The present invention relates to an electrochromic solution and a use thereof, wherein the said solution comprises: a solvent; a thickening polymer agent having a molecular weight of at least 50,000 g/mol, preferably 200,000 g/mol, more preferably of at least 250,000 g/mol; at least an additive having a molecular weight between 300 and 50,000 g/mol, preferably between 320 and 20,000 g/mol; a redox chemical mixture in solution in said solvent said mixture being constituted of at least one electrochromic reducing compound and at least one electrochromic oxidizing compound, and which colors in the presence of an applied voltage and which bleaches to a colorless condition in the absence of an applied voltage. The invention further relates to a device comprising said solution.

Electrochromic devices and components thereof and systems and methods for controlling electrochromic devices are disclosed. Further, electrochromic materials, electrochromic compositions and electrochromic layers useful for the devices and systems can be in the form of a gel. The present disclosure also provide methods to fabricate electrochromic devices and components thereof, electrochromic compositions, layers and gels.

An electro-optic element includes a first electroactive compartment including an electroactive film having a first electroactive component and a second electroactive compartment including an electroactive solution or gel having a second electroactive component. An ion selective material is disposed between the first and second electroactive compartments and is configured to inhibit diffusion of the second electroactive component in an activated state from the second electroactive compartment to the first electroactive compartment. At least one of the first and second electroactive components is electrochromic such that the electro-optic element is configured to reversibly attenuate transmittance of light having a wavelength within a predetermined wavelength range when an electrical potential is applied to the electro-optic element.

An organic compound represented by General Formula (1),

##STR00001##

in which, in General Formula (1), R.sub.1 represents an alkyl group or an alkoxy group, X.sub.1 and X.sub.2 are each independently selected from an alkyl group which may have a substituent, an aryl group which may have a substituent, or an aralkyl group which may have a substituent, and A.sub.1.sup.− and A.sub.2.sup.− each independently represent a monovalent anion.

The present invention relates to a group of novel electrochromic materials. More specifically, it relates to electrochromic materials based on either single or two-core viologen systems and the use of these viologen systems as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.

Methods and materials to fabricate electrochromic including electrochemical devices are disclosed. In particular, emphasis is placed on the composition, fabrication and incorporation of electrolytic sheets in these devices. Composition, fabrication and incorporation of redox materials and sealants suitable for these devices are also disclosed. Incorporation of EC devices in insulated glass system (IGU) windows is also disclosed.

Disclosed are a color-changing polymer composition, an ion-conductive composition, and a transparent electrode layer composition for a painting-type spray coating process, and an electrochromic device including the same. The color-changing polymer composition for an electrochromic device includes an amount of about 5 to 30 wt % of a color-changing material, an amount of about 0.01 to 1 wt % of ferrocene, an amount of about 10 to 30 wt % of a polymer matrix, an amount of about 0 to 70 wt % of an ion-conductive material, and an amount of about 1 to 10 wt % of a POSS (polyhedral oligomeric silsesquioxane) derivative, based on the total weight of the composition.

This invention relates to multi-color electrochromic devices and to methods of use thereof. The invention also relates to a process of preparation of the electrochromic devices.

An energy storage device includes a cathodic material in an activated state; and an anodic material in an activated state; wherein: the cathodic material is covalently attached to, or confined within, a first polymer matrix, the first polymer matrix is configured to prevent or minimize substantial diffusion of the cathodic material in the activated state; and the anodic material is a phenazine, a phenothiazine, a triphenodithiazine, a carbazole, a indolocarbazole, a biscarbazole, or a ferrocene covalently attached to, or confined within, a second polymer matrix, the second polymer matrix is configured to prevent or minimize substantial diffusion of the anodic material in the activated state.

An electro-optic element includes a first electroactive compartment including an electroactive film having a first electroactive component and a second electroactive compartment including an electroactive solution or gel having a second electroactive component. An ion selective material is disposed between the first and second electroactive compartments and is configured to inhibit diffusion of the second electroactive component in an activated state from the second electroactive compartment to the first electroactive compartment. At least one of the first and second electroactive components is electrochromic such that the electro-optic element is configured to reversibly attenuate transmittance of light having a wavelength within a predetermined wavelength range when an electrical potential is applied to the electro-optic element.