155 results about "Electrochromic devices" patented technology

This disclosure provides compositions of electrochromic dyes, functionalized electrochromic dyes and dye macromers which may be incorporated into electrochromic devices with tailored optical properties. The disclosure provides an electrochromic dye with an attached functionalization group wherein the said dye colors by at least one of oxidation and reduction and contains at least two moieties wherein a first moiety is electrochromic and a second moiety is an electrochromic moiety, an electron donating moiety, or an electron receiving moiety and wherein the functionalization group. This disclosure also provides EC compositions and devices for controlling color.

The invention aims at providing an electrochromic device based on ammonium ion aqueous electrolyte and a preparation method and application of the electrochromic device, and belongs to the technical field of electrochromic devices. The transparent conductive glass is composed of a transparent conductive glass substrate layer, an ion storage layer, a hydrogel ion electrolyte layer, an electrochromic layer and a top transparent conductive layer. The electrolyte layer of the electrochromic device based on the ammonium ions adopts the hydrogel ion electrolyte, so that the migration process of the ammonium ions can be effectively promoted, and the long-cycle stability of the electrochromic device based on the ammonium ions is improved. The electrochromic device based on ammonium ions has wide application prospects in the fields of intelligent systems, intelligent windows, intelligent electronic products and the like.

The invention discloses a metal grid transparent conductive film which sequentially comprises a transparent base material layer, a metal grid layer, a transition layer and a protection layer from bottom to top. The manufacturing method comprises the steps of pretreating the transparent base material, preparing the metal seed layer, performing laser direct writing patterning, performing electroplating thickening to form the metal grid layer, preparing the transition layer and the protective layer, and performing performance test and adjustment. The hexagonal honeycomb grid structure and the arc edge design are adopted, and the problem of metal grid electric field concentration is effectively solved; through the arrangement of the transition layer, the interface bonding force of the metal grid is improved; the protection layer and the transition layer cooperate to improve the corrosion resistance of the film; the problems that an existing transparent conductive material is high in cost, poor in flexibility and insufficient in interface compatibility, and an electrochromic device is concentrated in electric field, short in service life and the like are effectively solved, and the transparent conductive material can be widely applied to building intelligent windows, automobile anti-dazzle rearview mirrors, flexible display panels and other electrochromic devices and has important industrial application value.

The application discloses a physical vapor deposition device, an electrochromic device and a preparation method thereof, and relates to the technical field of electrochromic devices. The preparation method comprises the following steps: sputtering and depositing an electrochromic layer of WO3 on the surface of a first ITO layer, and the oxygen content is any value in the range of 42.5% to 52.5%; sputtering and depositing a pre-set thickness of a tungsten oxide ion conduction layer on the electrochromic layer, and the oxygen content of the corresponding chamber is any value in the range of 35% to 45%; sputtering and depositing an ion storage layer containing lithium ions on the ion conduction layer; depositing a second ITO layer on the ion storage layer, and obtaining the electrochromic device after vacuum annealing treatment and cooling treatment; wherein the deposition temperature of the second ITO layer is any value in the range of 350 DEG C to 400 DEG C, and the annealing temperature of the vacuum annealing treatment is any value in the range of 450 DEG C to 500 DEG C. The electrochromic device prepared by the application has the characteristics of high transmittance and low sheet resistance.

This application provides a color-tuning driving device and control method for an electrochromic device. A microprocessor receives control signals from a host computer, allowing the color-tuning of the electrochromic device to be programmed via the host computer to control the expected voltage waveform. This effectively solves the problem of color-tuning control stability in electrochromic devices. After receiving the control signal from the host computer, the microprocessor outputs a voltage waveform signal and a duty cycle signal. The voltage waveform signal is amplified by a power amplifier unit and then turned on by a controllable switch unit, serving as the driving voltage for the electrochromic device's color change. The duty cycle signal is input to the gate driving unit, which controls the on-time and off-time of the controllable switch unit based on the duty cycle signal, thereby controlling the on and off-time of the driving voltage of the electrochromic device. This eliminates the need for manual switching of the driving voltage, improving the stability and efficiency of color-tuning in electrochromic devices.

