H2 Crossover Control Technology (HCCT)
functional layers of proprietary design
- Xiange® layer: mitigates H2 diffusion into the PEM
- GRC layer: neutralizes H2-x before reaching the ACL
operation advantages
- allows thinner PEMs at high pressure (performance advantage)
- increases faradaic efficiency (higher H₂ yield)
- allows low-power operation (larger load flexibility)
- Allows intermittent operation (better match w/ solar & wind)
H₂-x mitigation capability
| H2 in O2 @ 3MPa, 2A/cm², 60℃ | ||
| 50μm | w/ HCCT | ≤0.3% |
| 80μm | w/ HCCT | ≤0.2% |
| 990-PK | w/ HCCT | ≤0.2% |
| N115 | w/ HCCT | ≤0.1% |
