Space‐Confined Synthesis of Sulfonated Covalent Organic Framework‒Polymer Membranes for Enhanced Osmotic Energy Conversion
Source abstract
Abstract
Abstract Osmotic energy, an infinite, clean energy source, can be efficiently harnessed through reverse electrodialysis using ion‐selective membranes. While polymeric membranes are excellent candidates due to their solution‐processability and scalability, their non‐uniform pore architecture and high resistance limit their power density output. Here, an in situ space‐confined synthesis strategy is proposed to fabricate sulfonated covalent organic frameworks within a sulfonated polymeric network, resulting in interconnected, well‐defined ion channels. This allows a maximum power density reaching up to 40.33 W m −2 under a 500‐fold salinity gradient and a real‐world power density of 14.84 W m −2 when extracting osmotic energy from natural seawater and river water. This study underscores the potential of space‐confined synthesis strategies in creating flexible and scalable ion‐selective membranes for efficient salinity gradient energy harvesting, marking a significant step toward their practical applications.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Covalent Organic Framework Applications · Fuel Cells and Related Materials · Membrane Separation Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Materials‐Oriented Chemical Engineering National Engineering Research Center for Special Separation Membrane Nanjing Tech University Nanjing China
Department of Chemical and Biological Engineering Monash University Clayton Victoria 3800 Australia
Key Laboratory of Bio‐Inspired Smart Interfacial Science and Technology Ministry of Education School of Chemistry Beihang University Beijing 100191 China
Beijing Advanced Innovation Center for Biomedical Engineering Beihang University Beijing 100191 China
CAS Key Laboratory of Bio‐inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China
Funding
National Natural Science Foundation of China · Higher Education Discipline Innovation Project · Australian Research Council
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