The invention relates to a viologen derivative electrolyte solution with an electrochromic characteristic and a preparation method and application thereof. The electrolyte solution comprises a viologen derivative and ascorbic acid, the viologen derivative is selected from 1-butyl-4, 4 '-dipyridyl or 1-butyl-1'-(2-propenyl)-4, 4 '-dipyridyl, and the viologen derivative is selected from 1-butyl-4, 4'-dipyridyl or 1-butyl-1 '-( The obtained electrolyte solution can be used for preparing an electrochromic device. Compared with the prior art, the obtained electrochromic device based on the viologen derivative electrolyte can realize color conversion from colorless or brown to purple black under relatively small voltage, and has relatively large light modulation amplitude and relatively high response speed.

The invention discloses physical vapor deposition equipment, an electrochromic device and a preparation method of the electrochromic device, and relates to the technical field of electrochromic devices. The preparation method comprises the following steps: sputtering and depositing the WO3 electrochromic layer on the surface of the first ITO layer, wherein the oxygen content is any one of 42.5-52.5%; sputtering and depositing a tungsten oxide ion conducting layer with a preset thickness on the electrochromic layer, wherein the oxygen content of the corresponding chamber is any one of 35%-45%; sputtering and depositing an ion storage layer containing lithium ions on the ion conduction layer; a second ITO layer is deposited on the ion storage layer, and the electrochromic device is prepared after vacuum annealing treatment and cooling treatment; wherein the deposition temperature of the second ITO layer is any one value from 350 DEG C to 400 DEG C, and the annealing temperature of the vacuum annealing treatment is any one value from 450 DEG C to 500 DEG C. The electrochromic device prepared by the invention has the characteristics of high transmittance and low sheet resistance.

The invention belongs to the technical field of electrochromic devices, and particularly relates to a silicon dioxide gel integrated electrochromic device and a preparation method thereof. The integrated electrochromic device is of a three-layer structure which is a transparent conductive substrate, color-changing gel and a transparent conductive substrate. The color-changing gel is composite gel of silicon dioxide gel and a metal oxygen cluster material, proper redox equilibrium species and ionic liquid are added, and an integrated electrochromic device with high optical contrast and ultra-long cycle stability is obtained.

The invention provides a solid electrolyte, a preparation method thereof and an electrochromic device, and belongs to the technical field of electrochromic devices. Vanadium-based oxide is added as a catalyst, and a mixed solution of a cross-linking agent containing carbon-carbon double bonds, an electrolyte salt, an ionic liquid, a curing agent, a first solvent and a second solvent is thermally cured to prepare the solid electrolyte. The curing agent is at least one of an amine curing agent, an anhydride curing agent or a thiol curing agent. The solid electrolyte obtained by thermocuring has the characteristics of high transparency, good flexibility and high stripping force, can form a film with the thickness of less than 100 microns, and is suitable for preparing a flexible electrochromic device; the electrochromic device prepared from the solid electrolyte is relatively good in cyclic aging stability.

The present disclosure describes electrochromic devices comprising transparent conductive layer acting as an electrode, an active electrochromic film, an ion conductor, and an ion storage film at least one of which comprises at least one MXene material.

The application discloses a display device and a manufacturing method thereof. The display device comprises a first substrate and a second substrate arranged oppositely and an electrochromic device between the first substrate and the second substrate. The electrolyte layer of the electrochromic device is formed by curing a pre-solution. The pre-solution comprises, in terms of mass parts, 8-20 parts of a polymer, 29-44 parts of a cross-linking agent, 29-44 parts of a solvent, 0.145-0.22 parts of an initiator and 4-22 parts of a lithium salt and deionized water. In the process of forming the electrolyte layer of the electrochromic device by using the pre-solution, the pre-solution is cured and formed after printing. In the printing process, a barrier wall does not need to be arranged to block adjacent two electrochromic devices, so that the manufacturing process of the pixelated arrangement electrochromic device is greatly simplified, and the manufacturing cost and difficulty of the display device are reduced.

Various embodiments herein relate to electrochromic devices and electrochromic device precursors, as well as methods and apparatus for fabricating such electrochromic devices and electrochromic device precursors. In certain embodiments, the electrochromic device or precursor may include one or more particular materials such as a particular electrochromic material and / or a particular counter electrode material. In various implementations, the electrochromic material includes tungsten molybdenum oxide. In these or other implementation, the counter electrode material may include nickel tungsten oxide, nickel tungsten tantalum oxide, nickel tungsten niobium oxide, nickel tungsten tin oxide, or another material.

This disclosure relates generally to solution processed low temperature metal oxide, metal bronze or polyoxometalate materials as charge storage material used in electrochromic devices, charge storage material and electrochromic devices comprising the materials and methods of making and using the same.

