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Conductive particle, visible light transmissive particle dispersed conductor, method for producing same, transparent conductive thin film, method for producing same, transparent conductive article usi

A technology of conductive particles and transparent conductive film, which is applied in the field of infrared shielding objects made from particle dispersions of external shielding materials for manufacturing, and can solve problems such as inspection of transparent conductivity.

Active Publication Date: 2007-08-22
SUMITOMO METAL MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this alkali metal tungstate is considered to be a solid material used as an electrode catalyst material for fuel cells, etc., but no investigation has been made on transparent conductivity.

Method used

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  • Conductive particle, visible light transmissive particle dispersed conductor, method for producing same, transparent conductive thin film, method for producing same, transparent conductive article usi
  • Conductive particle, visible light transmissive particle dispersed conductor, method for producing same, transparent conductive thin film, method for producing same, transparent conductive article usi
  • Conductive particle, visible light transmissive particle dispersed conductor, method for producing same, transparent conductive thin film, method for producing same, transparent conductive article usi

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0345] Tungsten hexachloride was dissolved in ethanol and dried at 130°C to produce tungsten oxide hydrate. It was heated at 550°C for 1 hour in a reducing gas atmosphere (argon / hydrogen=95 / 5 volume ratio), returned to room temperature once, and then heated at 800°C for 1 hour in an argon atmosphere to produce the target tungsten oxide powder.

[0346] As a result of identifying the crystalline phase by X-ray diffraction, the obtained powder was W 18 o 49 (WO 2.72 ) of the so-called Magnelli phase. The result of observing the shape of the powder by SEM is shown in Fig. 4(A) and (B). Among them, (A) is W 18 o 49 The 10,000-fold SEM image of (B) is the 3,000-fold SEM image.

[0347] Then, as shown in Fig. 4(A) and (B), needle-shaped crystals were observed. In addition, the powder had a powder resistance value of 0.085 Ω·cm measured under a pressure of 9.8 MPa, confirming good electrical conductivity.

[0348] Mix 20 parts by weight of the WO 2.72 Powder of conductive pa...

Embodiment 2

[0351] The ammonium metatungstate aqueous solution was dried at 130° C. to obtain a powdery tungsten oxide compound. This was heated at 550° C. for 1 hour in a reducing atmosphere (argon / hydrogen=97 / 3 volume ratio), returned to room temperature once, and then heated at 800° C. for 1 hour in an argon atmosphere to produce tungsten oxide powder. As a result of identifying the crystalline phase by X-ray diffraction, it was observed that W 18 o 49 (WO 2.72) crystal phase. Thus, even if ammonium metatungstate aqueous solution is used for a tungsten compound starting material, the electroconductive particle equivalent to Example 1 can be produced. The powder resistance value measured under the pressure of 9.8 MPa of this electroconductive particle powder was 0.089 Ω·cm, and it was confirmed that favorable electroconductivity was obtained.

Embodiment 3

[0353] Cesium carbonate and tungstic acid were mixed in a mortar so that the molar ratio of Cs / W was 0.33. This was heated at 600° C. for 2 hours in a reducing gas atmosphere (argon / hydrogen=97 / 3 volume ratio). Then, after returning to room temperature once, heating in an argon atmosphere at 800°C for 1 hour, thereby producing Cs 0.33 WO 3 powder of conductive particles. The results of identification of the crystalline phase by X-ray diffraction, Cs 0.33 WO 3 It is a hexagonal tungstate alkali metal salt. The result of observing the shape of the powder of the obtained conductive particles by SEM is shown in FIG. 5 . Among them, Figure 5 is Cs 0.33 WO 3 10,000x SEM images of the.

[0354] Then, as shown in Fig. 5, crystals of hexagonal prisms were observed. The powder of the conductive particles had a powder resistance value measured at a pressure of 9.8 MPa of 0.013 Ω·cm, confirming good conductivity.

[0355] Mix 20 parts by weight of the Cs 0.33 WO 3 Powder of co...

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Abstract

Disclosed is a visible light transmissive particle dispersed conductor using conductive particles containing a tungsten oxide or / and a composite tungsten oxide. Also disclosed are a visible light transmissive conductive article made of such a visible light transmissive particle dispersed conductor, conductive particles used for such a visible light transmissive particle dispersed conductor and visible light transmissive conductive article, and a method for producing such conductive particles. For providing a visible light transmissive particle dispersed conductor having excellent visible light transmittance and excellent conductivity at low cost, there are used conductive particles containing a tungsten oxide represented by the general formula: WyOz (wherein 2.2 = z / y = 2.999) or / and a composite tungsten oxide represented by the general formula: MxWyOx (wherein 0.001 <= x / y <= 1.1 and 2.2 <= z / y <= 3.0) and having a particle diameter of not less than 1 nm, visible light transmissivity, and a powder resistivity measured at a pressure of 9.8 MPa of not more than 1.0 O.cm.

Description

technical field [0001] The present invention relates to a particle dispersion of an infrared shielding material. The particle dispersion of an infrared shielding material is a dispersion obtained by dispersing particles of an infrared shielding material in a medium. , and the complex oxide particles that absorb light in the near-infrared region, and the infrared shielding material manufactured using the infrared shielding material particle dispersion, and the infrared shielding material particles used in the infrared shielding material particle dispersion. A method for producing shielding material particles, and infrared shielding material particles produced by the method for producing infrared shielding material particles; [0002] In addition, it relates to a visible light-transmitting particle-dispersed conductor using conductive particles containing tungsten oxide and / or composite tungsten oxide as the composite oxide fine particles, and a visible-light-transmitting partic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/14H01B13/00C01G39/00C01G41/00C03C17/25
Inventor 武田广充足立健治
Owner SUMITOMO METAL MINING CO LTD
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