Transparent Zinc-Mesh Electrodes for Solar-Charging Electrochromic Windows

Area of Science:

• Materials Science
• Energy Storage
• Optoelectronics

Background:

• Zinc-anode-based electrochromic devices (ZECDs) integrate electrochromic and energy storage functions for transparent electronics.
• Current ZECDs are limited by opaque zinc anodes, hindering transparency.

Purpose of the Study:

• To develop a transparent zinc anode for advanced ZECDs.
• To demonstrate a flexible transparent electrode for ZECD windows.
• To explore ZECDs for solar-charging smart window applications.

Main Methods:

• Fabrication of a flexible transparent zinc-mesh electrode.
• Integration into an 80 cm² ZECD window device.
• Evaluation of electrochromic performance, including switching times, optical contrast, and coloration efficiency.
• Assessment of solar-charging capabilities for smart windows.

Main Results:

• Achieved rapid switching times (3.6s coloration, 2.5s bleaching).
• Demonstrated high optical contrast (67.2%) and excellent coloration efficiency (131.5 cm²/C).
• Confirmed suitability for large-area, solar-charging smart windows with retained performance.

Conclusions:

• The developed transparent zinc-mesh electrode is a key advancement for next-generation transparent electronics.
• ZECDs with transparent anodes offer a promising platform for efficient solar-charging smart windows.
• This technology opens new avenues for transparent batteries and energy-integrated smart devices.