Design Criteria, Operating Conditions, and Nickel-Iron Hydroxide Catalyst Materials for Selective Seawater Electrolysis

Seawater is an abundant water resource on our planet and its direct electrolysis has the advantage that it would not compete with activities demanding fresh water. Oxygen selectivity is challenging when performing seawater electrolysis owing to competing chloride oxidation reactions. In this work we...

Full description

Saved in:
Bibliographic Details
Published in:ChemSusChem 2016-05, Vol.9 (9), p.962-972
Main Authors: Dionigi, Fabio, Reier, Tobias, Pawolek, Zarina, Gliech, Manuel, Strasser, Peter
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Chlorides - chemistry
Criteria
Design criteria
electrocatalysis
Electrolysis
Hydrogen-Ion Concentration
Hydroxides
Hydroxides - chemistry
Iron - chemistry
Nickel - chemistry
nickel-iron hydroxide
Oxygen
oxygen evolution reaction
Sea water
Seawater
Seawater - chemistry
Selectivity
water splitting
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Seawater is an abundant water resource on our planet and its direct electrolysis has the advantage that it would not compete with activities demanding fresh water. Oxygen selectivity is challenging when performing seawater electrolysis owing to competing chloride oxidation reactions. In this work we propose a design criterion based on thermodynamic and kinetic considerations that identifies alkaline conditions as preferable to obtain high selectivity for the oxygen evolution reaction. The criterion states that catalysts sustaining the desired operating current with an overpotential
ISSN:1864-5631
1864-564X
DOI:10.1002/cssc.201501581