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Electrochemical cells are systems that convert chemical energy into electrical energy or use electrical energy to drive chemical reactions. They consist of two electrodes in contact with an electrolyte, where redox reactions enable electron transfer. Most electrochemical cells include two half-cells connected by an external wire for electron flow and a salt bridge for ion flow. The salt bridge contains an electrolyte solution and maintains charge neutrality by allowing ions—not...
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In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
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Updated: Apr 12, 2026

Ultrathin Porated Elastic Hydrogels As a Biomimetic Basement Membrane for Dual Cell Culture
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Dual-Salt Hydrogel Electrolyte for a Robust Zn-Ion Electrochromic Device toward Dynamic Infrared Regulation.

Ke Wang1,2,3, Xiaoting Yang3, Dongdong Yan4

  • 1School of Microelectronics, Tianjin University, Tianjin 300072, China.

ACS Applied Materials & Interfaces
|April 10, 2026
PubMed
Summary

This study introduces a simplified electrochromic device for dynamic infrared camouflage. The new design offers improved stability and faster response times for thermal management applications.

Keywords:
Zn-ion dual-saltdynamic regulationelectrochromic deviceshydrogel electrolyteinfrared camouflage

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Optics

Background:

  • Advancing infrared detection necessitates dynamic infrared camouflage for next-generation applications.
  • Current electrochromic technology faces limitations including complex structures, single zinc-ion electrolytes, poor stability, and slow response times.

Purpose of the Study:

  • To develop a simplified and efficient electrochromic device for dynamic infrared camouflage.
  • To overcome the limitations of existing electrochromic technologies for thermal management.

Main Methods:

  • A synergistic strategy involving structural simplification and dual zinc-salt blending was employed.
  • A bifunctional electrode integrating ion storage and counter electrode was created, forming a four-layer quasi-sandwich structure.
  • A dual-salt hydrogel electrolyte using zinc sulfate (ZSO) and zinc perchlorate (ZClO) was constructed.

Main Results:

  • The developed device achieved an infrared emissivity regulation range (Δε) greater than 0.3.
  • Performance retention exceeded 80% after 1000 cycles, demonstrating enhanced stability.
  • Rapid coloration and bleaching times of 6.9 s and 10.5 s, respectively, were recorded.

Conclusions:

  • This work presents a novel paradigm for practical electrochromic devices for dynamic infrared camouflage.
  • The findings offer valuable insights for addressing common bottlenecks in electrochemical device development.
  • The simplified structure and dual-salt electrolyte significantly improve performance and stability.