 BOSTON--BUSINESS WIRE--Advent Technologies Holdings, Inc. NASDAQ: ADN Advent today announced that an article co-authored by a group including Dr. Emory De Castro, Advent Technologies Chief Technology Officer, has been published in Joule, A Cell Press journal. The article presents the groups perspective on near-, mid-, and long-term targets for proton conductors of heavy-duty fuel cells. In addition to De Castro, the article was led by Craig S. Gittleman, Global Fuel Cell Business at G 