Electrochromic device using organic/metal hybrid polymer and method for producing same
A technology of electrochromic devices and electrochromic layers, applied in instruments, nonlinear optics, optics, etc., to achieve the effects of inhibiting electrode surface degradation and stabilizing cycle characteristics
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[0163] [Material]
[0164] The materials used are illustrated by the following examples. In addition, all materials are special grade reagents and can be used without purification. Poly(methyl methacrylate) (PMMA, weight-average molecular weight=350kg / mol) and indium tin oxide (ITO) coated glass substrates (hereinafter referred to as ITO substrates) were purchased from Sigma-Aldrich Co.LLC. Resistor Rate=8~12Ω / cm 2 ).
[0165] Methanol (MeOH), acetonitrile (ACN) and 1-butyl-1-methylpyrrolidine bis(trifluoromethanesulfonyl)imide (hereinafter abbreviated as BMP-TFSI) were purchased from Wako Pure Chemical Industries, Ltd.
[0166] Lithium perchlorate (LiClO) was purchased from Kanto Chemical Co., Ltd. 4 ).
[0167] Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) was purchased from Sigma-Aldrich Co. LLC.
[0168] As the organic / metal hybrid polymer, a polymer material represented by formula (A) was used. Refer to Patent Document 1 or J.Am.Chem.Soc., 200...
example 1
[0172] In Example 1, an electrochromic device was fabricated, which used an ITO substrate as the first electrode 110, polyFe as the electrochromic layer 120, containing BMP-TFSI and LiClO 4 The electrolyte material of PMMA is used as the electrolyte layer 130 , PEDOT:PSS is used as the counter electrode material layer 140 , and the ITO substrate is used as the second electrode 150 .
[0173] This device is described in detail. As the first electrode 110 ( figure 1 ) on the ITO substrate, add polyFe as an organic / metal hybrid polymer to form an electrochromic layer 120 ( figure 1 )( figure 2 step S210). A polyFe-containing solution was prepared by dissolving polyFe (4 mg) in MeOH (1 mL) and filtering through a syringe filter (polyvinylidene fluoride (PVDF), 0.45 μm) to remove insoluble residue. The resulting polyFe-containing solution (4 mL) was added on an ITO substrate (2.5×2.5 cm) by spray coating.
[0174] Electrochromic layer 120 ( figure 1 ) surface treatment ( f...
example 2
[0183] In Example 2, an electrochromic device was manufactured in the same manner as in Example 1 except that the counter electrode substance layer 140 was not provided. Regarding the electrochromic device of Example 2, electrochromic characteristics (transmittance change, fading / coloring time, contrast, stability of repeated driving, etc.) were examined when redox was repeated 600 times at room temperature. The result is as image 3 And as shown in Table 3.
[0184] After the characteristic evaluation, the electrochromic device of Example 2 was disassembled, the electrolyte layer was wiped off, and the deterioration of the surface of the first electrode 110 and the second electrode 150 on the counter electrode side was visually observed. The result is as Figure 5 shown.
[0185] Next, the composition and bonding state of the surfaces of the first electrode 110 and the second electrode 150 were inspected. The surface of each electrode was subjected to surface analysis usi...
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