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Infinite Power Solutions (IPS), a Golden, Colo.-based developer of thin-film lithium batteries, has raised $34.7 million from a group of investors led by D. E. Shaw Group and Polaris Venture Partners. IPS says it will mainly use the funds to build a high-volume facility to make its postage-stamp-size batteries, which are expected to power a variety of microcontrollers, sensors, and tags. According to IPS, thin-film batteries are manufactured through a vacuum deposition process that uses lithium phosphorus oxynitride as an electrolyte.
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