Polybenzimidazole/SiO2 hybrid membranes for high temperature proton exchange membrane fuel cells

Date

2016-06-22

Author

DEVRİM, YILSER
Devrim, Huseyin
Eroğlu, İnci

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

260
views

0
downloads

Polybenzimidazole/Silicon dioxide (PBI/SiO2) hybrid membranes were prepared and characterized as alternative materials for high temperature proton exchange membrane fuel cell (HT-PEMFC). The PBI/SiO2 membranes were cast from a PBI polymer synthesized in the laboratory and contained 5 wt. % SiO2 as inorganic filler. Scanning electron microscopy (SEM) analysis showed that the uniform and homogeneous distribution of SiO2 particles in the hybrid membrane. The existence SiO2 has improved the acid retention and proton conductivity properties. A maximum conductivity of 0.1027 S/cm at 180 degrees C was obtained for the PBI/SiO2 hybrid membrane. Gas diffusion electrodes (GDE) were fabricated by ultrasonic coating technique with 1 mg Pt/cm(2) catalyst loading for both anode and cathode. The membranes were tested in a single HT-PEMFC with a 5 cm(2) active area operating at the temperature range of 140 degrees C-180 degrees C. Single HT-PEMFC tests indicated that PBI/SiO2 hybrid membrane was more stable and also performed better than pristine PBI membrane. Maximum current density was observed for PBI/SiO2 membrane at 165 degrees C and cell voltage of 0.6 V as 0.24 A/cm(2). The results suggested that PBI/SiO2 hybrid membrane is promising electrolytes for HT-PEMFC with improved fuel cell performance. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Subject Keywords

Polybenzimidazole, Hybrid Membrane, SiO2, High Temperature, PEM Fuel Cell

URI

https://hdl.handle.net/11511/56454

Journal

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

DOI

https://doi.org/10.1016/j.ijhydene.2016.02.043

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Polybenzimidazole based nanocomposite membranes with enhanced proton conductivity for high temperature PEM fuel cells Ozdemir, Yagmur; Uregen, Nurhan; DEVRİM, YILSER (2017-01-26) In this study, phosphoric acid doped PBI nanocomposite membranes were prepared by dispersion of various amounts of inorganic nanoparticles in PBI polymer followed by phosphoric acid (H3PO4) doping for high temperature proton exchange membrane fuel cells (HT-PEMFC). All of the PBI composite membranes were cast from the same FBI polymer with the same molecular weight. Titanium dioxide (TiO2), silicon dioxide (SiO2) and inorganic proton conductor zirconium phosphate (ZrP) were used as inorganic fillers. The PB...
Nafion/titanium silicon oxide nanocomposite membranes for PEM fuel cells DEVRİM, YILSER; Erkan, Serdar; BAÇ, NURCAN; Eroğlu, İnci (2013-04-01) In the present study, Nafion/Titanium Silicon Oxide (TiSiO4) nanocomposite membranes were prepared by recasting method for proton exchange membrane fuel cells. The composite membrane containing 10wt% TiSiO4 had a membrane thickness of 80 mu m. The membrane was characterized by thermogravimetric analysis, X-ray diffraction (XRD), and scanning electron microscopy (SEM). SEM and XRD results have proven the uniform and homogeneous distribution of TiSiO4 in Nafion, and consequently, the crystalline character of ...
PEM fuel cell short stack performances of silica doped nanocomposite membranes DEVRİM, YILSER; Devrim, Huseyin (2015-06-29) In this study, an air-cooled Proton Exchange Membrane Fuel Cell (PEMFC) short stack with Nafion/Silica nanocomposite membrane was designed and fabricated for net 100 W net power output to improve the stack performance at low relative humidity conditions. Composite membrane was prepared by solution casting method. Gas Diffusion Electrodes (GDE's) were produced by ultrasonic spray coating technique. Short stack design was based on electrochemical data obtained at 0.60 V was 0.45 A/cm(2) from performance tests...
Cross-linked polybenzimidazole membranes for high temperature PEM fuel cells Özdemir, Yağmur; Özkan, Necati; Devrim, Yılser; Department of Polymer Science and Technology (2018) Literature studies have shown that it is desirable to increase operation temperature of Proton Exchange Membrane Fuel Cells (PEMFCs) due to the reasons like reduced fuel impurity sensitivity, fast electrode kinetics, simple thermal and water management. However, during fuel cell operation at high temperatures, the PEM suffers from inevitable leaching out of the doped acid, which can have deteriorating effect on the membrane performance. Thus, there is always a need to minimize this problem by making ways so...
Development of polybenzimidazole/graphene oxide composite membranes for high temperature PEM fuel cells Uregen, Nurhan; Pehlivanoglu, Kubra; Ozdemir, Yagmur; DEVRİM, YILSER (2017-01-26) In this study, phosphoric acid doped Polybenzimidazole/Graphene Oxide (PBI/GO) nano composite membranes were prepared by dispersion of various amounts of GO in PBI polymer matrix followed by phosphoric acid doping for high temperature proton exchange membrane fuel cell (HT-PEMFC) application. The structure of the PBI/GO composite membranes was investigated by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and by thermogravimetric analysis (TGA). The introduction of GO into the FBI polymer matri...

Citation Formats

Y. DEVRİM, H. Devrim, and İ. Eroğlu, “Polybenzimidazole/SiO2 hybrid membranes for high temperature proton exchange membrane fuel cells,” INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, pp. 10044–10052, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56454.