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Cover
Jun. 13, 2023
Statement [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jun. 13, 2023
Current Fiscal Year End Date --12-31
Entity File Number 001-38742
Entity Registrant Name ADVENT TECHNOLOGIES HOLDINGS, INC.
Entity Central Index Key 0001744494
Entity Tax Identification Number 83-0982969
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 500 Rutherford Avenue
Entity Address, Address Line Two Suite 102
Entity Address, City or Town Boston
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02129
City Area Code (617)
Local Phone Number 655-6000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Common Stock, par value $0.0001 per share  
Statement [Line Items]  
Title of 12(b) Security Common Stock, par value $0.0001 per share
Trading Symbol ADN
Security Exchange Name NASDAQ
Warrants to purchase one share of common stock, each at an exercise price of $11.50  
Statement [Line Items]  
Title of 12(b) Security Warrants to purchase one share of common stock, each at an exercise price of $11.50
Trading Symbol ADNWW
Security Exchange Name NASDAQ