Polybenzimidazole-crosslinked poly(vinylbenzyl chloride) with quaternary 1,4-diazabicyclo (2.2.2) octane groups as high-performance anion exchange membrane for fuel cells

Lu, Wenxian; Zhang, Geng; Li, Jin; Hao, Jinkai; Wei, Feng; Li, Wenhui; Zhang, Jiying; Shao, Zhigang; Yi, Baolian

doi:10.1016/j.jpowsour.2015.07.048

Cited by 100 publications

(73 citation statements)

References 58 publications

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“…To ensure that the conversion of the AEM in OH – form to AEM in HCO 3 /CO 3 – form don't result due to atmospheric CO 2 during the WU, the water used for this study was buffered to pH 7 using a mixture of KH 2 PO 4 /K 2 HPO 4 then the solution was bubbled with Argon gas to make sure CO 2 is complexly removed from water during the measurements …”

Section: Methodsmentioning

confidence: 99%

“…The dried and weighed membranes (in OH – form) was soaked and saturated in Na 2 SO 4 for 24 h. Back‐titration was used to titrate the OH – in the solution using phenolphthalein as an indicator. The above formula was used to calculate the IEC (mmol g −1 ).…”

Section: Methodsmentioning

confidence: 99%

“…Anion exchange membranes (AEMs) which only allow the passage of hydroxide ion (OH – ) when cation ions head group (i.e., 

{NR}_{3}^{+}

, NR 2 H + , 

{SR}_{2}^{+}

) are attached on their backbone are seen as a replacement of Nafion‐based proton exchange membrane fuel cells (PEMFs) because of their promising properties. AAEMFCs offer lower activation loss, lower fuel cross over, and decreased oxidant reduction over‐potential at high pH, thereby increasing the fuel cell efficiency . Within the AAEMFCs, the key area of the fuel cell is the AEM.…”

Section: Introductionmentioning

confidence: 99%

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Quaternized poly(2.6 dimethyl‐1.4 phenylene oxide)/polysulfone blend composite membrane doped with ZnO‐nanoparticles for alkaline fuel cells

Msomi

Nonjola

Ndungu

et al. 2017

J of Applied Polymer Sci

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A series of quaternized poly(2.6 dimethyl‐1.4 phenylene oxide)/polysulfone (QPPO/PSF) blend anion exchange membrane (AEM) were successfully fabricated and characterized for alkaline fuel cell application. Zinc oxide (ZnO) nanoparticles were introduced in the polymer matrix to enhance the intrinsic properties of the AEM. To confirm successful fabrication, Fourier‐transform infrared spectroscopy and nuclear magnetic resonance (1H‐NMR) were used. The membrane properties were enhanced by the addition of ZnO nanoparticles. The addition of ZnO nanoparticles resulted to a higher ion exchange capacity (IEC) of 3.72 mmol g−1, increase of ion conductivity (IC) up to 52.34 mS cm−1 at 80 °C, enhancement of water uptake, and reduced methanol permeability. The QPPO/PSF/2% ZnO composite retained over 80% of its initial IC at room temperature and also retained over 50% of its initial IC at 80 °C when evaluated for alkaline stability. The maximum power output reached for the membrane electrode assembly constructed with QPPO/PSF/2%ZnO was 69 mW cm−2 at room temperature, which is about three times more than the parent QPPO membrane. The above results indicate that QPPO/PSF/ZnO is a good candidate as an AEM for fuel cell application. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45959.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…Anion exchange membranes (AEMs) which only allow the passage of hydroxide ion (OH – ) when cation ions head group (i.e., 

{NR}_{3}^{+}

, NR 2 H + , 

{SR}_{2}^{+}

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Quaternized poly(2.6 dimethyl‐1.4 phenylene oxide)/polysulfone blend composite membrane doped with ZnO‐nanoparticles for alkaline fuel cells

Msomi

Nonjola

Ndungu

et al. 2017

J of Applied Polymer Sci

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“…Anion exchange membrane fuel cells (AEMFCs) have received more and more attention because of their superiority to proton exchange membrane fuel cells (PEMFCs), especially the use of non-precious metals, fast electrode kinetics and excellent corrosion resistance of metal materials under basic conditions and so on. [1][2][3][4] As a key component in an AEMFC, the anion exchange membrane (AEM) faces a trade-off between ionic conductivity, mechanical strength and chemical stability, 3,5 which is more serious than that in proton exchange membranes owing to the inherently lower conductivity of OH À (the conductivity ratio of H + /OH À is about 1.76 (ref. 6)) and easy degradation of quaternary ammonium (QA) cationic groups.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of N1-butyl substituted 4,5-dimethyl-imidazole based crosslinked anion exchange membranes for fuel cells

et al. 2017

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“…Another approach was that used by Lu et al [55]. They used PBI to react with poly(vinylbenzyl chloride) (PVBC), a polymer commonly used by other groups as for example Varcoe et al in their grafted PTFE membranes [56,57].…”

Section: Anion Exchange Membrane Fuel Cells (Aemfcs)mentioning

confidence: 99%

Benzimidazole as Solid Electrolyte Material for Fuel Cells

Herranz¹,

Ocón²

2019

Chemistry and Applications of Benzimidazole and Its Derivatives

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This chapter is focused in the application of benzimidazole, mainly in the form of poly[2,2 0-(m-phenylene)-5,5 0-bisbenzimidazole] (PBI) and poly(2,5-benzimidazole) (ABPBI), in the fuel cell technology. A short introduction is given of the fuel cell principles, explaining both the theory and the high importance of this technology. PBI and ABPBI are used in a certain type of fuel cells: the polymer electrolyte fuel cells and are key materials in the composition of some of the electrolyte membranes used. Commercially available membranes composed of PBI are indicated in order to give an overview of their potential performance. The synthesis of the polymers is explained. Moreover, the preparation of the different kinds of membranes, both in proton exchange membrane fuel cells (PEMFCs) and anion exchange membrane fuel cells (AEMFCs) is studied. A deep description is given about the properties that make this family of compounds so interesting for the fuel cell technology as well as an how these polymers have been characterized with the corresponding analysis. The comparison with other ion exchange membranes is also discussed. Special attention will be given to the state of the art of different kinds of PBI/ABPBI fuel cell electrolyte membranes, in which our group and others are working nowadays.

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Polybenzimidazole-crosslinked poly(vinylbenzyl chloride) with quaternary 1,4-diazabicyclo (2.2.2) octane groups as high-performance anion exchange membrane for fuel cells

Cited by 100 publications

References 58 publications

Quaternized poly(2.6 dimethyl‐1.4 phenylene oxide)/polysulfone blend composite membrane doped with ZnO‐nanoparticles for alkaline fuel cells

Quaternized poly(2.6 dimethyl‐1.4 phenylene oxide)/polysulfone blend composite membrane doped with ZnO‐nanoparticles for alkaline fuel cells

Fabrication of N1-butyl substituted 4,5-dimethyl-imidazole based crosslinked anion exchange membranes for fuel cells

Benzimidazole as Solid Electrolyte Material for Fuel Cells

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