The project describes the operation of a cheap keychain lasers that are being sold in low price. In theory, most common laser heads contains two semiconductors inside which includes a laser diode (LD) ...

Electric car owners and InsideEVs readers normally know what an anode and a cathode are. At the Volkswagen Power Day, the German automaker wanted to take the definitions of the negative and positive ...

Cathodes play a dominant role in defining cell energy density, and also make up a significant proportion of cell costs, due to the use of high-cost metals such as cobalt, nickel and lithium. Standard ...

Lithium-ion batteries are a kind of rechargeable battery that is charged or discharged through desorption or insertion of lithium ions (Li +) from or into the active material structure. In recent ...

In 2020, Tesla announced a breakthrough battery that would be much cheaper to produce while offering higher energy density thanks to new technologies like dry cathode coating and silicone anode.