The invention relates to the field of organic electrochromic materials, in particular to a transparent conductive material, a preparation method and application. According to the transparent conductive material, two independent carbonyl groups are introduced into a molecular main chain at the same time, accurate synergy of energy level, polarity and charge transfer performance is achieved through differential regulation and control of oxygen or nitrogen atoms, the polymer can be used as an ion storage layer, an electrode modification layer or an active functional layer in an electrochromic device, and the electrochromic device has a wide application prospect. The material can realize rapid and reversible optical modulation under a low voltage (+ / -1.0 V), has high optical contrast ([delta] T550gt, 65%), short response time (lt, 2s) and excellent cycle stability (more than 3 * 104 cycle retention rate gt, 95%), and has wide application prospects in the fields of intelligent display, energy-saving buildings and flexible electronics.

The invention discloses a method for preparing a porous nickel tungsten oxide film based on a vapor deposition method. The method comprises the following steps: converting a reactant precursor and a substrate heating precursor into precursor gas; introducing deposition gas to carry out plasma-assisted gas phase reaction deposition on the substrate; selective etching gas and auxiliary gas are introduced for etching and circulation; and carrying out annealing treatment under a protective atmosphere. The invention also discloses the porous nickel tungsten oxide film prepared by the method, an ion storage device and an electrochromic device. According to the method, PECVD equipment is adopted, fluorine ions are utilized to selectively etch tungsten oxide, different reaction gases are alternately introduced to realize alternation of film deposition and etching under the assistance of plasma, the porous and loose Ni-W-O film is prepared, and the requirements of rapid intercalation and deintercalation of lithium ions are met. The preparation of the inorganic porous anode material with high structural stability and rapid circulating discoloration capability is realized in one set of equipment, and a new method is provided for efficient production of large-size inorganic all-solid-state electrochromic devices.

Electrochromic devices having buffer layer(s) promoting electron transfer between the second transparent electrode and second electrochromic layer while concurrently reducing or inhibiting deleterious chemical interaction between the second electrochromic layer and the second electrode and / or maintaining the conductive state of the second electrode while the device changes from a low transparency of approximately 10-20% transmittance in the visible region to a high transparency of approximately 75% to 95% transmittance with at least a 70% difference in transmittance between the low and high transmittance states and promotes longevity of the device. In certain aspects, the electrochromic devices change from a low transparency state having a gray color to a high transparency state that is substantially colorless within 20 seconds of applying the selective electrical potential to the electrochromic device. The electrochromic device is operated by electrically holding and controlling electrons going into the electrochromic device so a surface reflectivity level varies.

The invention relates to a preparation method of a gel electrolyte, in particular to a preparation method of a high-ionic-conductivity gel electrolyte for an electrochromic device. The invention aims to solve the problems of low ionic conductivity and poor low temperature resistance of the ionic gel electrolyte prepared by the existing method. The method comprises the following steps: 1, preparing an ionic liquid solution of electrolyte salt; 2, ethyoxyl ethyoxyl ethyl acrylate, 1-vinyl-3-ethylimidazole bis (trifluoromethanesulfonyl) imide salt and an initiator are added into the ionic liquid solution of the electrolyte salt; and 3, curing. According to the invention, cluster dissociation of an electrolyte salt and anions thereof is promoted through polyacrylic acid ethyoxyl ethyoxyl ethyl ester with relatively high polarity, and polycations (1-vinyl-3-ethylimidazole bis (trifluoromethanesulfonyl) imide salt) are further copolymerized to weaken constraint of a polymer chain to metal cations. And finally, the ionic gel electrolyte with high ionic conductivity (4.6 mS / cm) and strong low temperature resistance (-90 DEG C) is realized.

The invention relates to the technical field of materials, in particular to a trinickel disulfide film based on sulfide and a preparation method thereof and application of the trinickel disulfide film to the field of electrochromism for the first time. The conventional electrochromic inorganic material mainly focuses on the research of oxides, and tends to be mature after many years of research, and has certain limitation on the selection of the research of the electrochromic material, so that the research of the electrochromic inorganic material is facilitated on the basis of the reasons such as the limitation. The prepared sulfide-based trinickel disulfide film deposited on the FTO glass can realize a color fading electrochromic phenomenon by applying voltage in a potassium hydroxide solution, and the sulfide-based trinickel disulfide electrochromic film is simple to prepare, has good conductivity and high transmittance, and can be applied to the field of electrochromic devices. The near-infrared modulated light range is large (the near-infrared modulated light range can reach 84.9% at the position of 520 nm), the response time is short, the stability is good, and the near-infrared modulated light can be applied to electrochromic devices and related fields.

