Leah Ellis

Greentown Labs Community Board Member

Co-founder and CEO, Sublime Systems

Dr. Leah Ellis is co-founder and CEO at Sublime Systems, a company that has developed a breakthrough process to produce carbon-neutral cement. The technology replaces the industry’s legacy fossil-fuel intensive thermal calciner with an electrochemical process that produces carbon-neutral lime at ambient temperatures with renewable electricity. Sublime’s technology was co-invented by Dr. Ellis and Sublime’s co-founder, Professor Yet-Ming Chiang, at MIT’s Department of Materials Science and Engineering during Leah’s tenure as NSERC/Banting Postdoctoral Fellow. Prior to working on cement at MIT, Dr. Ellis earned her PhD in chemistry with Professor Jeff Dahn at Dalhousie University, Canada, where she worked on optimizing lithium-ion cell lifetime in partnerships with 3M and Tesla. Dr. Ellis is an Activate Boston Entrepreneurial Fellow and was recently named among MIT Technology Review’s 35 Innovators under 35.