Electrochemical Conversion of CO<sub>2</sub> to CO Utilizing Quaternized Polybenzimidazole Anion Exchange Membrane
CO is a significant product of electrochemical CO<sub>2</sub> reduction (ECR) which can be mixed with H<sub>2</sub> to synthesize numerous hydrocarbons. Membranes, as separators, can significantly influence the performance of ECR. Herein, a series of quaternized polybenzimida...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/13/2/166 |
| _version_ | 1797619378400788480 |
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| author | Jingfeng Li Zeyu Cao Bo Zhang Xinai Zhang Jinchao Li Yaping Zhang Hao Duan |
| author_facet | Jingfeng Li Zeyu Cao Bo Zhang Xinai Zhang Jinchao Li Yaping Zhang Hao Duan |
| author_sort | Jingfeng Li |
| collection | DOAJ |
| description | CO is a significant product of electrochemical CO<sub>2</sub> reduction (ECR) which can be mixed with H<sub>2</sub> to synthesize numerous hydrocarbons. Membranes, as separators, can significantly influence the performance of ECR. Herein, a series of quaternized polybenzimidazole (QAPBI) anion exchange membranes with different quaternization degrees are prepared for application in ECR. Among all QAPBI membranes, the QAPBI-2 membrane exhibits optimized physico-chemical properties. In addition, the QAPBI-2 membrane shows higher a Faraday efficiency and CO partial current density compared with commercial Nafion 117 and FAA-3-PK-130 membranes, at −1.5 V (vs. RHE) in an H-type cell. Additionally, the QAPBI-2 membrane also has a higher Faraday efficiency and CO partial current density compared with Nafion 117 and FAA-3-PK-130 membranes, at −3.0 V in a membrane electrode assembly reactor. It is worth noting that the QAPBI-2 membrane also has excellent ECR stability, over 320 h in an H-type cell. This work illustrates a promising pathway to obtaining cost-effective membranes through a molecular structure regulation strategy for ECR application. |
| first_indexed | 2024-03-11T08:27:22Z |
| format | Article |
| id | doaj.art-788b1fed164249b091116706e62ed687 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-11T08:27:22Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-788b1fed164249b091116706e62ed6872023-11-16T22:02:15ZengMDPI AGMembranes2077-03752023-01-0113216610.3390/membranes13020166Electrochemical Conversion of CO<sub>2</sub> to CO Utilizing Quaternized Polybenzimidazole Anion Exchange MembraneJingfeng Li0Zeyu Cao1Bo Zhang2Xinai Zhang3Jinchao Li4Yaping Zhang5Hao Duan6State Key Laboratory of Environment-Friendly Energy Materials, Engineering Research Center of Biomass Materials (Ministry of Education), School of Materials Chemistry, Southwest University of Science and Technology, Mianyang 621010, ChinaState Key Laboratory of Environment-Friendly Energy Materials, Engineering Research Center of Biomass Materials (Ministry of Education), School of Materials Chemistry, Southwest University of Science and Technology, Mianyang 621010, ChinaState Key Laboratory of Environment-Friendly Energy Materials, Engineering Research Center of Biomass Materials (Ministry of Education), School of Materials Chemistry, Southwest University of Science and Technology, Mianyang 621010, ChinaState Key Laboratory of Environment-Friendly Energy Materials, Engineering Research Center of Biomass Materials (Ministry of Education), School of Materials Chemistry, Southwest University of Science and Technology, Mianyang 621010, ChinaState Key Laboratory of Environment-Friendly Energy Materials, Engineering Research Center of Biomass Materials (Ministry of Education), School of Materials Chemistry, Southwest University of Science and Technology, Mianyang 621010, ChinaSchool of Chemical Engineering, Sichuan University, Chengdu 610065, ChinaSichuan Langsheng New Energy Technology Co., Ltd., Suining 629200, ChinaCO is a significant product of electrochemical CO<sub>2</sub> reduction (ECR) which can be mixed with H<sub>2</sub> to synthesize numerous hydrocarbons. Membranes, as separators, can significantly influence the performance of ECR. Herein, a series of quaternized polybenzimidazole (QAPBI) anion exchange membranes with different quaternization degrees are prepared for application in ECR. Among all QAPBI membranes, the QAPBI-2 membrane exhibits optimized physico-chemical properties. In addition, the QAPBI-2 membrane shows higher a Faraday efficiency and CO partial current density compared with commercial Nafion 117 and FAA-3-PK-130 membranes, at −1.5 V (vs. RHE) in an H-type cell. Additionally, the QAPBI-2 membrane also has a higher Faraday efficiency and CO partial current density compared with Nafion 117 and FAA-3-PK-130 membranes, at −3.0 V in a membrane electrode assembly reactor. It is worth noting that the QAPBI-2 membrane also has excellent ECR stability, over 320 h in an H-type cell. This work illustrates a promising pathway to obtaining cost-effective membranes through a molecular structure regulation strategy for ECR application.https://www.mdpi.com/2077-0375/13/2/166membranequaternized polybenzimidazoleelectrocatalytic reductioncarbon dioxide |
| spellingShingle | Jingfeng Li Zeyu Cao Bo Zhang Xinai Zhang Jinchao Li Yaping Zhang Hao Duan Electrochemical Conversion of CO<sub>2</sub> to CO Utilizing Quaternized Polybenzimidazole Anion Exchange Membrane Membranes membrane quaternized polybenzimidazole electrocatalytic reduction carbon dioxide |
| title | Electrochemical Conversion of CO<sub>2</sub> to CO Utilizing Quaternized Polybenzimidazole Anion Exchange Membrane |
| title_full | Electrochemical Conversion of CO<sub>2</sub> to CO Utilizing Quaternized Polybenzimidazole Anion Exchange Membrane |
| title_fullStr | Electrochemical Conversion of CO<sub>2</sub> to CO Utilizing Quaternized Polybenzimidazole Anion Exchange Membrane |
| title_full_unstemmed | Electrochemical Conversion of CO<sub>2</sub> to CO Utilizing Quaternized Polybenzimidazole Anion Exchange Membrane |
| title_short | Electrochemical Conversion of CO<sub>2</sub> to CO Utilizing Quaternized Polybenzimidazole Anion Exchange Membrane |
| title_sort | electrochemical conversion of co sub 2 sub to co utilizing quaternized polybenzimidazole anion exchange membrane |
| topic | membrane quaternized polybenzimidazole electrocatalytic reduction carbon dioxide |
| url | https://www.mdpi.com/2077-0375/13/2/166 |
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