Experimental determination of optimal clamping torque for AB-PEM Fuel cell

Hassan, Noor Ul; Kılıç, Murat; Okumuş, Emin; Tunaboylu, Bahadır; Soydan, Ali Murat

doi:10.5599/jese.198

Cited by 9 publications

(7 citation statements)

References 17 publications

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“…This finding was explained by some ex-situ measured changes in the GDL's electro-physical properties (gas permeability, water contact angle and in-plane electrical resistivity) as the compression exceeded 3 MPa. Similar results were reported in [37,45,57] where a trade-off between the contact resistance and the mass transport resistance was found to give the best fuel cell performance.…”

Section: Assembly Pressuresupporting

confidence: 87%

“…This finding was explained by the changes of the electrical contact resistance and the GDL porosity under the effect of mechanical compression, meaning that the pressure uniformity was improved and consequently reduced the ohmic resistance of the PEFC, especially the contact resistance, and thus increased the maximum power density. These results are in good agreement with[54,57].…”

supporting

confidence: 90%

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Effects of mechanical compression on the performance of polymer electrolyte fuel cells and analysis through in-situ characterisation techniques - A review

Khetabi

Bouziane

Zamel

et al. 2019

Journal of Power Sources

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One of the factors that affect the polymer electrolyte fuel cell (PEFC) performance is the mechanical compression inside the stack. Although this compression plays an important role to ensure efficient gas sealing along with optimised electrical and thermal conductivities during PEFCs operation, excessive mechanical pressure may worsen the fuel cell performance through reducing the porosity and transport ability of PEFC components. In the last few years, intensive research studies have focused on the gas diffusion layers (GDLs) due to the strong relation of their compressibility with the performance of the PEFCs. A few review papers investigating the compression effect on individual fuel cell components have already been published. However, the evaluation of this effect on an operating PEFC has rarely been reviewed. This paper covers a comprehensive overview of the studies that have focused on the relationship between mechanical compression and the observed performance of a PEFC operating in real life conditions (in-situ). In this study, the effects of GDL properties with respect to the applied mechanical compression and the operating conditions are investigated. Much more work in literature has focused on GDL properties. Thus, an extended discussion is dedicated to this cell element in this paper.

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Section: Assembly Pressuresupporting

confidence: 87%

supporting

confidence: 90%

Effects of mechanical compression on the performance of polymer electrolyte fuel cells and analysis through in-situ characterisation techniques - A review

Khetabi

Bouziane

Zamel

et al. 2019

Journal of Power Sources

View full text Add to dashboard Cite

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“…From the LSV analysis, it ca COMBP) led to higher currents w addition, both the combined anode anode materials alone (CC or SS, a observed on SS (further displayed a mainly served as an electron-curren attachment. However, the electro depended on the contact between th (low resistance) was typically attain the fibers, a common practice in oth cells [44,45]). Typically, in a MEC, t press the anode′s carbon materia conductivity, a highly rigid SS electr assumed that this contact between formation on the CC, while the SS s the electron flow toward the anode.…”

Section: Lsv Measurements Of the Bioanodesmentioning

confidence: 99%

“…However, the electron conduction through the carbon-cloth electrode strongly depended on the contact between the carbon fibers (woven or nonwoven). Thus, high conductivity (low resistance) was typically attained by applying external pressure to force good contact among the fibers, a common practice in other fuel cells (e.g., hydrogen polymer electrolyte membrane fuel cells [44,45]). Typically, in a MEC, the anode is immersed in the medium without a mechanism to press the anode's carbon material.…”

Section: Dpv Measurements Of the Bioanodesmentioning

confidence: 99%

Improvement of Microbial Electrolysis Cell Activity by Using Anode Based on Combined Plasma-Pretreated Carbon Cloth and Stainless Steel

et al. 2019

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The anode activity in a microbial electrolysis cell (MEC) is known to be a limiting factor in hydrogen production. In this study, the MEC was constructed using different anode materials and a platinum-coated carbon-cloth cathode (CC). The anodes were comprised of CC, stainless steel (SS), and a combination of the two (COMB). The CC and SS anodes were also treated with plasma to improve their surface morphology and hydrophilic properties (CCP and SSP, respectively). A combined version of CCP attached to SS was also applied (COMBP). After construction of the MEC using the different anodes, we conducted electrochemical measurements and examination of biofilm viability. Under an applied voltage of 0.6 V (Ag/AgCl), the currents of a MEC based on CCP and COMBP were 11.66 ± 0.1331 and 16.36 ± 0.3172 A m−2, respectively, which are about three times higher compared to the untreated CC and COMB. A MEC utilizing an untreated SS anode exhibited current of only 0.3712 ± 0.0108 A m−2. The highest biofilm viability of 0.92 OD540 ± 0.07 and hydrogen production rate of 0.0736 ± 0.0022 m3 d−1 m−2 at 0.8 V were obtained in MECs based on the COMBP anode. To our knowledge, this is the first study that evaluated the effect of plasma-treated anodes and the use of a combined anode composed of SS and CC for hydrogen evolution in a MEC.

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“…Interesting physico-chemical properties of Nafion membrane give rise to many applications of this material including PEM fuel cells [26,27], energy and power tuning in pseudocapacitive materials [28,29], PEM technology electrolysis cells [30] and as matrix for entrapment of biomolecules [31]. The PbO 2 electrodeposition was expected to be governed by the slow diffusion of Pb(II) ions through Nafion® micro-and nano-channels toward the gold support.…”

Section: Introductionmentioning

confidence: 99%

Anodic deposition of lead dioxide at Nafion® covered gold electrode

Burazer

Sopčić

Mandić

2016

J Solid State Electrochem

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Anodic electrodeposition of lead dioxide at the bare and Nafion® covered gold electrode was studied by cyclic voltammetry and chronoamperometry. The results showed that Nafion® layer has a favourable effect on the efficiency of the deposition process which was caused by both thermodynamic and kinetic reasons. Electrodeposition process at Nafion® covered gold electrode goes via Pb(III) intermediate species which are stabilized within Nafion® membrane. The final PbO 2 deposit crystallizes in tetragonal β-PbO 2 form.

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Experimental determination of optimal clamping torque for AB-PEM Fuel cell

Abstract: Polymer electrolyte Membrane (PEM) fuel cell is an electrochemical device producing electricity by the reaction of hydrogen and oxygen without combustion. PEM fuel cell

Cited by 9 publications

References 17 publications

Effects of mechanical compression on the performance of polymer electrolyte fuel cells and analysis through in-situ characterisation techniques - A review

Effects of mechanical compression on the performance of polymer electrolyte fuel cells and analysis through in-situ characterisation techniques - A review

Improvement of Microbial Electrolysis Cell Activity by Using Anode Based on Combined Plasma-Pretreated Carbon Cloth and Stainless Steel

Anodic deposition of lead dioxide at Nafion® covered gold electrode

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