Table 6 Outputs of journals, patents, technology, and business cases per each green hydrogen technologies
From: A study on a political system for the advance in green hydrogen technology: a South Korea case study
| Â | Water-to-hydrogen | Hydrogen from biomass | Hydrogen from ammonia | Microorganism aided process | The others |
|---|---|---|---|---|---|
Journals | 2599 (80%) | 246 (7.5%) | 47 (1.4%) | 114 (3.4%) | 252 (7.7%) |
Patents | 795 (78%) | 71 (8.3%) | 27 (3.3%) | 58 (6.3%) | 42 (4.1%) |
Technology | 32 (82%) | 3 (7.6%) | 1 (2.5%) | 3 (7.6%) | 0 (0%) |
Business | 32 (44%) | 34 (47%) | 1 (1.3%) | 3 (4.1%) | 2 (2.7%) |