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Method for improving cycling stability of prussian-blue electrochromic film in LiClO4/PC electrolyte

A cycle stability, electrochromic technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of cycle stability, poor durability, poor cycle stability, can not meet the application and other problems, achieve long life, transmittance Stable, good cycle stability

Active Publication Date: 2018-05-04
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the researchers wanted to apply it in electrochromic devices, they found that Prussian blue in LiClO 4 The cycle stability in / PC electrolyte is poor, and its cycle life is only about 100 cycles, which obviously cannot meet the practical application
Prussian blue in LiClO 4 Poor cycle stability and durability in / PC electrolytes have become urgent problems to be solved

Method used

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  • Method for improving cycling stability of prussian-blue electrochromic film in LiClO4/PC electrolyte
  • Method for improving cycling stability of prussian-blue electrochromic film in LiClO4/PC electrolyte

Examples

Experimental program
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Embodiment 1

[0012] (1) Prepare the PB precursor solution required for electrodeposition: mix 0.05mM K 3 Fe(CN) 6 , 0.05mM FeCl 3 . Dissolve 0.1M KCl in deionized water, stir magnetically for 5 minutes, adjust the pH to 2.0 with concentrated hydrochloric acid, and stir magnetically for 5 minutes.

[0013] (2) ITO conductive glass needs to be cleaned by acetone, ethanol and deionized water in sequence before use, and the glass should be wiped dry after cleaning. Use a potentiostat for coating, in constant current mode, use a three-electrode system for electrodeposition, ITO conductive glass to connect the working electrode, use platinum as the counter electrode, and Ag / KCl electrode as the reference electrode, at a current density of 10μA / cm 2 The electrodeposition time under the condition is 15min. The working electrode and the counter electrode are arranged in parallel and symmetrically.

[0014] (3) Rinse the deposited film with deionized water and place it in air at room temperatu...

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Abstract

The invention discloses a method for improving the cycling stability of a prussian-blue electrochromic film in a LiClO4 / PC electrolyte, and belongs to the field of function-material technology application. Weak acid (acetic acid, oleic acid, oxalic acid and the like can be selected) is dropped into the configured LiClO4 / PC electrolyte, the prussian-blue electrochromic film is put into the electrolyte and subjected to electrochromism. The cycling stability can be improved, and the service life is prolonged.

Description

technical field [0001] The present invention relates to how to improve the Prussian blue film in LiClO 4 The method for the cycle life of / PC electrolyte belongs to the technical application field of functional materials. Background technique [0002] At present, in China, which is constantly promoting urbanization, the energy consumption of buildings accounts for about 28% of the total energy consumption of the society. Windows are the main way of building energy consumption, and about 30% to 50% of energy is lost through windows. At the same time, energy and Environmental issues are also increasingly prominent, and it is imperative to reduce energy consumption. As a new type of functional material, electrochromic materials can undergo reversible color changes under a certain applied voltage, and have been widely used in aircraft hanging windows, smart windows, car rearview mirrors, national defense and military camouflage and other fields. Electrochromic materials refer ...

Claims

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Application Information

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IPC IPC(8): G02F1/15
CPCG02F1/15G02F2001/1517
Inventor 严辉李梓同周开岭汪浩刘晶冰
Owner BEIJING UNIV OF TECH
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