Polybenzimidazole anionic exchange membrane with hydrophobic clusters for efficient electrochemical CO_(2)reductionOA
Specific anion exchange membranes(AEMs)are vital to highly efficient electrochemical CO_(2)reduction(ECR),which is a promising choice for carbon neutrality.However,the unexpected trade-off effect originating from the ion conductivity and the hydrogen evolution reaction(HER)is still a great challenge.Herein,AEMs with hydrophobic clusters distribution in hydrophilic domain were designed and prepared by special ternary-polymerization polybenzimidazole(TP-PBI).The hydrophilic domain contributed to high ionic conductivity and dispersed hydrophobic clusters inhibited the membrane swelling and consequently the HER.As a result,an increase of 157%was achieved in ionic conductivity compared with that of OPBI and the prepared TP-PBI membranes exhibit CO Faradaic efficiency(FEco)as high as 96.2%,outstanding in situ durability for 24 h at 100 mA cm^(-2).Such TP-PBI membranes throw new light on the development of AEMs for highly efficient ECR.
Zuyu Li;Pingxia Zhang;Min He;Lihua Wang;Zhi Qiu;Yanbin Yun
Key Laboratory of Science and Technology on High-tech Polymer Materials,Beijing National Laboratory for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing,100190,China College of Environmental Science and Engineering,Beijing Forestry University,Beijing,100083,ChinaKey Laboratory of Science and Technology on High-tech Polymer Materials,Beijing National Laboratory for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing,100190,ChinaKey Laboratory of Science and Technology on High-tech Polymer Materials,Beijing National Laboratory for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing,100190,ChinaKey Laboratory of Science and Technology on High-tech Polymer Materials,Beijing National Laboratory for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing,100190,ChinaKey Laboratory of Science and Technology on High-tech Polymer Materials,Beijing National Laboratory for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing,100190,ChinaCollege of Environmental Science and Engineering,Beijing Forestry University,Beijing,100083,China
化学化工
Ternary-polymerization polybenzimidazoleHydrophobic fluorine clustersAnion exchange membraneElectrochemical CO_(2)reduction
《Green Energy & Environment》 2026 (5)
P.1349-1361,13
supported by the National Key R&D Program of China(2023YFB4006200)The Junior Fellow Program of BeiJing National Laboratory for Molecular Sciences(2024BMS20152).
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