 CAMBRIDGE, Mass. NEW YORK--BUSINESS WIRE--Advent Technologies Inc. Advent, an innovation-driven company in the fuel cell and hydrogen technology space, and AMCI Acquisition Corp. NASDAQ: AMCI AMCI, a special purpose acquisition company, today announced that they have completed their previously announced business combination the Business Combination. The combined company, Advent Technologies Holdings, Inc. Advent or the Company, will begin trading on Nasdaq tomorrow, Febr 