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 titanium 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.

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 titanium 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.

An electrochromic device includes: a first electrode which transmits light; a second electrode disposed opposite the first electrode; an electrolyte located between the first electrode and the second electrode, and containing metal depositable on one of the first electrode and the second electrode, according to a potential difference between the first electrode and the second electrode; a driver which applies a predetermined potential to a target electrode which is at least one of the first electrode and the second electrode; and a controller which changes a potential application portion of the target electrode to which the predetermined potential is applied, in a potential application period during which the predetermined potential is applied.

An electrochromic device includes: a first electrode which transmits light; a second electrode disposed opposite the first electrode; an electrolyte located between the first electrode and the second electrode, and containing metal depositable on one of the first electrode and the second electrode, according to a potential difference between the first electrode and the second electrode; a driver which applies a predetermined potential to a target electrode which is at least one of the first electrode and the second electrode; and a controller which changes a potential application portion of the target electrode to which the predetermined potential is applied, in a potential application period during which the predetermined potential is applied.

An electrochemical device includes an electrolyte layer containing an electrodepositable material including Ag and a mediating material including any of Ta, Mo, and Nb, a pair of substrates to hold the electrolyte layer therebetween, and a pair of electrodes that are disposed on the mutually opposed surfaces of the respective substrates and are insoluble in the electrolyte layer.

An electrochemical device includes an electrolyte layer containing an electrodepositable material including Ag and a mediating material including any of Ta, Mo, and Nb, a pair of substrates to hold the electrolyte layer therebetween, and a pair of electrodes that are disposed on the mutually opposed surfaces of the respective substrates and are insoluble in the electrolyte layer.

Electrochromic device including: first electrode; a first auxiliary electrode; a second electrode; a second auxiliary electrode having average distance of 100 mm or less with the first auxiliary electrode; an electrochromic layer; a solid electrolyte layer; and controlling unit configured to control to apply voltage according to a driving pattern that is at least one selected from the group consisting of a first driving pattern, a second driving pattern, and an initialization driving pattern, wherein the first driving pattern is a driving pattern configured to turn the electrochromic layer into first coloring state, the second driving pattern is a driving pattern configured to turn the first coloring state into a second coloring state that has coloring density lower than coloring density of the first coloring state, and the initialization driving pattern is driving pattern for forming an initial decolored state.

An electrochromic device having the adjustable reflectivity, and an electronic terminal comprising same. The electrochromic device comprises a first transparent substrate layer (1), an electrochromic stack (2), a metal ion stack (3), and a second substrate layer (4) which are stacked in sequence. The electrochromic stack (2) comprises a first transparent conductive layer (21) and a first electrochromic functional layer (22) which are stacked. The metal ion stack (3) comprises a second transparent conductive layer (31), a metal ion layer (32), and an electrodeposition suppression layer (33) which are stacked in sequence. The first electrochromic functional layer (22) is adjacent to the electrodeposition suppression layer (33). The visual effect of the electrochromic device is enhanced by the cooperation of the change in the transmittance of the electrochromic stack (2) and the change in the reflectivity of the metal ion stack (3).

An electrochromic device having the adjustable reflectivity, and an electronic terminal comprising same. The electrochromic device comprises a first transparent substrate layer (1), an electrochromic stack (2), a metal ion stack (3), and a second substrate layer (4) which are stacked in sequence. The electrochromic stack (2) comprises a first transparent conductive layer (21) and a first electrochromic functional layer (22) which are stacked. The metal ion stack (3) comprises a second transparent conductive layer (31), a metal ion layer (32), and an electrodeposition suppression layer (33) which are stacked in sequence. The first electrochromic functional layer (22) is adjacent to the electrodeposition suppression layer (33). The visual effect of the electrochromic device is enhanced by the cooperation of the change in the transmittance of the electrochromic stack (2) and the change in the reflectivity of the metal ion stack (3).

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-niobium-oxide (NiWNbO). This material is particularly beneficial in that it is very transparent in its clear state.