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Electrochromic material and method of manufacturing thereof

An electrochromic material, selected technology, applied in the direction of color-changing fluorescent materials, electrode manufacturing, vapor deposition manufacturing, etc., can solve problems such as long transition time

Pending Publication Date: 2021-04-30
康贝瑞有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, conventional electrochromic materials have a limited lifetime
In addition, conventional electrochromic materials have a long transition time from the colored state to the transparent state and back

Method used

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  • Electrochromic material and method of manufacturing thereof
  • Electrochromic material and method of manufacturing thereof
  • Electrochromic material and method of manufacturing thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] W 0.89 o 2.6 :Al 0.39 :C 0.02 :N 0.01 The positive electrode EC material is composed of three targets of W, Al and graphite in Ar / O 2 / N 2 Atmosphere synthesized by reactive magnetron co-sputtering of PDC onto glass / FTO substrates at room temperature. The thickness of the EC layer is 500–1000 nm. The sputtering pressure is 10mT, the total gas flow is 80sccm, where O 2 6 sccm, N 2 It is 24 sccm. Post annealing was performed at 500°C in air in a muffle furnace. Optical, electrochemical and kinetic switching measurements in liquid batteries. The obtained EC material was dark blue in the colored state, and in PC-LiClO 4 Use LiFePO at 1.0–2.0V in the electrolyte 4 Shows excellent switching times as a counter electrode (approximately 20-60 seconds for both colored and bleached states). The maximum transmittance of the film in the visible range is about 76% in the decolorized state and less than 0.3% in the colored state. in Li + After de-intercalation, there is...

Embodiment 2

[0114] W 0.9 o 2.6 :Cr 0.22 :C 0.12 :N 0.01 The positive electrode EC material is composed of W and Cr targets in Ar / O 2 / N 2 Atmosphere synthesized by reactive magnetron co-sputtering of PDC onto glass / FTO substrates at room temperature. The thickness of the EC layer is 350–1000 nm. The sputtering pressure is 10mT, the total gas flow is 80sccm, where O 2 24sccm, N 2 is 6 sccm. Post annealing was performed at 450°C in air in a muffle furnace. Optical, electrochemical and kinetic switching measurements in liquid batteries. The obtained EC material is graphite gray in the colored state, and in PC-LiClO 4 Use LiFePO at 2.0V in the electrolyte 4 The counter electrode showed excellent switching times (approximately 20-30 seconds for both colored and decolorized states). The maximum transmission in the visible range is about 71% in the decolorized state and less than 4% in the colored state. The sputtered film had a small brown tint (in a bleached state) after post-ann...

Embodiment 3

[0116] W 0.9 o 2.6 :Cr 0.23 :C 0.14 :H 0.01 :N 0.01 The positive electrode EC material is composed of three targets of W, Cr and graphite in Ar / CH 4 / N 2 / O 2 Atmosphere synthesized by reactive magnetron co-sputtering of PDC onto glass / FTO substrates at room temperature. The thickness of the EC layer is 350–1000 nm. The sputtering pressure is 10mT, the total gas flow is 80sccm, where O 2 24sccm, N 2 is 6 sccm. Post annealing was performed at 450°C in air in a muffle furnace. Optical, electrochemical and kinetic switching measurements in liquid batteries. The obtained EC material is almost black in the colored state, and in PC-LiClO 4 Use LiFePO at 2.0V in the electrolyte 4 The counter electrode still showed excellent switching times (about 60 seconds for the colored state and about 90 seconds for the decolorized state). The maximum transmission in the visible range is about 65% in the decolorized state and less than 1% in the colored state. The sputtered film h...

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Abstract

Inorganic electrochromic materials and methods of manufacturing the same utilize a reactive PDC magnetron, wherein the co-sputtering synthesis of electrochromic materials are performed (1) directly from carbide targets; (2) from relevant transition metals and graphite target, as well as non-metal elements such as Si, Ge, P, B, etc.; (3) directly from composite targets (fine powder mixture of transition metals, non-metal elements and graphite powder). Sputtering may be performed instantly from 1 to 4 targets. For co-sputtering, a combination of the following gas mixtures may be used: Ar / O2 / N2, Ar / H2 / N2 / O2, Ar / NH3 / O2, Ar / CO / N2 / O2, Ar / CO / H2 / N2 / O2, Ar / CH4 / N2 / O2 and Ar / NH3 / CO / N2 / O2, which allows to obtain the electrochromic materials with increased electronic and ionic conductivity, higher coloration and good cycling (lifetime). Moreover, different tints of blue as well as gray, black and brown colors neutral to the eye may be obtained. Sputtered electrochromic films were additionally improved by thermo-splitting pre-intercalated thin films, which allows achieving higher coloring and bleaching speed and better lifetime.

Description

technical field [0001] The invention relates to the field of electrochromism, in particular to an electrochromic (EC) material neutral to eye color and a manufacturing method thereof. More specifically, the present invention relates to the field of inorganic EC materials with advanced properties and their fabrication techniques aimed at obtaining optimal material structures. Such materials have an extended color range (blue, gray, black, brown shades) and high conductivity, which allows the deposition of thicker EC layers (up to 10 μm) without significant degradation in their performance. In addition, these materials are expected to be used as cathode materials in primary or secondary energy sources. Background technique [0002] In the past few decades, tungsten oxide (WO 3 ) have been extensively studied due to their interesting physical and chemical properties. WO 3 exhibits robust and reversible field-assisted ion intercalation behavior. such as Li + 、Na + 、K + P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G41/02G02F1/1524
CPCG02F1/1524C23C14/352C23C14/0036C23C14/083Y02E60/10C23C14/0057C23C14/081C01G41/02C01P2002/52C01P2006/40C01P2006/60C09K9/00C23C14/0605C23C14/0635C23C14/14H01G11/46H01M4/0426H01M4/133H01M4/134
Inventor 弗拉基米尔·伊戈列维奇·什切里亚科夫安东·米哈伊洛维奇·马纳霍夫尼古拉·安纳托利维奇·波哥列罗夫弗拉基米尔·亚历山德罗维奇·楚格诺夫
Owner 康贝瑞有限公司