Graphene Oxide-Intercalated Montmorillonite Layered Stack Incorporated into Poly(2,5-Benzimidazole) for Preparing Wide-Temperature Proton Exchange Membranes

Wang, Bei; Ling, Zhiwei; Li, Ningning; Liu, Qingting; Fu, Xudong; Zhang, Rong; Hu, Shengfei; Meng, Ziyi; Zhao, Feng; Li, Xiao

doi:10.1021/acsanm.3c04409

Cited by 7 publications

(1 citation statement)

References 59 publications

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“…The [HMIM]Cl-doped 3 wt % SABPBI composite membrane displayed the highest proton conductivity of 0.04 S cm –1 at 220 °C. Moreover, the ionic conductivity of PEM will be increased by adding fillers to the polymer matrix. − Recently, a polymer composite membrane with good proton conductivity has been developed by adding fillers like metal–organic frameworks (MOFs), covalent organic frameworks, metal oxides, ionic liquids, carbon nanotubes, and heteropolyacids …”

Section: Introductionmentioning

confidence: 99%

Sulfonated Cobalt Metal–Organic Framework Embedded Mixed Matrix Membrane towards Fuel-Cell Applications

Moorthy,

Deivanayagam

2024

ACS Appl. Mater. Interfaces

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New strategies for enhancement of the fuel-cell performance of a poly(2,5-benzimidazole) (ABPBI) membrane loaded with a functionalized cobalt-based metal−organic framework (MOF) for H 2 −O 2 fuel cells. ABPBI was prepared using the polycondensation method, and various proportions of sulfonated cobalt MOF (sCo-MOF) were incorporated into ABPBI to fabricate a proton-exchange membrane (PEM). Later, the fabricated membranes were soaked in 1 M sulfuric acid to produce sulfonated PEMs. The developed composite membranes had increased proton conductivity, tensile strength, physicochemical properties, and fuelcell performance compared to the sulfonated ABPBI (sABPBI) membrane. A membrane embedded with 4 wt % sCo-MOF shows higher water uptake and ion-exchange capacity values of 23.25% and 2.89 mequiv g −1 , respectively. The membrane electrode assemblies were fabricated to perform unit-cell tests for both sABPBI and 4 wt % sCo-MOF/sABPBI membranes. The 4 wt % sCo-MOF-loaded sABPBI membrane demonstrated good unit-cell performance in the fuelcell test, with a power density of 415.8 mW cm −2 at 80 °C, superior to the pristine sABPBI membrane's power density of 178.6 mW cm −2 .

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Section: Introductionmentioning

confidence: 99%

Sulfonated Cobalt Metal–Organic Framework Embedded Mixed Matrix Membrane towards Fuel-Cell Applications

Moorthy,

Deivanayagam

2024

ACS Appl. Mater. Interfaces

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Probing the Efficiency of PPMG-Based Composite Electrolytes for Applications of Proton Exchange Membrane Fuel Cell

Ahmed,

Altaf,

Khan

et al. 2024

Trans. Tianjin Univ.

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PPMG-based composite electrolytes were fabricated via the solution method using the polyvinyl alcohol and polyvinylpyrrolidone blend reinforced with various contents of sulfonated inorganic filler. Sulfuric acid was employed as the sulfonating agent to functionalize the external surface of the inorganic filler, i.e., graphene oxide. The proton conductivities of the newly prepared proton exchange membranes (PEMs) were increased by increasing the temperature and content of sulfonated graphene oxide (SGO), i.e., ranging from 0.025 S/cm to 0.060 S/cm. The induction of the optimum level of SGO is determined to be an excellent route to enhance ionic conductivity. The single-cell performance test was conducted by sandwiching the newly prepared PEMs between an anode (0.2 mg/cm2 Pt/Ru) and a cathode (0.2 mg/cm2 Pt) to prepare membrane electrode assemblies, followed by hot pressing under a pressure of approximately 100 kg/cm2 at 60 °C for 5–10 min. The highest power densities achieved with PPMG PEMs were 14.9 and 35.60 mW/cm2 at 25 °C and 70 °C, respectively, at ambient pressure with 100% relative humidity. Results showed that the newly prepared PEMs exhibit good electrochemical performance. The results indicated that the prepared composite membrane with 6 wt% filler can be used as an alternative membrane for applications of high-performance proton exchange membrane fuel cell.

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Sulfonation modification of halloysite nanotubes for the in-situ synthesis of polybenzimidazole-based composite proton exchange membranes in wide-temperature range applications

Ling,

Wang,

Wang

et al. 2024

European Polymer Journal

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Graphene Oxide-Intercalated Montmorillonite Layered Stack Incorporated into Poly(2,5-Benzimidazole) for Preparing Wide-Temperature Proton Exchange Membranes

Cited by 7 publications

References 59 publications

Sulfonated Cobalt Metal–Organic Framework Embedded Mixed Matrix Membrane towards Fuel-Cell Applications

Sulfonated Cobalt Metal–Organic Framework Embedded Mixed Matrix Membrane towards Fuel-Cell Applications

Probing the Efficiency of PPMG-Based Composite Electrolytes for Applications of Proton Exchange Membrane Fuel Cell

Sulfonation modification of halloysite nanotubes for the in-situ synthesis of polybenzimidazole-based composite proton exchange membranes in wide-temperature range applications

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