In 1966, General Electric Company developed water electrolytic cell based on proton conduction concept, using polymer membrane as electrolyte. PEM cells were commercialized by General Electric in 1...
Three main types of silicon carbide polymorph
There are about 250 crystalline forms of silicon carbide. Because silicon carbide has a series of homogeneous polytypes with similar crystal structure...
Since its discovery, silicon carbide has attracted widespread attention. Silicon carbide is composed of half Si atoms and half C atoms, which are connected by covalent bonds through electron pairs ...
1. Third-generation semiconductors
The first-generation semiconductor technology was developed based on semiconductor materials such as Si and Ge. It is the material basis for the development of tr...
Industrially, natural graphite is classified into crystalline graphite and cryptocrystalline graphite according to the crystal form. The crystalline graphite is better crystallized, and the crystal...
Sichuan Province is vast in area and rich in mineral resources. Among them, the prospecting potential of emerging strategic resources is huge. A few days ago, it was led by Sichuan Natural Resourc...