BOSTON–(BUSINESS WIRE)–Advent Technologies Holdings, Inc. (NASDAQ: ADN), an innovation-driven leader in the fuel cell and hydrogen technology space (the “Company” or “Advent”), is pleased to announce that its subsidiary, Advent Technologies A/S, has received approval for funding for its latest research and development project, RiverCell 3. This project aims to develop a maritime fuel cell system resulting in an auxiliary power unit with a total capacity exceeding 500kW. This will be accomplis