• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    ELECTROCHROMIC DEVICE, containing a film of stable elec- tric; of the rochromic compound in ion-conducting contact with the polymer electrolyte film, both layers being arranged by a membrane with two electrode layers of opposite polarity, distinguishing it with. By the fact that, in order to increase service life, stability of characteristics and speed, the polymer electrolyte film in it is a copolymer of 2-acrylamido-2-methyl propane sulfonic acid and vinyl sulfonic acid. WITH
    公开号:SU1126212A3
    申请号:SU813351020
    申请日:1981-10-20
    公开日:1984-11-23
    发明作者:И.Хуанг Сун；Доменико Джиглия Роберт
    申请人:Американ Цианамид Компани (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to information display devices and operates on the effect of stable electrochromism.
    An electrochromic light-modulating device is known, in which a water solution of polyethylene sulfonic acid is used as an ion-conductive material with a concentration that provides m-elastic consistency.
    The disadvantage of the device is a small service life.
    The closest technical solution to the invention is an electrochromic device containing a film of a stable electrochromic compound in ion-conducting contact with a polymer electrolyte film, both layers being located between two electrode layers of opposite polarity.
    The polymer electrochromic film in this device is a copolymer of an acrylate or methacrylate comonomer with a comonomer containing an acidic group, such as the comonomer 2 acrylamido-2-methylpropanesulfonoric acid, the latter being sufficient to make the material hydrophilic 2j.
    The disadvantages of the known device is a short service life, insufficient stability of the characteristics and low speed.
    The aim of the invention is to increase the service life, stability of performance and speed.
    The goal is achieved by the fact that in an electrochromic device containing a film of a stable electrochromic compound, which is in ion-conducting contact with a polymer electrolyte film, and both layers are located between two electrode layers, the polymer electrolyte film is a copolymer of 2-acyrate amide-2 -methylpropanesulfonic acid (AMPS) and vinylsulfonic acid (century) 4
    All other things being equal, the speed of switching in an electrochromic device containing a polymer electrolyte is inversely proportional to the equivalent weight (EV) of the polymer electrolyte. EV is the molecular weight attributed to the acid group of a given polymer. Polymer electrolytes with lower EVs had higher conductivity, but, unfortunately, polymer electrolytes that have lower EVs usually have a. Electrochrome devices have worse stability, which reduces the service life of the device. The use of polystyrenesulfonic acid (EV 184) and VSK homopolymer (EV 108) results in very high switching rates in electrochromic devices, but a decrease in cycle time is accompanied by destruction of the polymer or other components that come into contact with the polymer in the electrochromic device. The destruction of some VSK homopolymers appears as a brown color on the layer in the instrument, which disappears.
    The use of the AMPS homopolymer in the electrochromic device (EV 207) leads to excellent stability and moderately good switching speed with careful control over the water content in the polymer layer of the device. A significant increase in efficacy was found with the use of copolymers VSK and AMPS
    When the molar ratio of the corresponding links is 1: 1 EV-157. This copolymer shows a proportional increase in switching speed in comparison with the homopolymer AMPS, and the stability of the copolymer E is less sensitive to water content than the stability of the homopolymer. Operation at 50 ° C is significantly improved. The switching speed is increased, and the operation time is increased.
    Example 1. Obtaining a copolymer. In a reaction flask containing 74 g of distilled and degassed water, 10 g of 2-acrylamido-2-methylpropanesulfonic acid are added; and 17.15 g of a 40% aqueous solution of sodium vinyl sulfonic acid. Before mixing, the sodium sulfonate solution is purified by passing through a column of activated carbon. Nitrogen was passed through the reaction mixture, heated to 65 ° C and 0.20 g of catalyst (peroxide succinic acid) was added to it. The reaction mixture is held under these conditions for 18 hours. At the end, the mixture with the product is cooled to and a small portion of the mixture is poured onto a glass plate. The dry film is very transparent, which indicates full polymerization. In addition, the analysis of unsaturated groups shows that the content of residual monomer is less than 0.16% of the total weight. IR spectrophotometric analysis shows that 50 mol.% Of copolymerized monomer units contain an amide group. 20 g of a sample of the mixture of the reaction product is diluted by adding 80 g of distilled water. The diluted solution is passed through a column containing Amberlite 1R-120 mono exchange resin. The copolymer solution is dried and stored in a sealed container.
    Example 2. Obtaining a copolymer. A 40% aqueous solution weighing 185 g, containing 0.57 mol of sodium vinyl sulfonic acid salt is passed through a long (60 cm) column packed with activated carbon with a particle size of 20x50 mesh 185 g of a 40% aqueous solution of HSC sodium salt added along with 118 g (0.57 mol) of AMPS monomer and 114 g of distilled and degassed water in a three-neck reaction flask equipped with a mechanical stirrer and nitrogen flow. Then 0.95 g of peroxide succinic acid is added. And the reaction mixture is kept at 16 ° C. The reaction mixture is cooled before and diluted with water. until a 4 wt.% solution is obtained. The diluted mixture with the product is dialyzed for three days using a Spectrophore dialysis membrane that separates the molecular weight from 3500. The copolymer solution is then passed through a column filled with Amberlit I-120 (ion exchange resin) to convert the salt to the acid, and finally the copolymer is freeze-dried.
