Standard Oil Company (the SOHIO) Production of activated carbon (AC) as an electrode material, an aqueous sulfuric acid electrolyte ultracapacitor commercialized in 1969. This technology was later handed over to the Nippon Electric Company (NEC), the company began producing super capacitors for electric vehicle starting system. This has led to large-scale commercial application of electrochemical capacitors, which gave birth to the name of a super capacitor. In 1879, German physicist Helmholz proposed electric double layer theory is based on supercapacitors.