Ioxus draws a direct comparison to Maxwell’s DuraBlue technology, which cannot survive under the same conditions, Ioxus claims. Maxwell underperforms at 65°C when compared to Titan at 80°C, which has lower equivalent series resistance (ESR) and capacitance fade, higher initial capacitance, and far lower leakage current than Maxwell.

Top. Ioxus vs. Maxwell, capacitance and ESR endurance. Bottom. Ioxus vs. Maxwell, comparison endurance testing 2.7V at 85 ˚C. Click to enlarge.

Conventionally, increasing temperature shortens ultracapacitor design life and performance. Numerous research groups have explored technology to enable higher temperature supercapacitors, with a particular focus on the electrolyte and separator. (In 2013, a team from Rice University reported designing supercapacitor reliable at temperatures of up to 200 ˚C by using a novel clay-based membrane electrolyte.)

This 85°C performance benchmark required us to make significant advances in the fundamental science behind ultracapacitor performance. Titan encompasses the fields of electrochemistry, surface chemistry and physical chemistry, just to name a few. Our innovations have allowed us to achieve one of the biggest technological advances in ultracapacitor technology since commercialization.

—Dr. George Lane, Director of Research for Ioxus