Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Decoupling hydrogen and oxygen evolution during electrolytic water splitting using an electron-coupled-proton buffer

Decoupling hydrogen and oxygen evolution during electrolytic water splitting using an... Hydrogen is essential to several key industrial processes and could play a major role as an energy carrier in a future ‘hydrogen economy’. Although the majority of the world's hydrogen supply currently comes from the reformation of fossil fuels, its generation from water using renewables-generated power could provide a hydrogen source without increasing atmospheric CO2 levels. Conventional water electrolysis produces H2 and O2 simultaneously, such that these gases must be generated in separate spaces to prevent their mixing. Herein, using the polyoxometalate H3PMo12O40, we introduce the concept of the electron-coupled-proton buffer (ECPB), whereby O2 and H2 can be produced at separate times during water electrolysis. This could have advantages in preventing gas mixing in the headspaces of high-pressure electrolysis cells, with implications for safety and electrolyser degradation. Furthermore, we demonstrate that temporally separated O2 and H2 production allows greater flexibility regarding the membranes and electrodes that can be used in water-splitting cells. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Chemistry Springer Journals

Decoupling hydrogen and oxygen evolution during electrolytic water splitting using an electron-coupled-proton buffer

Nature Chemistry , Volume 5 (5) – Apr 14, 2013

Loading next page...
 
/lp/springer-journals/decoupling-hydrogen-and-oxygen-evolution-during-electrolytic-water-MFJGVcq9DD

References (52)

Publisher
Springer Journals
Copyright
Copyright © 2013 by Nature Publishing Group
Subject
Chemistry; Chemistry/Food Science, general; Analytical Chemistry; Organic Chemistry; Physical Chemistry; Inorganic Chemistry; Biochemistry, general
ISSN
1755-4330
eISSN
1755-4349
DOI
10.1038/nchem.1621
Publisher site
See Article on Publisher Site

Abstract

Hydrogen is essential to several key industrial processes and could play a major role as an energy carrier in a future ‘hydrogen economy’. Although the majority of the world's hydrogen supply currently comes from the reformation of fossil fuels, its generation from water using renewables-generated power could provide a hydrogen source without increasing atmospheric CO2 levels. Conventional water electrolysis produces H2 and O2 simultaneously, such that these gases must be generated in separate spaces to prevent their mixing. Herein, using the polyoxometalate H3PMo12O40, we introduce the concept of the electron-coupled-proton buffer (ECPB), whereby O2 and H2 can be produced at separate times during water electrolysis. This could have advantages in preventing gas mixing in the headspaces of high-pressure electrolysis cells, with implications for safety and electrolyser degradation. Furthermore, we demonstrate that temporally separated O2 and H2 production allows greater flexibility regarding the membranes and electrodes that can be used in water-splitting cells.

Journal

Nature ChemistrySpringer Journals

Published: Apr 14, 2013

There are no references for this article.