When it comes to electrochromism, you may think of tungsten oxide! After all, tungsten trioxide is the most studied inorganic electrochromic material and cathode coloring material. In fact, the research on electrochromism has a long history since researchers have discovered that current can cause optical changes.

Tungsten oxide electrochromic film is an important part for preparing a smart window, which is also known as an electrochromic window. The electrochromic smart window is an electrochromic device based on a tungsten oxide electrochromic thin film proposed by American scientist Lampert and Swedish scientist Granqvist in the 1980s.

Tungsten oxide may be applied for producing complementary electrochromic glass. As you may have known, tungsten trioxide is a well-developed electrochromic material with excellent electrochromic properties and a large light modulation range. It is a cathode coloring material. And nickel oxide is also a typical electrochromic material belonging to the anode coloring material. Therefore, a complementary electrochromic glass can be assembled with a tungsten oxide electrochromic film and a nickel oxide electrochromic film, as cathode coloring material and anode coloring material, respectively. And there are many researches on electrochromic devices based on tungsten trioxide and nickel oxide.

Tungsten oxide - nickel oxide composite electrode complementary electrochromic glass has a good shielding performance to infrared rays and ultraviolet rays in sunlight, which saves energy and protects your privacy. And this is because the combination of tungsten oxide electrochromic thin film and nickel oxide electrochromic thin film can increase the light modulation range of the electrochromic device and accelerate the response time.