The present technology relates to an ionic plastic crystal comprising at least one delocalized anion paired with at least one an organic guanidine, amidine or phosphazene organic superbase-derived cation for use in electrochemical applications, particularly in electrochemical accumulators such as batteries, electrochromic devices, and supercapacitors. The present technology also relates to an ionic plastic crystal composition, an ionic plastic crystal-based solid electrolyte composition, an ionic plastic crystal-based solid electrolyte, an electrode material comprising the ionic plastic crystal or the ionic plastic crystal composition. Their uses in electrochemical cells and electrochemical accumulators as well as their processes of manufacturing and an NHO-stabilized intermediary ion-neutral complex are also described.

The application discloses a display device and a manufacturing method thereof. The display device comprises a first substrate, a second substrate, a barrier wall between the first substrate and the second substrate, and an electrochromic device in a containing space formed by the first substrate, the second substrate and the barrier wall. The barrier wall is formed by printing a first pre-solution on the substrate and then performing a cross-linking polymerization reaction to solidify. The barrier wall itself has certain flexibility and viscosity. The film tearing step is avoided when the barrier wall is made of double-sided adhesive material, the manufacturing efficiency is improved, and the electrolyte connection between adjacent electrochromic devices caused by the inconsistent height of the barrier wall during the film tearing process is avoided, thereby avoiding color crosstalk during coloring.

The invention relates to the technical field of electrochromism, in particular to a high-hydroxyl polyvinyl acetal flame-retardant intermediate film for electrochromism sound insulation glass. According to the specific technical scheme, the preparation method of the high-hydroxyl polyvinyl acetal flame-retardant intermediate film for the electrochromic sound insulation glass comprises the following steps: adding polyvinyl butyral with a low acetalation degree into N, N-dimethylformamide, heating, stirring and dissolving, sequentially adding a plasticizer and electrolyte salt, heating, stirring and dissolving, adding an initiator, stirring and dissolving, adding an initiator, and stirring and dissolving to obtain the high-hydroxyl polyvinyl acetal flame-retardant intermediate film for the electrochromic sound insulation glass, thereby obtaining the high-hydroxyl polyvinyl acetal flame-retardant intermediate film for the electrochromic sound insulation glass. And pouring into a mold, vacuumizing to remove bubbles, and heating to remove the solvent, thereby obtaining the flame-retardant intermediate film. The problems that an existing liquid reversible metal electrodeposition electrochromic device leaks liquid, is prone to volatilization and has potential safety hazards are solved.

This invention relates to the field of all-solid-state electrochromic devices, and discloses an all-solid-state electrochromic device and its fabrication method. The device includes a conductive substrate; an electrochromic layer disposed on the conductive substrate, the electrochromic layer comprising a nanoporous metal oxide film and electrochromic molecules chemically bonded to the surface of the nanoporous metal oxide film via anchoring groups; a gel polymer electrolyte layer covering the electrochromic layer, the gel polymer electrolyte layer being prepared from a polymer matrix, lithium salt, photoinitiator, plasticizer, and crosslinking agent; and a counter electrode covering the gel polymer electrolyte layer; wherein the electrochromic layer, the gel polymer electrolyte layer, and the counter electrode are sequentially stacked to form a sandwich structure. This invention achieves synergistic optimization of electron transfer and ion compensation processes, providing a complete implementation path for obtaining an ultrafast-response all-solid-state electrochromic device.

The invention belongs to the technical field of electricity, and provides an electrochromic glass window capable of storing energy and a manufacturing method.The electrochromic glass window capable of storing energy comprises an ITO glass substrate, and the ITO glass substrate is manufactured through a magnetron sputtering method and has sufficient conductivity and uniformity; a thin film prepared from poly-N-phenylglycine (PNPG) is used as a positive electrode, and a constant-pressure polymerization method is adopted for preparation; zinc (Zn) is used as a negative electrode; 1 mol / L ZnSO4 is used as an electrolyte; the solar panel is integrated outside the glass window and is used for realizing integration of energy storage and power supply; the solar panel is integrated outside the glass window, conversion and storage of solar energy are achieved, energy is supplied to the electrochromism function, dependence on an external power source is reduced, the energy utilization efficiency is improved, energy self-sufficiency is achieved, and compared with a traditional electrochromism device, energy consumption is greatly reduced; the stability and the energy storage and discharge capability are better, and the good balance between the electrochromic performance and the energy storage performance is realized.

