Wednesday, September 7, 2016

Science & Technology: Ultracapacitors Designed for Geothermal Energy Use Can Work at 300 degrees Celsius

New applications for ultracapacitors (MIT News)

Based on research at Massachusetts Institute of Technology (MIT), FastCAP’s ultracapacitors store up to 10 times the energy and achieve 10 times the power density of commercial counterparts. They’re also the only commercial ultracapacitors capable of withstanding temperatures reaching as high as 300 degrees Celsius and as low as minus 110 C, allowing them to endure conditions found in drilling wells and outer space. Most recently, the company developed a AA-battery-sized ultracapacitor with the perks of its bigger models, so clients can put the devices in places where ultracapacitors couldn’t fit before.

In 2009, FastCAP won a $5 million U.S. Department of Energy (DOE) Advanced Research Projects Agency-Energy grant to design ultracapacitors for its target markets in automotive and stationary storage. FastCAP also earned a 2012 DOE Geothermal Technologies Program grant to develop very high-temperature energy storage for geothermal well drilling, where temperatures far exceed what available energy-storage devices can tolerate. Still under development, these ultracapacitors have proven to perform from minus 5 C to over 250 C.

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