    Example 3. Electrochromic device. A mixture of polymeric electrolyte for irrigation is obtained by adding 13 ml of distilled water, 1 g of TiOj (pigment), 0.025 g of silicone surfactant compound (Union Carbide L-5340), and 9 g of lyophilized VSC-AMPS copolymer obtained in Example 1 and grinding within 24 hours
    An electrochromic film on an electrode is produced by spraying an amorphous tungsten oxide film on a glass substrate coated with conductive SifiOj (commercially available as glass).
    Tungsten oxide is applied to an ESA glass in the form of a seven-petal shape 8.5 mm high and 1500 A thick. The Mylar ring 0.35 mm thick is glued to N E5A glass with epoxy adhesive, thus obtaining a cavity around the electrochromic image. The polymer mixture for irrigation is placed inside to fill the cavity. The polymer mixture is dried under dry gaseous nitrogen to form a solid film. The film is moistened at 25 ° C in nitrogen, at a relative humidity (ON) of 45%. The second electrode consists of a carbon-paper structure, it is squeezed between the polymer layer and the other H ESA plate. The two WE5A plates are then sealed along the edges with epoxy cement.
    The assembled electrochromic apparatus was tested at 50 ° C by applying electrical pulses having a voltage of approximately 1.0 V and DC at first c. a positive paper counter electrode and a negative electrochromic electrode; a current of 320 mA is passed for 0.9 s. Tungsten oxide gives a blue image on the blender. To erase the image, the polarity is changed and a current of 340 mA is passed for 0.9 s. Two such devices were cyclically tested (color and its disappearance) for a period of 7x10 cycles without damage.
    Example 4. Electrochromic device. An electrochromic device is prepared as described in Example 3, except that some other polymer electrolytes are used. The device is tested on a continuous cyclic apparatus to limit the retention of the switching cycle and the relative switching speed. Polymer electrolytes are used, their equivalent weights and test results are presented in the table.
    VSK-AMPS copolymer has a slower switching speed than
    VSK homopolymers, however, it has a greater number of switching cycles and has a higher switching speed, but fewer switching cycles than the AMPS homopolymer. In most existing options
    In practical application of electrochromic devices, the copolymer VSK-AMPS is preferable due to the combination in a high switching speed while maintaining a large number of switching cycles.
    Polymer electrolyte
    VSK homopolymer AMPS homopolymer
    VSK-AMPS / polymer (1: 1 mol)
    Relative switching speed
    1.9 1.0
    1.3
    权利要求:
    Claims (1)
    [1]
    ELECTROCHROMIC DEVICE containing a film of a stable electrochromic compound in ion-conducting contact with a polymer electrolyte film, both layers being located between two electrode layers of opposite polarity, which is different from i. in that, in order to increase the service life, stability of characteristics and speed, the polymer electrolyte film in it is a copolymer of 2-acrylamido-2-methylpropanesulfonic acid and vinyl sulfonic acid.
    SB from th .25
    1 1126212
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2453883C2|2006-12-18|2012-06-20|Сэн-Гобэн Гласс Франс|Electrolyte material of electro-driven device, method of material production, electro-driven device containing electrolyte material and method of device manufacture|CH573155A5|1974-06-12|1976-02-27|Bbc Brown Boveri & Cie|
    AU1342576A|1975-09-24|1977-11-03|Timex Corp|Electrochromic display|
    CH594263A5|1975-11-29|1977-12-30|Ebauches Sa|
    CH604195A5|1976-09-14|1978-08-31|Ebauches Sa|
    US4116545A|1976-10-27|1978-09-26|American Cyanamid Company|Polymeric electrolyte for electrochromic display devices|
    US4215917A|1976-10-27|1980-08-05|American Cyanamid Company|Ion exchange-electrolyte layer for electrochromic devices|
    US4120568A|1977-01-12|1978-10-17|Optel Corporation|Electrochromic cell with protective overcoat layer|
    US4174152A|1978-02-13|1979-11-13|American Cyanamid Company|Electrochromic devices with polymeric electrolytes|
    US4335938A|1979-08-30|1982-06-22|American Cyanamid Company|Electrochromic cells with improved electrolyte system|US4519930A|1982-01-11|1985-05-28|Kabushiki Kaisha Daini Seikosha|Electrochromic display device|
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    EP0229438A1|1986-01-17|1987-07-22|The Signal Companies Inc.|Electrochromic devices using solid electrolytes|
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    US4768865A|1987-06-10|1988-09-06|Ppg Industries, Inc.|Electrochromic window with metal grid counter electrode|
    US5066111A|1989-09-13|1991-11-19|Ppg Industries, Inc.|Electrochromic window with integrated bus bars|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US06/199,892|US4361385A|1980-10-23|1980-10-23|Electrochromic device containing acid copolymer electrolyte|
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