Membrane electrode assemblies for high-temperature polymer electrolyte fuel cells based on poly(2,5-benzimidazole) membranes with phosphoric acid impregnation via the catalyst layers

Wannek, C.; Lehnert, Werner; Mergel, Jürgen

doi:10.1016/j.jpowsour.2009.03.051

Cited by 125 publications

(86 citation statements)

References 25 publications

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“…Based on our experiments, the optimal value is about 3 mg cm -2 for the GDEs with lower PTFE content (15e25 wt.%), 3.5e4 mg cm -2 for the higher PTFE content (not detailed here), which is thought to be affected by the change in the thickness and structure of the CL [23,35]. In contrast, the MEA without PA impregnation in the GDEs shows the poorest fuel cell performance under the same operating conditions (Fig.…”

Section: Effect Of Pa Impregnation In the Gdes On The Mea Performancementioning

confidence: 93%

Enhanced performance of polybenzimidazole-based high temperature proton exchange membrane fuel cell with gas diffusion electrodes prepared by automatic catalyst spraying under irradiation technique

Pasupathi

Bladergroen

et al. 2013

Journal of Power Sources

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Su, H. et al. (2013). Enhanced performance of polybenzimidazole-based high temperature proton exchange membrane fuel cell with gas diffusion electrodes prepared by automatic catalyst spraying under irradiation technique. Huaneng Su, Sivakumar Pasupathi, Bernard Jan Bladergroen, Vladimir Linkov and Bruno G. Pollet Abstract Gas diffusion electrodes (GDEs) prepared by a novel automatic catalyst spraying under irradiation (ACSUI) technique are investigated for improving the performance of phosphoric acid (PA)-doped polybenzimidazole (PBI) high temperature proton exchange membrane fuel cell (PEMFC). The physical properties of the GDEs are characterized by pore size distribution and scanning electron microscopy (SEM). The electrochemical properties of the membrane electrode assembly (MEA) with the GDEs are evaluated and analyzed by polarization curve, cyclic voltammetry (CV) and electrochemistry impedance spectroscopy (EIS). Effects of PTFE binder content, PA impregnation and heat treatment on the GDEs are investigated to determine the optimum performance of the single cell. At ambient pressure and 160 o C, the maximum power density can reach 0.61 W cm -2 , and the current density at 0.6 V is up to 0.38 A cm -2 , with H /air and a platinum loading of 0.5 mg cm -2 on both electrodes. The MEA with the GDEs shows good stability for fuel cell operating in a short term durability test.

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Section: Effect Of Pa Impregnation In the Gdes On The Mea Performancementioning

confidence: 93%

Enhanced performance of polybenzimidazole-based high temperature proton exchange membrane fuel cell with gas diffusion electrodes prepared by automatic catalyst spraying under irradiation technique

Pasupathi

Bladergroen

et al. 2013

Journal of Power Sources

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“… Polybenzimidazole (PBI) can be prepared by polymerisation of an appropriate diamine and carboxylic acid in polyphosphoric acid at 180e200 o C and the alternative form, ABPBI, is synthesised by the polymerisation of the diamine 3,4-diamonobenzoic acid under similar conditions. Conductivity for ABPBI has been reported as 0.08 S cm -1 at 140 o C with no hydration and 0.2 S cm -1 at 20%RH [57]. Extensive reviews of these materials have recently been published by Assensio et al [8] and Li et al [58].…”

Section: Polymer Electrolyte Membrane (Pem)mentioning

confidence: 99%

“…Wannek et al [57,77] reported a power density of 120 mW at 600 mV after only 11 min of operation for an ABPBI membrane.…”

Section: Polymer Electrolyte Membrane (Pem)mentioning

confidence: 99%

High temperature (HT) polymer electrolyte membrane fuel cells (PEMFC) – A review

Chandan

Hattenberger

El-Kharouf

et al. 2013

Journal of Power Sources

812

444

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One possible solution of combating issues posed by climate change is the use of the High Temperature (HT) Polymer Electrolyte Membrane (PEM) Fuel Cell (FC) in some applications. The typical HT-PEMFC operating temperatures are in the range of 100e200 o C which allows for co-generation of heat and power, high tolerance to fuel impurities and simpler system design. This paper reviews the current literature concerning the HT-PEMFC, ranging from cell materials to stack and stack testing. Only acid doped PBI membranes meet the US DOE (Department of Energy) targets for high temperature membranes operating under no humidification on both anode and cathode sides (barring the durability). This eliminates the stringent requirement for humidity however, they have many potential drawbacks including increased degradation, leaching of acid and incompatibility with current state-of-the-art fuel cell materials. In this type of fuel cell, the choice of membrane material determines the other fuel cell component material composition, for example when using an acid doped system, the flow field plate material must be carefully selected to take into account the advanced degradation. Novel research is required in all aspects of the fuel cell components in order to ensure that they meet stringent durability requirements for mobile applications.

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“…The advantages of PBI over other polymers, including low cost [54], high glass transition temperature [55], excellent textile fiber properties [56], and great thermal stability [57], promised it to be an excellent polymer for membrane fabrications. One of the most significant advantages of a PA doped PBI membrane over a PFSA based membrane is that its conductivity no longer relies on the water content due to its unique proton conduction mechanism [50,[58][59][60], but strongly depends on the PA doping level [50,[61][62][63] and the operating temperature [50,63,64].…”

Section: High Temperature Membranesmentioning

confidence: 99%

“…Some reported that RΩ decreased with increasing temperature [77,79,83]. The proton hopping mechanism proposed by Bouchet [60,63] was applied to explain this thermal effect [79]. The membrane conductivity σ based on this mechanism is expressed as [50,61]:…”

Section: Ohmic Resistancementioning

confidence: 99%

In-Situ Dynamic Characterization of Energy Storage and Conversion Systems

Zhu¹,

Zhu²,

Tatarchuk³

2013

Energy Storage - Technologies and Applications

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Membrane electrode assemblies for high-temperature polymer electrolyte fuel cells based on poly(2,5-benzimidazole) membranes with phosphoric acid impregnation via the catalyst layers

Cited by 125 publications

References 25 publications

Enhanced performance of polybenzimidazole-based high temperature proton exchange membrane fuel cell with gas diffusion electrodes prepared by automatic catalyst spraying under irradiation technique

Enhanced performance of polybenzimidazole-based high temperature proton exchange membrane fuel cell with gas diffusion electrodes prepared by automatic catalyst spraying under irradiation technique

High temperature (HT) polymer electrolyte membrane fuel cells (PEMFC) – A review

In-Situ Dynamic Characterization of Energy Storage and Conversion Systems

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