Branched Sulfonated Polyimide/Sulfonated Methylcellulose Composite Membranes with Remarkable Proton Conductivity and Selectivity for Vanadium Redox Flow Batteries
Abstract A series of branched sulfonated polyimide (bSPI)/sulfonated methylcellulose (s‐MC) composite membranes composed of a designed and synthesized bSPI polymer and functionalized s‐MC are prepared by using a facile solution casting method for vanadium redox flow batteries (VRFBs). Among all bSPI...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2020-02-01
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| Series: | ChemElectroChem |
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| Online Access: | https://doi.org/10.1002/celc.201901887 |
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| author | Jun Long Hongyan Yang Yanlin Wang Wenjie Xu Jun Liu Huan Luo Dr. Jinchao Li Prof. Yaping Zhang Dr. Hongping Zhang |
| author_facet | Jun Long Hongyan Yang Yanlin Wang Wenjie Xu Jun Liu Huan Luo Dr. Jinchao Li Prof. Yaping Zhang Dr. Hongping Zhang |
| author_sort | Jun Long |
| collection | DOAJ |
| description | Abstract A series of branched sulfonated polyimide (bSPI)/sulfonated methylcellulose (s‐MC) composite membranes composed of a designed and synthesized bSPI polymer and functionalized s‐MC are prepared by using a facile solution casting method for vanadium redox flow batteries (VRFBs). Among all bSPI/s‐MC composite membranes, the optimized bSPI/s‐MC‐20 % composite membrane has the best proton selectivity of 2.45×105 S min cm−3, which is 14.4 times as high as the Nafion 115 membrane. The bSPI/s‐MC‐20 % composite membrane possesses superior proton conductivity compared to most reported SPI‐based composite membranes for VRFBs. The VRFB with a bSPI/s‐MC‐20 % composite membrane shows excellent battery efficiencies (CE=99.2–98.0 %, EE=66.3–77.6 %) and capacity retention (73.3–47.2 %). Moreover, the cost of the bSPI/s‐MC‐20 % composite membrane is only a quarter of that of a commercial Nafion 115 membrane. This work develops a new strategy to fabricate cheap bSPI‐based composite membranes by introducing a suitable functionalized biomass material. |
| format | Article |
| id | doaj-art-03d779bffa2c409f8358e065bb0c20da |
| institution | Kabale University |
| issn | 2196-0216 |
| language | English |
| publishDate | 2020-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | ChemElectroChem |
| spelling | doaj-art-03d779bffa2c409f8358e065bb0c20da2025-08-20T03:39:58ZengWiley-VCHChemElectroChem2196-02162020-02-017493794510.1002/celc.201901887Branched Sulfonated Polyimide/Sulfonated Methylcellulose Composite Membranes with Remarkable Proton Conductivity and Selectivity for Vanadium Redox Flow BatteriesJun Long0Hongyan Yang1Yanlin Wang2Wenjie Xu3Jun Liu4Huan Luo5Dr. Jinchao Li6Prof. Yaping Zhang7Dr. Hongping Zhang8State Key Laboratory of Environment-friendly Energy Materials School of Materials Science and Engineering Southwest University of Science and Technology Mianyang 621010 P.R.ChinaState Key Laboratory of Environment-friendly Energy Materials School of Materials Science and Engineering Southwest University of Science and Technology Mianyang 621010 P.R.ChinaState Key Laboratory of Environment-friendly Energy Materials School of Materials Science and Engineering Southwest University of Science and Technology Mianyang 621010 P.R.ChinaState Key Laboratory of Environment-friendly Energy Materials School of Materials Science and Engineering Southwest University of Science and Technology Mianyang 621010 P.R.ChinaState Key Laboratory of Environment-friendly Energy Materials School of Materials Science and Engineering Southwest University of Science and Technology Mianyang 621010 P.R.ChinaState Key Laboratory of Environment-friendly Energy Materials School of Materials Science and Engineering Southwest University of Science and Technology Mianyang 621010 P.R.ChinaState Key Laboratory of Environment-friendly Energy Materials School of Materials Science and Engineering Southwest University of Science and Technology Mianyang 621010 P.R.ChinaState Key Laboratory of Environment-friendly Energy Materials School of Materials Science and Engineering Southwest University of Science and Technology Mianyang 621010 P.R.ChinaState Key Laboratory of Environment-friendly Energy Materials School of Materials Science and Engineering Southwest University of Science and Technology Mianyang 621010 P.R.ChinaAbstract A series of branched sulfonated polyimide (bSPI)/sulfonated methylcellulose (s‐MC) composite membranes composed of a designed and synthesized bSPI polymer and functionalized s‐MC are prepared by using a facile solution casting method for vanadium redox flow batteries (VRFBs). Among all bSPI/s‐MC composite membranes, the optimized bSPI/s‐MC‐20 % composite membrane has the best proton selectivity of 2.45×105 S min cm−3, which is 14.4 times as high as the Nafion 115 membrane. The bSPI/s‐MC‐20 % composite membrane possesses superior proton conductivity compared to most reported SPI‐based composite membranes for VRFBs. The VRFB with a bSPI/s‐MC‐20 % composite membrane shows excellent battery efficiencies (CE=99.2–98.0 %, EE=66.3–77.6 %) and capacity retention (73.3–47.2 %). Moreover, the cost of the bSPI/s‐MC‐20 % composite membrane is only a quarter of that of a commercial Nafion 115 membrane. This work develops a new strategy to fabricate cheap bSPI‐based composite membranes by introducing a suitable functionalized biomass material.https://doi.org/10.1002/celc.201901887vanadium redox flow batteriesbranched sulfonated polyimidecomposite membraneproton conductivitycycling stability |
| spellingShingle | Jun Long Hongyan Yang Yanlin Wang Wenjie Xu Jun Liu Huan Luo Dr. Jinchao Li Prof. Yaping Zhang Dr. Hongping Zhang Branched Sulfonated Polyimide/Sulfonated Methylcellulose Composite Membranes with Remarkable Proton Conductivity and Selectivity for Vanadium Redox Flow Batteries ChemElectroChem vanadium redox flow batteries branched sulfonated polyimide composite membrane proton conductivity cycling stability |
| title | Branched Sulfonated Polyimide/Sulfonated Methylcellulose Composite Membranes with Remarkable Proton Conductivity and Selectivity for Vanadium Redox Flow Batteries |
| title_full | Branched Sulfonated Polyimide/Sulfonated Methylcellulose Composite Membranes with Remarkable Proton Conductivity and Selectivity for Vanadium Redox Flow Batteries |
| title_fullStr | Branched Sulfonated Polyimide/Sulfonated Methylcellulose Composite Membranes with Remarkable Proton Conductivity and Selectivity for Vanadium Redox Flow Batteries |
| title_full_unstemmed | Branched Sulfonated Polyimide/Sulfonated Methylcellulose Composite Membranes with Remarkable Proton Conductivity and Selectivity for Vanadium Redox Flow Batteries |
| title_short | Branched Sulfonated Polyimide/Sulfonated Methylcellulose Composite Membranes with Remarkable Proton Conductivity and Selectivity for Vanadium Redox Flow Batteries |
| title_sort | branched sulfonated polyimide sulfonated methylcellulose composite membranes with remarkable proton conductivity and selectivity for vanadium redox flow batteries |
| topic | vanadium redox flow batteries branched sulfonated polyimide composite membrane proton conductivity cycling stability |
| url | https://doi.org/10.1002/celc.201901887 |
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