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Related Concept Videos

Electrochemical Systems01:24

Electrochemical Systems

Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution, the Zn metal, composed...
Types of Reversible Electrodes01:24

Types of Reversible Electrodes

For electrode reversibility to be maintained, all the reactants and products involved in the half-reaction must be present at the electrode. There are several types of reversible electrodes (half-cells).In metal-metal-ion electrodes, a metal balances electrochemically with a solution of its own ions. Examples are Cu2+|Cu and Zn2+|Zn. Metals that react with the solvent, like group 1 and most group 2 metals, which react with water, and zinc, which reacts with aqueous acidic solutions, cannot be...
Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at the...
Theory of Strong Electrolytes01:23

Theory of Strong Electrolytes

The interionic forces of the strong electrolytes depend on the solvent's dielectric constant, which is the ability of a solvent to store electrical energy, based on its polarizability. and the solution's concentration. In high-dielectric solvents and in dilute solutions, weak electrostatic forces keep ions apart. However, in low-dielectric solvents or concentrated solutions, stronger interionic forces may cause ions to pair up as ionic doublets despite being fully ionized. The theory of strong...
The Electrical Double Layer01:30

The Electrical Double Layer

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...
Electrolysis03:00

Electrolysis

In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...

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An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
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An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

Published on: February 27, 2019

All-solid-state electrochromic devices based on ultra-thin Li3PO4 electrolyte.

Jiuyong Li1,2, Weiming Liu1,2, Youxiu Wei1,2

  • 1Baimtec Material Co., Ltd, Beijing, 100095, China.

Chemical Communications (Cambridge, England)
|June 16, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed an ultrathin lithium phosphate electrolyte for solid-state electrochromic devices. This innovation offers improved performance, including faster switching speeds and enhanced stability for smart window applications.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Solid-State Devices

Background:

  • Electrochromic devices offer tunable light transmission but face challenges with electrolyte stability and performance.
  • Developing efficient solid-state electrolytes is crucial for next-generation electrochromic technologies.

Purpose of the Study:

  • To investigate the performance of an ultrathin lithium phosphate (Li3PO4) electrolyte in all-solid-state electrochromic devices.
  • To demonstrate the potential of Li3PO4 as a viable electrolyte for advanced electrochromic applications.

Main Methods:

  • Fabrication of an ultrathin Li3PO4 electrolyte layer (approximately 12 nm).
  • Integration of the Li3PO4 electrolyte into all-solid-state electrochromic device architectures.
  • Characterization of device performance, including optical modulation, coloration/bleaching times, and cycling stability.

Main Results:

  • Achieved a large optical modulation of 69.5%.
  • Demonstrated fast coloration and bleaching times of 9.7 seconds and 2.5 seconds, respectively.
  • Exhibited excellent cycling stability, indicating durability.

Conclusions:

  • The ultrathin Li3PO4 electrolyte shows significant promise for enhancing electrochromic device performance.
  • Its electron-blocking properties and short ion transport path address key challenges in electrolyte design.
  • This work presents a promising strategy for developing efficient and stable solid-state electrochromic devices.