Optimization of contact resistance with better gasketing for a unitized regenerative fuel cell

Bhosale, Amit C.; Mahajan, Manthan A.; Ghosh, Prakash C.

doi:10.1016/j.ijhydene.2018.09.090

Cited by 17 publications

(3 citation statements)

References 44 publications

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“…In case of CCMs, the catalyst loss per unit area coated increases with decrease in the MEA size. It is therefore, suggested to use the technique for higher coating area [195]. To realize the importance of various steps and parameters on cell performance, authors characterized the single cell of URFC (Effective area = 22.5 cm 2 ) with in-house made MEA [17,71].…”

Section: Resultsmentioning

confidence: 99%

Preparation methods of membrane electrode assemblies for proton exchange membrane fuel cells and unitized regenerative fuel cells: A review

Bhosale

Ghosh

Assaud

2020

Renewable and Sustainable Energy Reviews

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Section: Resultsmentioning

confidence: 99%

Preparation methods of membrane electrode assemblies for proton exchange membrane fuel cells and unitized regenerative fuel cells: A review

Bhosale

Ghosh

Assaud

2020

Renewable and Sustainable Energy Reviews

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“…In this structure, the main sealing elements are created by injecting the adhesive sealing material into the edges of the PEM. For instance, a sticky sealing material is used to coat the edges of the PEM and connect the bipolar plates to the MEA assembly [106]. A layer of adhesive material impermeable by gas and liquid is placed around the MEA, the electrochemically active sites, and the bipolar plates, where sealing is necessary or desirable.…”

Section: Pem-wrapped Frame-sealing Structurementioning

confidence: 99%

A Review on the Long-Term Performance of Proton Exchange Membrane Fuel Cells: From Degradation Modeling to the Effects of Bipolar Plates, Sealings, and Contaminants

et al. 2022

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Proton-exchange membrane fuel cells (PEMFCs) are regarded as promising alternatives to internal combustion engines (ICEs) to reduce pollution. Recent research on PEMFCs focuses on achieving higher power densities, reducing the refueling time, mitigating the final price, and decreasing the degradations, to facilitate the commercialization of hydrogen mobility. The design of bipolar plates and compression kits, in addition to their coating, can effectively improve performance, increase durability, and support water/thermal management. Past reviews usually focused on the specific aspect, which can hardly provide readers with a complete picture of the key challenges facing and advances in the long-term performance of PEMFCs. This paper aims to deliver a comprehensive source to review, from both experimental, analytical and numerical viewpoints, design challenges, degradation modeling, protective coatings for bipolar plates, and key operational challenges facing and solutions to the stack to prevent contamination. The significant research gaps in the long-term performance of PEMFCs are identified as (1) improved bipolar-plate design and coating, (2) the optimization of the design of sealing and compression kits to reduce mechanical stresses, and (3) stack degradation regarding fuel contamination and dynamic operation.

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“…The mechanical and chemical degradation properties of sealants in PEMFCs have been extensively studied in Reference 46. Similarly, Bhosale et al 47 studied the role of silicone and PTFE gasket materials and their thicknesses on the performance of PEMFC.…”

Section: Introductionmentioning

confidence: 99%

Low stress creep response of PTFE sealants applied to PEM fuel cells

Kumar,

Koorata

2024

J of Applied Polymer Sci

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Viscoelastic properties of polytetrafluoroethylene (PTFE) play a crucial role in forecasting its long‐term behavior in engineering applications. An attempt is made to explore the viscoelastic properties of PTFE sealants that are utilized in polymer electrolyte membrane fuel cell (PEMFC). It is to be noted that PTFE sealants are vulnerable to creep under constant loading at elevated temperatures. Moreover, the creep of sealants will lead to leakage of reactants from the cell, which affects the performance of PEMFC. PTFE is an excellent choice as a sealant material in low‐temperature polymer electrolyte membrane fuel cell (LT‐PEMFC), which operates in the temperature range of 60–80°C. PTFE can be prominently used as sealants in high‐temperature polymer electrolyte membrane fuel cell (HT‐PEMFC), as it possesses no significant change in its physical properties within the temperature range of −150 to 300°C along with the working conditions of HT‐PEMFC. In LT‐PEMFC, the sealants will typically be subjected to low stresses in the range of 1–5 MPa. In this article, the creep response of PTFE sealant material is extensively studied at various temperatures of 25 (room temperature), 35, 45, 55, and 65°C and at three stress levels of 2, 3, and 4 MPa. The time–temperature superposition principle is utilized to develop master curve at a reference temperature of 25°C, to forecast long‐term creep characteristics of PTFE sealants. Moreover, the master curve for creep compliance is developed for 4.5 h.

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Optimization of contact resistance with better gasketing for a unitized regenerative fuel cell

Cited by 17 publications

References 44 publications

Preparation methods of membrane electrode assemblies for proton exchange membrane fuel cells and unitized regenerative fuel cells: A review

Preparation methods of membrane electrode assemblies for proton exchange membrane fuel cells and unitized regenerative fuel cells: A review

A Review on the Long-Term Performance of Proton Exchange Membrane Fuel Cells: From Degradation Modeling to the Effects of Bipolar Plates, Sealings, and Contaminants

Low stress creep response of PTFE sealants applied to PEM fuel cells

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