Comparison of hydrogen production and electrical power generation for energy capture in closed-loop ammonium bicarbonate reverse electrodialysis systems

Marta C. Hatzell, Ivan Ivanov, Roland D. Cusick, Xiuping Zhu, Bruce E. Logan

Research output: Research - peer-reviewArticle

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.

LanguageEnglish (US)
Pages1632-1638
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume16
Issue number4
DOIs
StatePublished - Jan 28 2014

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electrodialysis
hydrogen production
carbonates
hydrogen
energy
Electrodialysis
Hydrogen production
Power generation
Hydrogen
ammonium bicarbonate
electrolysis
salinity
electric power
cathodes
gradients
electrodes
oxygen
gases
Electrolysis
Cathodes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Comparison of hydrogen production and electrical power generation for energy capture in closed-loop ammonium bicarbonate reverse electrodialysis systems. / Hatzell, Marta C.; Ivanov, Ivan; D. Cusick, Roland; Zhu, Xiuping; Logan, Bruce E.

In: Physical Chemistry Chemical Physics, Vol. 16, No. 4, 28.01.2014, p. 1632-1638.

Research output: Research - peer-reviewArticle

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