Related Experiment Video
Updated: Jul 20, 2025
10:00
Hydrogen Production and Utilization in a Membrane Reactor
Published on: March 10, 2023
2.4K
Recent advances in direct seawater splitting for producing hydrogen
Shao-Wen Xu1, Jianyi Li1, Nan Zhang1
1State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China. xipx@lzu.edu.cn.
Chemical Communications (Cambridge, England)
|August 1, 2023
Summary
Direct seawater electrolysis offers sustainable hydrogen production, overcoming challenges like side reactions and corrosion. This review details advancements in catalysts, electrolyzers, and membranes for efficient seawater splitting.
Area of Science:
- Electrocatalysis
- Renewable Energy
- Materials Science
Background:
- Current water electrolysis relies on freshwater, exacerbating global water scarcity.
- Seawater is an abundant resource for large-scale hydrogen production.
- Direct seawater electrolysis faces challenges from side reactions and electrode corrosion.
Purpose of the Study:
- To review the principles of seawater electrolysis.
- To discuss recent advancements in direct seawater electrolysis systems.
- To highlight challenges and opportunities for scaling up seawater splitting.
Main Methods:
- Catalyst design for improved efficiency and stability.
- Electrolyzer assembly optimizing performance in saline environments.
- Membrane selection and engineering to mitigate ion crossover and degradation.
- Electrolyte engineering to manage seawater composition effects.
Main Results:
- Progress in developing robust electrocatalysts resistant to seawater components.
- Innovations in electrolyzer configurations for enhanced durability and performance.
- Strategies for membrane and electrolyte optimization to suppress parasitic reactions.
- Demonstration of improved efficiency and stability in direct seawater electrolysis systems.
Conclusions:
- Direct seawater electrolysis is a viable route for sustainable hydrogen fuel.
- Continued research in catalyst, membrane, and system design is crucial.
- Addressing corrosion and side reactions is key to large-scale implementation.
More Related Videos
Related Concept Videos
02:13Reduction of Alkenes: Catalytic Hydrogenation
12.2K
Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
12.2K
00:26Hydrogen Bonds
121.5K
Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
121.5K
02:17Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
3.4K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.4K
01:32Chemiosmosis
99.6K
Oxidative phosphorylation is a highly efficient process that generates large amounts of adenosine triphosphate (ATP), the basic unit of energy that drives many cellular processes. Oxidative phosphorylation involves two processes— the electron transport chain and chemiosmosis.
Electron Transport Chain
The electron transport chain involves a series of protein complexes on the inner mitochondrial membrane that undergo a series of redox reactions. At the end of this chain, the electrons...
Electron Transport Chain
The electron transport chain involves a series of protein complexes on the inner mitochondrial membrane that undergo a series of redox reactions. At the end of this chain, the electrons...
99.6K
01:15Hydrolysis
105.8K
Overview
Hydrolysis is a chemical reaction in which the addition of water breaks down a polymer into its simpler monomer units. For example, peptides break into amino acids, carbohydrates into simple sugars, and DNA into nucleotides. Enzymes often facilitate these processes.
Hydrolysis Reverses Dehydration Synthesis
Complex carbohydrates can be broken down by breaking the bonds between individual sugar units. The reaction breaks a glycosidic bond as water is added to the compound. The...
Hydrolysis is a chemical reaction in which the addition of water breaks down a polymer into its simpler monomer units. For example, peptides break into amino acids, carbohydrates into simple sugars, and DNA into nucleotides. Enzymes often facilitate these processes.
Hydrolysis Reverses Dehydration Synthesis
Complex carbohydrates can be broken down by breaking the bonds between individual sugar units. The reaction breaks a glycosidic bond as water is added to the compound. The...
105.8K