| Cover | Aug. 28, 2024 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 28, 2024 |
| 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 | 5637 La Ribera St. |
| Entity Address, Address Line Two | Suite A |
| Entity Address, City or Town | Livermore |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94550 |
| City Area Code | (925) |
| Local Phone Number | 455-9400 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common stock, par value $0.0001 per share | |
| 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 $345.00 | |
| Title of 12(b) Security | Warrants to purchase one share of common stock, each at an exercise price of $345.00 |
| Trading Symbol | ADNWW |
| Security Exchange Name | NASDAQ |
