Novel octopus shaped organic–inorganic composite membranes for PEMFCs

Liu, Qingting; Sun, Quan; Ni, Na; Luo, Fang; Zhang, Rong; Hu, Songqing; Bao, Xujin; Zhang, Fan; Zhao, Feng; Li, Xiao

doi:10.1016/j.ijhydene.2016.05.078

Cited by 18 publications

(16 citation statements)

References 36 publications

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“…The measurement and calculation for water uptake and PA DL of a membrane refer to previously published equations [48]. The water uptake measurement was performed by putting dried membranes (dried at 110 °C in a vacuum oven for 24 h until they reached a constant weight) in deionized water at room temperature for 24 h.…”

Section: Characterization Of Membranesmentioning

confidence: 99%

“…T g is the temperature of the primary phase transition or the temperature when whole polymer chain motion occurs, and the T g value of ABPBI is normally above 425 °C [6,48]. Thus, the peak of the tan δ curve in Fig.…”

Section: Dynamic Mechanical Propertiesmentioning

confidence: 99%

“…ABPBI is hydroscopic and thermally stable, and the weight loss below ≈ 470 °C is caused by the volatilization of H-bonded water and the thermal oxidation decomposition of ABPBI oligomers [48,68]. Therefore, the higher weight loss An acid leaching test following a previously reported method [49,69] was conducted to characterize the acid retention ability of PA doped membranes.…”

Section: Thermal Stabilitymentioning

confidence: 99%

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Poly(2,5-benzimidazole)/sulfonated sepiolite composite membranes with low phosphoric acid doping levels for PEMFC applications in a wide temperature range

Zhang

Liu

Xia

et al. 2019

Journal of Membrane Science

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To broaden the operating temperature range of phosphoric acid (PA) doped polybenzimidazole membrane-based proton exchange membrane fuel cells (PEMFCs) toward low temperatures, a novel series of poly(2,5-benzimidazole) (ABPBI)/sulfonated sepiolite (S-Sep) composite membranes (ABPBI/S-Sep) with low PA doping levels (DLs) were prepared via in-situ synthesis. The desirably enhanced mechanical, thermal, and oxidative stabilities of ABPBI/S-Sep composite membranes were achieved by constructing ABPBI chains arranged along the sepiolite (Sep) fibers 2 and acid-base crosslinks formed between S-Sep fibrous particles and ABPBI chains. Benefiting from the richness of high temperature stable bound water and the excellent water absorbability of Sep particles that enable the formation of additive proton conducting paths, the composite membranes retained bounded PA and achieved much higher proton conductivities under both anhydrous and hydrous conditions compared to PA-doped ABPBI membranes. Proton conductivity values above 0.01 S/cm at 40-90 °C/20-98% RH conditions and 90-180 °C/anhydrous conditions as well as peak power density of 0.13 and 0.23 W/cm 2 at 80 and 180 °C with 0% RH, respectively from the ABPBI/2S-Sep composite membrane are more holistic compared to Nafion at low temperatures and polybenzimidazole-based membranes at high temperatures, respectively. The excellent properties of ABPBI/S-Sep composite membranes suggest them as prospective candidates for PEMFCs applications in a wide temperature range.

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Section: Characterization Of Membranesmentioning

confidence: 99%

Section: Dynamic Mechanical Propertiesmentioning

confidence: 99%

Section: Thermal Stabilitymentioning

confidence: 99%

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Poly(2,5-benzimidazole)/sulfonated sepiolite composite membranes with low phosphoric acid doping levels for PEMFC applications in a wide temperature range

Zhang

Liu

Xia

et al. 2019

Journal of Membrane Science

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“…The author noted that the cross-linked hybrid membranes exhibited better performance in thermal stability and mechanical properties. Liu et al [119] synthesized a hybrid composite poly 2,5-benzimidazole (ABPBI/Octa ammonium polyhedral oligosilsesquioxane (AM-POSS) using ABPBI with AM-POSS. The hybrid composites (ABPBI/AM-POSS) developed a doping method through solvent casting in phosphoric acid (PA).…”

Section: Sulfonated-based Modified Membranesmentioning

confidence: 99%

A Review on Sulfonated Polymer Composite/Organic-Inorganic Hybrid Membranes to Address Methanol Barrier Issue for Methanol Fuel Cells

et al. 2019

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This paper focuses on a literature analysis and review of sulfonated polymer (s-Poly) composites, sulfonated organic, inorganic, and organic–inorganic hybrid membranes for polymer electrolyte membrane fuel cell (PEM) systems, particularly for methanol fuel cell applications. In this review, we focused mainly on the detailed analysis of the distinct segment of s-Poly composites/organic–inorganic hybrid membranes, the relationship between composite/organic– inorganic materials, structure, and performance. The ion exchange membrane, their size distribution and interfacial adhesion between the s-Poly composites, nanofillers, and functionalized nanofillers are also discussed. The paper emphasizes the enhancement of the s-Poly composites/organic–inorganic hybrid membrane properties such as low electronic conductivity, high proton conductivity, high mechanical properties, thermal stability, and water uptake are evaluated and compared with commercially available Nafion® membrane.

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“…The scanning electron microscope(SEM), water uptake, phosphoric acid doping level and proton conductivity measurement of ABPBI and ABPBI/S-Sep are referred to our previous work [7] . The XRD patterns of Sep and S-Sep are shown in Fig.…”

Section: Characterizationmentioning

confidence: 99%

Preparation and Properties of Poly(2,5-benzimidazole)/Sulfonated Sepiolite Composite Proton Exchange Membrane

Zhang¹,

Zhou²,

Fu³

et al. 2017

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Novel octopus shaped organic–inorganic composite membranes for PEMFCs

Cited by 18 publications

References 36 publications

Poly(2,5-benzimidazole)/sulfonated sepiolite composite membranes with low phosphoric acid doping levels for PEMFC applications in a wide temperature range

Poly(2,5-benzimidazole)/sulfonated sepiolite composite membranes with low phosphoric acid doping levels for PEMFC applications in a wide temperature range

A Review on Sulfonated Polymer Composite/Organic-Inorganic Hybrid Membranes to Address Methanol Barrier Issue for Methanol Fuel Cells

Preparation and Properties of Poly(2,5-benzimidazole)/Sulfonated Sepiolite Composite Proton Exchange Membrane

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