Solid-state batteries replace the liquid or gel-form electrolyte found in conventional lithium-ion batteries with a solid conductive material. Also developing solid state batteries. In Search Of Solid State Battery Stocks Alternative Energy Stocks The company is based in San-Jose and backed by Bill Gates Volkswagen Continental AG and George Soros among other prominent investors. Companies working on solid state batteries . The company established in 1986 seems to be making unique progress in solid-state technology. Compared with todays lithium-ion batteries solid-state batteries charge quicker and have a greater energy density meaning vehicles can go farther with the same size battery. Industrial firms such as Mitsui Kinzoku petrol company Idemitsu Kosan and Sumitomo Chemical are all gearing up to make the solid electrolytes. The whole world currently bets solid-state. Tesla isnt the only company Panasonic is. QuantumScape makes batteries for electric cars. QS tha