Ioxus introduces high-temperature ultracapacitors with Titan technology; targeting automotive and transport
12 December 2014
Ioxus, a manufacturer of premium performance ultracapacitor technology for use in transportation, industrial and energy applications, has introduced high-temperature 1250 Farad (F) cells with Titan high-temperature technology. Titan follows Ioxus’ earlier release of the results of an extensive durability test of its flagship hybrid bus product, the 48V / 165F module. (Earlier post.)
Ioxus’ Titan technology meets a key automotive industry requirement: a system with a wider operating range that meets both cold and high temperature standards. Ioxus’ newest line of cells, designed with novel chemistry solutions for this market, function properly at temperature ranges of -40 to 85 °C, and deliver 2.7 volts at these temperatures.
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