Pellion Technologies, a clean-tech firm that aims to commercialize ion batteries, has outgrown its Cambridge office space and plans to move to Woburn. Pellion is currently housed in a small office at 625 Mount Auburn St. in Cambridge, but plans to move to a 15,000-square-foot space at 10 Gill St. in Woburn by April 1. "Pellion is coming from a smaller space, with an inefficient layout in Cambridge that wasn't working for them," said Jeremy Hood of T3 Advisors, a member of the Waltham-based...