PBI
                /
                
                  H
                  3
                
                
                  
                    PO
                  
                  4
                
              
            
           Gel Based Polymer Electrolyte Membrane Fuel Cells Under the Influence of Reformates

Bandlamudi, G.; Saborni, M.; Beckhaus, Peter; Mahlendorf, Falko; Heinzel, Angelika

doi:10.1115/1.3119054

Cited by 13 publications

(8 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among numerous possible candidates to replace the PFSA membrane for this type of technology cited in the literature, only a membrane based on phosphoric acid supported by polybenzimidazole (PBI) or its derivatives has received general acceptance within the community [5,7,8]. It is clear that the structure and composition of the gas diffusion electrode (GDE) has to be compatible with a membrane used as a polymer electrolyte.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, it represents a factor that prevents its widespread use due to the limited world resources of this element. The majority of these problems can be solved by increasing the operating temperature of the fuel cell, thus improving the electrode kinetics, enhancing catalyst resistivity to poisoning and simplifying the heat and water management of the fuel cell [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…The polymeric binder plays an important role in the CL's performance. This is connected, on the one hand, with the CL's mechanical properties and on the other hand with the use of a platinum catalyst [5]. In the case of the hightemperature PEM fuel cell, phosphoric acid soaked into the porous structure is assumed to play a key role in the proton conductivity of the CL [18].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Gas diffusion electrodes for high temperature PEM-type fuel cells: role of a polymer binder and method of the catalyst layer deposition

et al. 2011

View full text Add to dashboard Cite

The topic of this study is the optimization of the preparation procedure and chemical composition of a gas diffusion electrode (GDE) for utilization in hightemperature PEM fuel cells. A phosphoric acid-doped polybenzimidazole derivative membrane was used as a polymer electrolyte. The following parameters were studied: nature and content of the polymeric binder (PTFEhydrophobic, PBI-hydrophilic) in the catalytic layer (CL) and concentration of platinum in catalytic powder (affecting the thickness of the CL). Brushing and spraying were selected as the most suitable techniques of CL deposition. Surprisingly, both polymeric binders investigated in the framework of this study were found to provide a similar GDE performance for CL deposited on the gas diffusion layer surface by spraying.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Gas diffusion electrodes for high temperature PEM-type fuel cells: role of a polymer binder and method of the catalyst layer deposition

et al. 2011

View full text Add to dashboard Cite

show abstract

“…The last two points are especially interesting for combined heat and power systems with integrated fuel processors [3,4]. Great efforts have been made to develop proton conducting membranes at temperatures higher than 100 °C and among many candidates phosphoric acid (H 3 PO 4 ) doped polybenzimidazole (PBI) membranes emerged as the most interesting [2].…”

Section: Introductionmentioning

confidence: 99%

Water transport study in a high temperature proton exchange membrane fuel cell stack

Bezmalinović

Strahl

Roda

et al. 2014

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

A study of water transport in a high temperature phosphoric acid doped polybenzimidazole (PBI) membrane fuel cell stack is reported. Tests with different stoichiometries of dry cathode and different humidity levels of anode are performed. It is found that water transport across the membrane electrode assembly (MEA) is noteworthy and that water vapor partial pressure on the anode outlet is almost always higher than on the cathode outlet, even when using dry hydrogen. The water transport is a strong function of current density but it also depends on stoichiometry and humidity level. In a series of tests with dry nitrogen on one side and humid nitrogen on the other side, the membrane's water permeability coefficient is determined to be 2.4x10 -13 mol s -1 cm -1 Pa -1 at 160 °C which is more than an order of magnitude higher than the values previously reported in the literature. Also, the results indicate that the permeability coefficient might be relative humidity dependent and could even be somewhat higher than the value reported here, but further investigation is needed. The experimental findings are reproduced and explained with a 2D steady state computational fluid dynamics (CFD) model. Internal water transport profiles across the membrane and along the gas flow channels are presented and discussed.

show abstract

“…Bandlamudi et al [19] have studied the properties of 150 W PBI/H 3 PO 4 Gel-Based Polymer Electrolyte Membrane Fuel Cells under the Influence of Reformates. Stacks based on Celtec-P commercial high temperature membranes are also being tested [20].…”

Section: Introductionmentioning

confidence: 99%

Performance of a 1 kW Class Nafion-PTFE Composite Membrane Fuel Cell Stack

Krishnamurthy¹,

Ramya²,

Samban³

2012

International Journal of Chemical Engineering

View full text Add to dashboard Cite

Composite membranes have been prepared by impregnation of Nafion into the expanded polytetrafluoroethylene (EPTFE) matrix. Nafion loading in the composite membranes was kept constant at 2 mg/cm 2 . The lower amount of electrolyte per unit area in the composite membranes offers cost advantages compared to conventional membrane of 50 µm thickness with an electrolyte loading of ∼9 mg/cm 2 . Composite membranes (30 µm thickness) were found to have higher thermal stability and mechanical strength compared to the conventional membranes (50 µm thickness). The performance of the membrane electrode assembly made with these composite membranes was comparable to that of the conventional membranes. Single cells fabricated from these MEAs were tested for their performance and durability before scaling them up for large area. The performance of a 20-cell stack of active area 330 cm 2 fabricated using these membranes is reported.

show abstract

PBI / H 3 PO 4 Gel Based Polymer Electrolyte Membrane Fuel Cells Under the Influence of Reformates

Cited by 13 publications

References 1 publication

Gas diffusion electrodes for high temperature PEM-type fuel cells: role of a polymer binder and method of the catalyst layer deposition

Gas diffusion electrodes for high temperature PEM-type fuel cells: role of a polymer binder and method of the catalyst layer deposition

Water transport study in a high temperature proton exchange membrane fuel cell stack

Performance of a 1 kW Class Nafion-PTFE Composite Membrane Fuel Cell Stack

Contact Info

Product

Resources

About