In 2009, she founded Prieto Battery. The company is geared towards developing and commercializing a rechargeable battery that will last longer, charge faster, and be free of toxic or flammable materials that make up traditional batteries. By 2014, Prieto and collaborators had created a small pilot production line in her laboratory at CSU to demonstrate their viability to larger investors. Unlike traditional batteries, Prieto's battery is
solid-state, meaning the battery uses solid
electrodes and a
solid electrolyte, rather than liquid or polymer gel electrolytes. The battery makes use of a three-dimensional copper foam that undergoes a coating process through two
electroplating steps: one to create a positively charged electrode (
anode made of
copper antimonide) and one to create the negatively-charged electrode (
cathode). and reducing charging times. This makes Prieto's battery charge faster and store more energy than lithium-ion batteries. The batteries are lightweight, flexible, use non-toxic materials, can come in a variety of shapes, and do not overheat or catch fire. Investors in Prieto Battery include Stanley Ventures and
Intel Capital. In 2016, Prieto demonstrated her batteries to
Stanley Black & Decker, using one of their 3D printers. == Awards and honors ==