Details

Autor(en) / Beteiligte

• Li, Muyun
• Yan, Haoyang
• Kong, Sifan
• Ning, Honglong
• Guo, Chenxiao
• Li, Xinglin
• Qiu, Tian
• Luo, Cheng
• Yao, Rihui
• Peng, Junbiao

Titel

High-Performance and Stability Electrochromic Devices with a Water Isotopologue

Ist Teil von

• The journal of physical chemistry letters, 2023-11, Vol.14 (43), p.9677-9682

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In this report, an ammonium metatungstate (AMT) and ferrous chloride [Fe­(II)­Cl2] electrochromic liquid (ECL) was synthesized using a hydrothermal method, with D2O used as the solvent instead of H2O. The results show that the use of D2O can improve the stability and performance of ECLs. The hydrogen evolution process in electrochromic devices (ECDs) filled with ECL becomes more difficult, while the material exchange process becomes easier. The ECD exhibits a color modulation amplitude of 58%@680 nm at 2 V. After 500 cycles, the device’s performance remains above 95% at a current density of 1.5 mA/cm2. Hydrogen bonds in D2O solutions are expected to exhibit stronger forces compared to those in regular H2O solutions. Therefore, we hypothesize that enhancing the strength of hydrogen bonds in H2O solutions is an effective approach for improving the performance and stability of electrochromic solutions.