Electrical Equivalent Model for Proton Exchange Membrane Fuel Cell Useful in On-Board Applications

The performance of thin carboxylated cellulose nanofiber-based (CNF) membranes as proton exchange membranes in fuel cells has been measured in-situ as a function of CNF surface charge density (600 and 1550 µmol g-1), counterion (H+or Na+), membrane thickness and fuel cell relative humidity (RH 55 to 95 %). The structural evolution of the membranes as a function of RH as measured by Small Angle X-ray scattering shows that water channels are formed only above 75 % RH. The amount of absorbed water was shown to depend on the membrane surface charge and counter ions (Na+or H+). The high affinity of CNF for water and the high aspect ratio of the nanofibers, together with a well-defined and homogenous membrane structure, ensures a proton conductivity exceeding 1 mS cm-1at 30 °C between 65 and 95 % RH. This is two orders of magnitude larger than previously reported values for cellulose materials and only one order of magnitude lower than Nafion 212. Moreover, the CNF membranes are characterized by a lower hydrogen crossover than Nafion, despite being ≈ 30 % thinner. Thanks to their environmental compatibility and promising fuel cell performance the CNF membranes should be considered for new generation proton exchange membrane fuel cells.

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Review for "PSO optimized PI controlled DC‐DC buck converter‐based proton‐exchange membrane fuel cell emulator for testing of MPPT algorithm and battery charger controller"

10.1002/2050-7038.12754/v2/review1 ◽

2020 ◽

Keyword(s):

Fuel Cell ◽

Proton Exchange Membrane ◽

Buck Converter ◽

Proton Exchange ◽

Battery Charger ◽

Exchange Membrane

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Decision letter for "PSO optimized PI controlled DC‐DC buck converter‐based proton‐exchange membrane fuel cell emulator for testing of MPPT algorithm and battery charger controller"

10.1002/2050-7038.12754/v2/decision1 ◽

2020 ◽

Keyword(s):

Fuel Cell ◽

Proton Exchange Membrane ◽

Buck Converter ◽

Proton Exchange ◽

Battery Charger ◽

Exchange Membrane

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Review for "PSO optimized PI controlled DC‐DC buck converter‐based proton‐exchange membrane fuel cell emulator for testing of MPPT algorithm and battery charger controller"

10.1002/2050-7038.12754/v1/review2 ◽

2020 ◽

Keyword(s):

Fuel Cell ◽

Proton Exchange Membrane ◽

Buck Converter ◽

Proton Exchange ◽

Battery Charger ◽

Exchange Membrane

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Latest Trends and Challenges In Proton Exchange Membrane Fuel Cell (PEMFC)

The Open Fuels & Energy Science Journal ◽

10.2174/1876973x01710010096 ◽

2017 ◽

Vol 10 (1) ◽

pp. 96-105 ◽

Cited By ~ 6

Author(s):

Mohammed Jourdani ◽

Hamid Mounir ◽

Abdellatif El Marjani

Keyword(s):

Fuel Cells ◽

Fuel Cell ◽

Proton Exchange Membrane ◽

Proton Exchange ◽

Total Cost ◽

Cell Efficiency ◽

Technical Advances ◽

Exchange Membrane

Background: During last few years, the proton exchange membrane fuel cells (PEMFCs) underwent a huge development. Method: The different contributions to the design, the material of all components and the efficiencies are analyzed. Result: Many technical advances are introduced to increase the PEMFC fuel cell efficiency and lifetime for transportation, stationary and portable utilization. Conclusion: By the last years, the total cost of this system is decreasing. However, the remaining challenges that need to be overcome mean that it will be several years before full commercialization can take place.This paper gives an overview of the recent advancements in the development of Proton Exchange Membrane Fuel cells and remaining challenges of PEMFC.

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