Novel branched sulfonated polyimide/molybdenum disulfide nanosheets composite membrane for vanadium redox flow battery application

Pu, Yang; Shu, Zhu; Wang, Pohui; Zhou, Yuqin; Pan, Yang; Xuan, Sensen; Zhang, Yaping; Zhang, Hongping

doi:10.1016/j.apsusc.2018.04.090

Cited by 49 publications

(19 citation statements)

References 52 publications

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“…However, the higher 884 sulfonatioin degree leads to higher swelling ratio and vanadium crossover. To improve the proton 885 conductivity of the low-cost SPPEK while maintaining low vanadium ions permeability, Wang [27], molybdenum disulfide nanosheets(MoS 2 -ns) [161], sulfonated molybdenum disulfide 902 (s-MoS 2 ) [162] and branched side-chain-type sulfonated polyimide membrane(6F-s-bSPI) [160]. 903 All of them are much more stable than Nafion 117 due to their low self-discharge rate.…”

Section: Ee 841 842mentioning

confidence: 99%

Recent development of membrane for vanadium redox flow battery applications: A review

et al. 2019

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Section: Ee 841 842mentioning

confidence: 99%

Recent development of membrane for vanadium redox flow battery applications: A review

et al. 2019

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“…The comparison of the proton conductivities of SPI-based composite membranes is presented in Table S3. [19][20][21][22][33][34][35][36][37][38][39] The proton conductivity of bSPI/s-MC-20 % composite membrane is superior to those of most of reported SPI-based composite membranes for VRFBs, which is very close to that of Nafion 115 membrane.…”

Section: Proton Conductivity Vanadium Ion Permeability and Proton Sementioning

confidence: 99%

“…[18] However, the proton conductivity of this bSPI membrane is still lower than that of Nafion membrane. According to the literatures, [19][20][21][22] the inorganic or organic materials could be introduced into SPI polymers by blending to prepare SPI-based composite membranes with improved proton conductivities and excellent VRFB performance.…”

Section: Introductionmentioning

confidence: 99%

Branched Sulfonated Polyimide/Sulfonated Methylcellulose Composite Membranes with Remarkable Proton Conductivity and Selectivity for Vanadium Redox Flow Batteries

et al. 2020

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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.

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“…As a result, alternative PEM‐based materials were investigated in order to be an alternative substitute for Nafion membranes. Sulfonated derivatives of poly(ether ether ketone), polyimides, polybenzimidazoles, poly(arylene ether sulfone)s, and polyvinylidene fluoride are most widely reported as an alternative for Nafion membranes. This is due to its low cost, readily available with suitable proton conductivity.…”

Section: Introductionmentioning

confidence: 99%

Highly branched poly(arylene ether)/surface functionalized fullerene‐based composite membrane electrolyte for DMFC applications

et al. 2019

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Summary Sulfonated branched polymer membranes have been gaining immense attention as the separator in energy‐related applications especially in fuel cells and flow batteries. Utilization of this branched polymer membranes in direct methanol fuel cell (DMFC) is limited because of large free volume and high methanol permeation. In the present work, sulfonated fullerene is used to improve the methanol barrier property of the highly branched sulfonated poly(ether ether ketone sulfone)s membrane without sacrificing its high proton conductivity. The existence of sulfonated fullerene with larger size and the usage of small quantity in the branched polymer matrix effectively prevent the methanol transportation channel across the membrane. The composite membrane with an optimized loading of sulfonated fullerene displays the highest proton conductivity of 0.332 S cm−1 at 80°C. Radical scavenging property of the fullerene improves the oxidative stability of the composite membrane. Composite membrane exhibits the peak power density of 74.38 mW cm−2 at 60°C, which is 30% larger than the commercial Nafion 212 membrane (51.78 mW cm−2) at the same condition. From these results, it clearly depicts that sulfonated fullerene‐incorporated branched polymer electrolyte membrane emerges as a promising candidate for DMFC applications.

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Novel branched sulfonated polyimide/molybdenum disulfide nanosheets composite membrane for vanadium redox flow battery application

Cited by 49 publications

References 52 publications

Recent development of membrane for vanadium redox flow battery applications: A review

Recent development of membrane for vanadium redox flow battery applications: A review

Branched Sulfonated Polyimide/Sulfonated Methylcellulose Composite Membranes with Remarkable Proton Conductivity and Selectivity for Vanadium Redox Flow Batteries

Highly branched poly(arylene ether)/surface functionalized fullerene‐based composite membrane electrolyte for DMFC applications

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