Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Hydrogen production with seawater-resilient bipolar membrane electrolyzers

Journal Article · · Joule
 [1];  [1];  [1];  [2];  [2];  [1];  [1];  [1];  [3];  [4];  [2];  [3];  [1]
  1. Stanford University, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). SUNCAT Center for Interface Science and Catalysis
  2. University of Oregon, Eugene, OR (United States)
  3. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). SUNCAT Center for Interface Science and Catalysis
  4. Manchester Metropolitan University (United Kingdom)

Generation of H2 and O2 from untreated water sources represents a promising alternative to ultrapure water required in contemporary proton exchange membrane-based electrolysis. Bipolar membrane-based devices, often used in electrodialysis and CO2 electrolysis, facilitate impure water electrolysis via the simultaneous mediation of ion transport and enforcement of advantageous microenvironments. Herein, we report their application in direct seawater electrolysis; we show that upon introduction of ionic species such as Na+ and Cl- from seawater, bipolar membrane electrolyzers limit the oxidation of Cl- to corrosive OCl- at the anode to a Faradaic efficiency (FE) of 0.005%, while proton exchange membrane electrolyzers under comparable operating conditions exhibit up to 10% FE to Cl oxidation. In conclusion, the effective mitigation of Cl- oxidation by bipolar membrane electrolyzers underpins their ability to enable longer-term seawater electrolysis than proton exchange membrane assemblies by a factor of 140, suggesting a path to durable seawater electrolysis.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Hydrogen Fuel Cell Technologies Office (HFTO); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB); US Department of the Navy, Office of Naval Research (ONR); National Science Foundation (NSF)
Grant/Contract Number:
AC02-76SF00515; EE0008841
OSTI ID:
2005382
Alternate ID(s):
OSTI ID: 2997083
Journal Information:
Joule, Journal Name: Joule Journal Issue: 4 Vol. 7; ISSN 2542-4351
Publisher:
Elsevier - Cell PressCopyright Statement
Country of Publication:
United States
Language:
English

References (40)

Learning Curve for Seawater Reverse Osmosis Desalination Plants: Capital Cost Trend of the Past, Present, and Future journal December 2017
Anode Catalysts in Anion‐Exchange‐Membrane Electrolysis without Supporting Electrolyte: Conductivity, Dynamics, and Ionomer Degradation journal July 2022
Current Challenges in Catalyst Development for PEM Water Electrolyzers journal January 2020
Design Criteria, Operating Conditions, and Nickel-Iron Hydroxide Catalyst Materials for Selective Seawater Electrolysis journal March 2016
Exploring the Interface of Porous Cathode/Bipolar Membrane for Mitigation of Inorganic Precipitates in Direct Seawater Electrolysis journal April 2022
The Determination of Free Chlorine journal November 1934
The electroneutrality approximation in electrochemistry journal February 2011
Mechanism of chlorine evolution on oxide anodes study of pH effects journal August 1987
Precipitate formation during sea water electrolysis journal January 1982
Technology feasibility and economic viability of an innovative integrated ceramic membrane bioreactor and reverse osmosis process for producing ultrapure water from municipal wastewater journal November 2019
Direct seawater electrolysis via synergistic acidification by inorganic precipitation and proton flux from bipolar membrane journal February 2022
Seawater electrolysis technologies for green hydrogen production: challenges and opportunities journal June 2022
Cell failure mechanisms in PEM water electrolyzers journal November 2012
Membrane Electrolyzers for Impure-Water Splitting journal December 2020
Water electrolysis: Direct from the sea or not to be? journal August 2021
Investigations on degradation of the long-term proton exchange membrane water electrolysis stack journal December 2014
Inherent Acidity of Perfluorosulfonic Acid Ionomer Dispersions and Implications for Ink Aggregation journal July 2018
Reduced Ion Crossover in Bipolar Membrane Electrolysis via Increased Current Density, Molecular Size, and Valence journal May 2020
Understanding Multi-Ion Transport Mechanisms in Bipolar Membranes journal November 2020
Performance and Durability of Pure-Water-Fed Anion Exchange Membrane Electrolyzers Using Baseline Materials and Operation journal August 2021
Selectivity Trends Between Oxygen Evolution and Chlorine Evolution on Iridium-Based Double Perovskites in Acidic Media journal July 2019
Synergistic Electrochemical CO 2 Reduction and Water Oxidation with a Bipolar Membrane journal November 2016
Direct Electrolytic Splitting of Seawater: Opportunities and Challenges journal March 2019
Mass transport of electrolytes in membranes. 2. Determination of sodium chloride equilibrium and transport parameters for Nafion journal May 1984
Hypochlorite Ion Decomposition:  Effects of Temperature, Ionic Strength, and Chloride Ion journal February 1999
Benchmarking Heterogeneous Electrocatalysts for the Oxygen Evolution Reaction journal October 2013
MnO x /IrO x as Selective Oxygen Evolution Electrocatalyst in Acidic Chloride Solution journal July 2018
Design principles for water dissociation catalysts in high-performance bipolar membranes journal July 2022
Poly(aryl piperidinium) membranes and ionomers for hydroxide exchange membrane fuel cells journal April 2019
Efficient direct seawater electrolysers using selective alkaline NiFe-LDH as OER catalyst in asymmetric electrolyte feeds journal January 2020
Durability of anion exchange membrane water electrolyzers journal January 2021
Using a vapor-fed anode and saline catholyte to manage ion transport in a proton exchange membrane electrolyzer journal January 2021
Increased Donnan exclusion in charged polymer networks at high salt concentrations journal January 2022
The nature of proton transport in fully hydrated Nafion® journal February 2002
Continuous electrochemical water splitting from natural water sources via forward osmosis journal February 2021
Accelerating water dissociation in bipolar membranes and for electrocatalysis journal July 2020
Degradation of Proton Exchange Membrane (PEM) Water Electrolysis Cells: Looking Beyond the Cell Voltage Increase journal January 2019
Is Renewable Energy-Powered Desalination a Viable Solution for Water Stressed Regions? A Case Study in Algarve, Portugal journal December 2019
Properties of Anion Exchange Membranes with a Focus on Water Electrolysis journal October 2022
An Economic Assessment of the Global Potential for Seawater Desalination to 2050 journal October 2017