Abstract
Currently, there is an enormous amount of energy available from salinity gradients, which could be used for clean hydrogen production. Through the use of a favorable oxygen reduction reaction (ORR) cathode, the projected electrical energy generated by a single pass ammonium bicarbonate reverse electrodialysis (RED) system approached 78 W h m-3. However, if RED is operated with the less favorable (higher overpotential) hydrogen evolution electrode and hydrogen gas is harvested, the energy recovered increases by as much ∼1.5× to 118 W h m-3. Indirect hydrogen production through coupling an RED stack with an external electrolysis system was only projected to achieve 35 W h m-3 or ∼1/3 of that produced through direct hydrogen generation.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1632-1638 |
| Number of pages | 7 |
| Journal | Phys. Chem. Chem. Phys. |
| Volume | 16 |
| Issue number | 4 |
| DOIs | |
| State | Published - 2014 |
| Externally published | Yes |
Bibliographical note
KAUST Repository Item: Exported on 2020-10-01Acknowledged KAUST grant number(s): KUS-I1-003-13
Acknowledgements: This material is based upon work supported by the National Science Foundation Grant No. DGE1255832 to M. C. H., and a grant from the King Abdullah University of Science and Technology (KAUST) (Award KUS-I1-003-13).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
