Forbes reported that magnesium fuel cell technology that creates electricity by using salt water as an electrolyte is being commercialized by Tokyo-based Furukawa Battery Co. (TSE:6937).
As quoted in the market news:
Every fuel cell, which generates electricity by a chemical reaction (as opposed to combustion), has an electrolyte. The electrolyte carries electrically charged particles from one electrode to the other.
The main electrolytes used today are alkali, molten carbonate, phosphoric acid, proton exchange membrane and solid oxide. The choice of electrolyte is a critical constraint that drives many of the choices fuel cell developers must make as they pursue more efficient fuel cell technologies.