This invention discloses a multi-spectral compatible reflective electrochromic thin-film device with an integrated frequency-selective surface and its fabrication method. The device employs a fully flexible stacked structure, consisting of, from top to bottom: a frequency-selective surface, a transparent encapsulation dielectric layer, an electrochromic working electrode, an electrolyte layer, a counter electrode, and a bottom encapsulation film. This invention utilizes a frequency-selective surface prepared through simple solution processes such as spraying for spatial impedance matching, combined with the efficient electromagnetic dissipation of the transparent dielectric layer, significantly reducing the device thickness and achieving polarization-insensitive broadband microwave absorption. This device overcomes the radar reflection contamination problem caused by the underlying metal in traditional electrochromic devices, achieving omnidirectional stable electromagnetic protection while ensuring high transmittance in the visible light band and dynamic multi-color state control. This invention combines low cost, ultra-thin conformal design, and multi-spectral compatibility, making it suitable for integrated intelligent control and microwave protection scenarios.

The present disclosure relates to a method and apparatus for controlling a plurality of electrochromic devices, a medium, and a system. The method comprises: acquiring current state representation parameters of electrochromic devices; determining a target parameter range on the basis of the current state representation parameters of the electrochromic devices, and screening out an electrochromic device of which the state representation parameter does not fall within the target parameter range; and on the basis of a preset condition, charging or discharging the electrochromic device of which the state representation parameter does not fall within the target parameter range. The present disclosure solves the technical problem in the prior art that in an application scenario where there are a plurality of electrochromic devices, the transmittance of the electrochromic devices after a certain period of time is inconsistent, thereby affecting the visual effect of a user, and has the effects of maintaining the consistency of the transmittance of the electrochromic devices and improving user experience.

The application belongs to the technical field of electrochromic devices, and particularly relates to a one-piece electrochromic device of silica gel and a preparation method thereof. The one-piece electrochromic device has a three-layer structure, which is a transparent conductive substrate, a color-changing gel and a transparent conductive substrate. The color-changing gel is a composite gel of silica gel and a metal oxygen cluster material, and by adding a suitable redox balancing species and an ionic liquid, the one-piece electrochromic device with high optical contrast and super-long cycle stability is obtained.

The application relates to a self-bleaching electrochromic device based on titanium dioxide and lithium iodide, and belongs to the technical field of electrochromic devices. The application discloses a self-bleaching electrochromic device based on titanium dioxide and lithium iodide, which comprises a non-polar self-bleaching electrochromic device or a polar self-bleaching electrochromic device. The application has the following advantages: (1) the cycle life of the electrochromic device is improved, and the color change contrast of the electrode in the 300nm-800nm visible light band is less than 5% after at least 4000 coloring-bleaching on-off cycle operations; (2) the electrode is self-bleached, that is, the electrode can be completely restored to the state before color change within 60s under the condition of no additional voltage; and (3) the device is non-polar, that is, both electrodes can be used as cathodes or anodes, and can normally work under the condition of an additional positive or negative voltage, and the same color change performance index is achieved.

Aspects of this disclosure concern controllers and control methods for applying a drive voltage to bus bars of optically switchable devices such as electrochromic devices. Such devices are often provided on windows such as architectural glass. In certain embodiments, the applied drive voltage is controlled in a manner that efficiently drives an optical transition over the entire surface of the electrochromic device. The drive voltage is controlled to account for differences in effective voltage experienced in regions between the bus bars and regions proximate the bus bars. Regions near the bus bars experience the highest effective voltage. In some cases, feedback may be used to monitor an optical transition. In these or other cases, a group of optically switchable devices may transition together over a particular duration to achieve approximately uniform tint states over time during the transition.

A method of manufacturing a thin film is provided. The method includes providing a plurality of crystalline hexagonal tungsten trioxide particles, size-reducing the crystalline hexagonal tungsten trioxide particles by grinding to produce crystalline hexagonal tungsten trioxide nanostructures, and coating the crystalline hexagonal tungsten trioxide nanostructures onto a substrate to produce a thin film. An electrochromic multi-layer stack is also provided.

The embodiments herein relate to electrochromic stacks, electrochromic devices, and methods and apparatus for making such stacks and devices. In various embodiments, an anodically coloring layer in an electrochromic stack or device is fabricated to include nickel tungsten tantalum oxide (NiWTaO). This material is particularly beneficial in that it is very transparent in its clear state.