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Hear About Colorado’s Prieto Battery Founder and CEO Amy Prieto’s brainchild is a Lithium-ion battery technology which may prove to be a game-changer due to its versatility and performance. It’s the biggest bottleneck in the alternative energy value chain as well as the development of cordless devices. Battery storage. The best available lithium-ion (Li-ion) batteries lack design flexibility so devices often have to be designed around their batteries instead of the other way around.There’s also an unfortunate trade-off between shorter charging times and longevity. A lot of this has to do with the layered, 2D architecture and chemistry of batteries, including Li-ion batteries, requiring them to be boxy and limiting the speed and direction that electrons can flow. A2Z Manufacturing Rocky Mountain •
32 • Nov / Dec 2017
“Batteries right now are limiting almost all the applications that they’re put into,” states Dr. Amy Prieto, founder and CEO. A chemistry professor at Colorado State University with a doctorate from University of California, Berkeley, Dr. Prieto piloted a solid-state, 3D Liion battery several years ago at the CSU Research Innovation Center. Instead of sheets of layered metal, Prieto batteries integrate a copper foam substrate, making its shape much more customizable and providing other functional advantages. All this should amount to shorter charge times, improved safety, greater design flexibility and greater longevity compared to other batteries. To a large extent, the underlying theory has been tested and confirmed. Prieto Battery has secured several coveted grants and partnerships and is well along the path to commercialization. Tests have shown that Prieto batteries can achieve over 1,000 cycles, which is about double what would be expected of a smartphone battery, says Prieto. “We are trying to combine several key battery metrics. Usually a battery is designed to either have a lot of energy density, or be fast, or last a long time. We are really trying to be able to combine fast and long time while still maintaining really good energy density.” Prieto Battery has received two State of Colorado Advanced Industry Accelerator grants and secured high-profile partnerships with Intel (2015), Stanley Ventures (2016) and Moses Lake Industries (2017). Intel and Prieto are working to introduce new rechargeable battery solutions for computing devices. Stanley Ventures, the recently formed venture arm of Stanley Black & Decker, hopes to advance the development of cordless power tools. Because of the amount of power they demand, available technologies don’t cut it. In April 2017, Prieto signed a memo-