Preparation and Properties of Quaternized Polyimide Membranes for Electrocatalytic CO2 Reduction Application
The development of high cost-effective ion exchange membrane that can be applied in electrocatalytic CO2 reduction(ECR)is very crucial for efficient carbon resource utilization.Herein,a series of quaternized polyimide(QAPI)membranes were successfully prepared by introducing flexible alkyl side chain containing quaternary ammonium groups into synthesized polyimide backbone through ring-opening reaction.The chemical structure,morphology,physico-chemical properties and ECR performance of QAPI membranes were investigated in detail.Among all QAPI membranes,the QAPI-70 membrane exhibits the highest OH-conductivity and ECR performance.Besides,the QAPI-70 membrane has excellent stability in the ECR environment.These results demonstrate the QAPI-70 membrane has a promising application in electrocatalytic reduction of CO2 to CO.
MembranePolyimideQuatemizationElectrocatalytic CO2 reduction
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