V (vs. Zn²⁺/Zn) window in 1 M ZnSO₄ aqueous electrolyte. c Optical transmittance spectra of the TiO₂ and W4 NC films at fully colored (dot lines) and bleached (solid lines) states. d In situ optical transmittance of a W4 NC film at 550 nm in potential steps of 0–1.3 V