| fuel cell → HasA → two electrodes | 0.62 | |
| fuel cell → HasA → electrolyte | 0.59 | |
| fuel cell → HasA → cathode | 0.56 | |
| fuel cell → HasA → anode | 0.55 | |
| fuel cell → HasA → moving parts | 0.46 | |
| fuel cell → HasA → a solid | 0.41 | |
| fuel cell → HasA → other configurations | 0.33 | |
| fuel cell → HasA → a cross flow | 0.27 | |
| fuel cell → HasA → high efficiency | 0.27 | |
| fuel cell → HasA → water-repellent properties | 0.25 | |
| fuel cell → HasA → zero emissions | 0.25 | |
| fuel cell → HasA → few moving parts | 0.19 | |
| fuel cell → HasA → high power density | 0.19 |