Recent progress of strategies for enhancing ion transport in anion exchange membranes
Alkaline ion membranes(anion exchange membranes)are key materials in electrochemical processes such as water electrolysis to produce hydrogen and CO2 reduction.They have important application value in transferring ions,separating anode and cathode,and blocking gas penetration.Originating from electrodialysis process,most commercial anion exchange membranes have low conductivity,which can't meet the demand of high current density and high stability in electrochemical process.For demands of high flux,low resistance and low energy consumption in water electrolysis,this work investigates ions transport in membranes,combined with features of hydroxide ions,analyzes the structural characteristics of anion exchange membranes that meet the comprehensive performance requirements,and focuses on the strategies of enhancing ion transport.The latest research are summarized,and specific strategies such as cross-linking,directional alignment,microphase separations and micropore construction are discussed,indicating the direction of high-performance anion exchange membranes,and promoting the development of electrochemical progresses such as water electrolysis.
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维普
