Complex sentence: Supercapacitors, a new type of electrochemical capacitors, also called ultracapacitors, has been established as generic term for electric double-layer capacitors (EDLC), pseudocapacitors and hybrid capacitors.
Split into simpler sentences: Supercapacitors, a new type of electrochemical capacitor are also called ultracapacitors. The name is a generic term for electric double-layer capacitors (EDLC), pseudocapacitors and hybrid capacitors.