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

Neelakandan, Sivasubramaniyan; Liu, Dong; Wang, Li; Hu, Meishao; Wang, L.

doi:10.1002/er.4536

Cited by 26 publications

(19 citation statements)

References 56 publications

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“…Compared with the pure CS membrane, the hybrid membranes had a slightly higher initial thermal decomposition temperature with the doping of fillers (UiO‐66‐SCNT and UiO‐66‐SCNT@GO), indicating its good thermal stability. The results of TG demonstrate that the membranes meet the application requirements of PEMFC …”

Section: Resultsmentioning

confidence: 77%

“…Direct methanol fuel cell (DMFC) is a polymer electrolyte membrane fuel cell and widely used in portable energy and transportation equipment due to high power density, good switching capability, and low operating temperature . As a key part of DMFCs, the proton‐exchange membrane (PEM) is responsible for the proton transportation to ensure the normal operation of fuel cells .…”

Section: Introductionmentioning

confidence: 99%

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Carbon nanocomposites self‐assembly UiO‐66‐doped chitosan proton exchange membrane with enhanced proton conductivity

et al. 2020

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Summary One‐dimensional (1D) sodium ligninsulfonate functionalized carbon nanotubes (SCNT), two‐dimensional (2D) graphene oxide (GO), and three‐dimensional (3D) zirconium‐based metal‐organic frameworks (UiO‐66) are self‐assembled as filler materials for proton‐exchange membranes (PEMs) because of their potential for extending proton transport pathways. Herein, UiO‐66‐SCNT and UiO‐66‐SCNT@GO were prepared by a facile solvothermal synthesis and then the nanohybrid chitosan (CS) PEMs were fabricated via solution casting. The hybrid PEMs with higher ion exchange capacity than the pure CS membrane displayed higher proton conductivity and selectivity. The proton conductivity of nanohybrid membrane doped with 7 wt% UiO‐66‐SCNT@GO (CS/U‐S@GO‐7) was enhanced to 64 mS cm−1 at 70°C. Simultaneously, the selectivity was reached 19.4 × 104 S s cm−3 and was much higher than the pristine CS membrane (0.13 × 103 S s cm−3). Moreover, the mechanical properties of all composite membranes were significantly enhanced compared with that of the pure CS membrane. The results showed that our research provided a valuable strategy for designing high‐performance CS‐based PEMs in direct methanol fuel cell (DMFC). Highlights A simple and facile solvothermal synthesis was used to prepare UiO‐66‐SCNT@GO. UiO‐66‐SCNT@GO was introduced into chitosan (CS) matrix to optimize proton transport channels. CS‐based hybrid membranes exhibit high proton conductivity and selectivity. CS‐based hybrid membranes show low methanol permeability.

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Section: Resultsmentioning

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Carbon nanocomposites self‐assembly UiO‐66‐doped chitosan proton exchange membrane with enhanced proton conductivity

et al. 2020

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“…In particular branched sulfonated polymer prepared with bisphenol fluorine monomer showed excellent stability in Fenton's reagent with outstanding proton conductivity . The performance of the branched polymer membranes can be further improved by mixing with suitable filler …”

Section: Introductionmentioning

confidence: 99%

“…7 The performance of the branched polymer membranes can be further improved by mixing with suitable filler. 9,10 Metal-organic frameworks (MOF) have been used in various fields such as catalysis, separation, adsorption, and drug delivery, etc. [11][12][13][14] Recently, MOFs were utilized as proton conductors in the field of energy material.…”

Section: Introductionmentioning

confidence: 99%

Improving the performance of sulfonated polymer membrane by using sulfonic acid functionalized hetero‐metallic metal‐organic framework for DMFC applications

et al. 2019

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Summary Proton transport played a crucial part in the fuel cells, sensors, and batteries. The electrolyte used in fuel cells should possess high proton conductivity and good chemical stability. Herein, taking advantage of the high proton conductivity of metal‐organic framework (MOF) and the good chemical stability of branched polymers, a new heterometallic mediated MOF (Zr‐Cr‐SO3H) is synthesized and utilized as a filler in the highly branched sulfonated polymer (BSP). In addition, Zr‐SO3H MOF is also prepared for comparison. Transmission electron microscope study shows that the prepared MOF particles are spherical in size and interconnected through nanosheets. The optimized quantity of MOFs inside the polymer matrix improves the water sorption, mechanical property, and proton conductivity. The composite membranes display an improved open‐circuit voltage than the pristine BSP membrane. By comparing the Zr‐SO3H MOF incorporated composite membrane, Zr‐Cr‐SO3H MOF incorporated composite membranes display higher proton conductivity and peak power density in a single‐cell test. In particular, the single‐cell fabricated with Zr‐Cr‐SO3H MOF incorporated composite membrane is able to reach the peak power density of 64.6 mWcm−2 at 60°C, which is 26% greater than the Nafion 212 membrane. Furthermore, this work offers a new strategy for the utilization of hetero‐metal MOF as a filler for proton exchange membrane applications.

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“…In the article by Neelakandan et al, the second affiliation was missing. The corrected affiliations for all authors are shown above.…”

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confidence: 99%