Journal
ACS APPLIED ENERGY MATERIALS
Volume 5, Issue 2, Pages 1403-1408Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.1c03998
Keywords
seawater; brine electrolysis; osmosis; oxygen evolution; water splitting
Funding
- Department of the Navy, Office of Naval Research [N00014-20-1-2418]
- Herchel Smith Graduate Fellowship in the Sciences
- National Science Foundation Graduate Research Fellowship Program (NSF GRFP)
- Harvard University Center for the Environment (HUCE)
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This study reports a method of electrochemical seawater splitting using forward osmosis technology, with no loss in efficiency while using earth-abundant metal catalysts.
Scalable, accessible, and affordable renewable energy demands commensurately scalable, accessible, and affordable energy storage. Foremost in this pursuit is hydrogen gas, which may be generated through electrochemical water splitting. Whereas conventional electrochemical water splitting relies upon molecularly pure water, recent efforts have shifted toward integrating natural water sources, the most abundant of which is seawater. Herein we report a means by which forward osmosis may be exploited to enable electrochemical seawater splitting with no loss in efficiency while using earth-abundant metal catalysts. By coupling these processes, we demonstrate an essential design element wherein both the anode and cathode are protected from the seawater source.
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