Improved polybenzimidazole films for H3PO4-doped PBI-based high temperature PEMFC

Lobato, Justo; Cañizares, Pablo; Rodrigo, Manuel A.; Linares, J.; Aguilar, Jonathan

doi:10.1016/j.memsci.2007.08.028

Cited by 217 publications

(126 citation statements)

References 33 publications

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“…• C, the voltage at 200 mA cm −2 decreases from 0.58 to 0.56 V. These results are in agreement with PBI membranes with high platinum loadings [27,28]. This improvement could be due to better properties of PBI membranes prepared using PPA process that have higher ionic conductivities than membranes prepared by solution casting and acid treatment [13].…”

Section: Performance Of Pbi-based Meassupporting

confidence: 81%

Electrochemical Performance Measurements of PBI-Based High-Temperature PEMFCs

Parrondo

Rao

Ghatty

et al. 2011

International Journal of Electrochemistry

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Acid-doped poly(2,2 -m-phenylene-5,5 -bibenzimidazole) membranes have been prepared and used to assemble membrane electrode assemblies (MEAs) with various contents of PBI (1-30 wt.%) in the gas diffusion electrode (GDE). The MEAs were tested in the temperature range of 140• C-200• C showing that the PBI content in the electrocatalyst layer influences strongly the electrochemical performance of the fuel cell. The MEAs were assembled using polyphosphoric acid doped PBI membranes having conductivities of 0.1 S cm −1 at 180 • C. The ionic resistance of the cathode decreased from 0.29 to 0.14 Ohm-cm 2 (180 • C) when the content of PBI is varied from 1 to 10 wt.%. Similarly, the mass transfer resistance or Warburg impedance increased 2.5 times, reaching values of 6 Ohm-cm 2 . 5 wt.% PBI-based MEA showed the best performance. The electrochemical impedance measurements were in good agreement with the fuel cell polarization curves obtained, and the optimum performance was obtained when overall resistance was minimal.

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Section: Performance Of Pbi-based Meassupporting

confidence: 81%

Electrochemical Performance Measurements of PBI-Based High-Temperature PEMFCs

Parrondo

Rao

Ghatty

et al. 2011

International Journal of Electrochemistry

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“…The interest in development of high temperature polymer electrolyte membrane fuel cells (HTPEMFCs) has risen due to the numerous advantages of PEMFC technology operating above 100 o C (Lobato et al, 2007;Scott et al, 2007;Li et al 2008): (i) kinetics of both the electrode reactions are enhanced, (ii) tolerance of the Pt electrodes to carbon monoxide is increased, (iii) non-noble metal catalysts may be used, (iv) the integration of reformer technology is simpler, and (v) the cooling system for facilitating heat dissipation is simplified.…”

Section: High-temperature Polymer Electrolyte Membrane Fuel Cells (Htmentioning

confidence: 99%

Proton Exchange Membrane Fuel Cell Technology: India’s Perspective

Basu¹

2015

Proceedings of the Indian National Science Academy

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India, with over a billion people and a growing economy, is one of the countries, which will shape the energy supply and demand scenario in the 21 st century. With high growth rates of the Indian economy, energy needs are also growing rapidly. A growing global concern over environmental issues and the need for energy security of the country requires India to pursue all options for diversification of fuels and energy sources. In the coming decades, hydrogen is poised to become a major component in India's energy mix for meeting the growing energy needs of the economy. India's national energy policies acknowledge hydrogen as a promising energy storage option, which will provide clean and efficient energy to meet the requirements in power and transportation sectors. A National Hydrogen Energy Roadmap, setup by National Hydrogen Energy Board, India for the development of hydrogen energy related technologies including fuel cells, has been covered in detail. The most promising of all fuel cell technologies developed is proton exchange membrane fuel cell (PEMFC), which operates at a lower temperature. The variant of PEMFC is direct alcohol fuel cell (DAFC), which is direct fed with methanol and ethanol as fuel instead of hydrogen. The road map is an industry-driven planning process that offers longterm hydrogen energy based solutions to India's energy sector. A section of this article provides detailed information about the R&D activities on PEMFC, DAFC and high temperature PEMFC in India. This covers developmental work carried out by the government research institutes, universities and private sector organizations. A majority of organizations are involved in fundamental research, for e.g. polymer membranes electrolyte, anode and cathode catalysts and membrane electrode assembly and hydrogen storage with very few involved in manufacturing and technology. Some institutions are involved in more application-oriented research such as stack and balance of plant development and fuel cell bus demonstration program. The market potential for fuel cell based applications in India is discussed at the end. India, with a growing economy and a suitable national energy policy is a huge prospective market for fuel cell based applications. Stationary markets for fuel cells in India range from backup power for residential applications to captive power generation for industrial applications. This article includes discussion on potential of fuel cell based power generation in luxury hotels, process industries, chlor-alkali and dairy industry and telecommunication and information technology industry. Fuel cell applications in the Indian automotive sector are of great prospects. Initial penetration in this sector will be in buses due to their centralized operation, maintenance and refuelling. Light duty vehicle market also shows potential for fuel cell technology implementation. India has a large number of organizations in the light duty vehicle category, i.e. passenger car sector.

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“…The interest in the development is due to the numerous advantages of PEMFC technology operating above 100˚C [3]- [5]: 1) kinetics of both the electrode reactions are enhanced; 2) tolerance of the Pt electrodes to carbon monoxide is increased; 3) non-noble metal catalysts may be used; 4) the integration of reformer technology is simpler; and 5) the cooling system for facilitating heat dissipation can be simplified. However, the limitation of the present commercial PEMs are not suitable for the temperature higher than 100˚C.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Low Cost Ion Conducting Poly(AAc-co-DMAPMA) Membrane for Fuel Cell Application

Das¹,

Basu²,

Verma³

et al. 2015

MSA

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Poly(AAc-co-DMAPMA) membrane (PADMA) is synthesized by free radical aqueous copolymerization of acrylic acid (AAc) and N-3-[dimethylamino)propyl]-methacrylamide (DMAPMA) to check its stability and conductivity. The hydrogel membrane characterized physically to study morphology by SEM, thermal stability by TGA and mechanical stability by measuring compressive strength and ionic conductivity by electrochemical impedance spectroscopy in alkaline as well as in acidic environment at different temperatures. The compression modulus of the hydrogel membrane is 24 kPa at pH = 1.0 and 16 kPa at pH = 7.0, and stable (no fracture) till 72% deformation. The PADMA hydrogel membrane ionic conductivity increased with the increase in temperature and structurally stable up to 190˚C. Improvement in ionic conductivity is observed after the heat treatment of the membrane. Compared with ionic conductivity of Nafion ® (SE512), the PADMA membrane found to be inferior. However, the PADMA hydrogel membrane conductivity was greater (~1 × 10 −4 S/cm) at low and high pH compared with neutral pH (~1 × 10 −5 S/cm) indicating the possibility of using the membrane as either a proton and hydroxyl ion conductor.

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Improved polybenzimidazole films for H3PO4-doped PBI-based high temperature PEMFC

Cited by 217 publications

References 33 publications

Electrochemical Performance Measurements of PBI-Based High-Temperature PEMFCs

Electrochemical Performance Measurements of PBI-Based High-Temperature PEMFCs

Proton Exchange Membrane Fuel Cell Technology: India’s Perspective

Characterization of Low Cost Ion Conducting Poly(AAc-co-DMAPMA) Membrane for Fuel Cell Application

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