Tungsten bronze has good electronic and ionic conductivity, superconductivity and optical properties, which has broad application prospects. In these performance of tungsten bronze, the conductivity and superconductivity have been researched earlier, especially the superconducting properties, which had become the focus in the sixties and seventies. Although there are reports about tungsten bronze type conductivity and electron conduction now, the conductivity and superconductivity is no longer the main content of performance studies.

 

The tungsten bronze was formed after counterion embedded in WO₃ under certain conditions, and it has colors itself because of the absorption and scattering of light, and the intensity of the absorption and scattering change with the x value changing, which also makes tungsten bronze present different colors. the optical properties of tungsten bronze are more prominent because of plasma H ⁺, Li ⁺, Na ⁺ and Ag ⁺ embedding, of which there’re more researches. In which H_xWO₃ has strongest absorption of light, Li ⁺ followed. However, lithium and sodium tungsten bronze have maximum light absorption when x ≈ 0.6, while the hydrogen tungsten bronze does not.

 

Electrochromism device and photochromism device as two important aspects of the tungsten bronze applications, optical performance is one of its basic principles. Electrochromism applications are related to plasma H+ and Li+ electrochemical reversible embedding on WO3 electrode.

 

Optical embedding is that plasma H⁺, Li⁺ and Na⁺ into WO₃ reversibly solid under irradiation of light, which is also an important performance of tungsten bronze, and it is the basic reactions to achieve color light system, photoelectric conversion and other applications. Because it’s the mixture of WO3 and tungsten bronze after intervention, this effect was also seen as an optical doping process.

 

New performance of humidity sensitive properties to the sensitive nature of some chemicals may also makes tungsten bronze effective application in humidity measuring instruments, chemical sensors and other devices.