Effect of anode diffusion media on direct formic acid fuel cells

Uhm, Sunghyun; Lee, Jae Kwang; Chung, Sung Taik

doi:10.1016/j.jiec.2008.03.003

Cited by 20 publications

(7 citation statements)

References 26 publications

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“…The contact angle between the formic acid and carbon cloth is observed to be higher than with carbon paper. A similar tendency of the contact angle decreasing with the increasing concentration of formic acid was also obtained in previous studies by Uhm et al [8]. Nevertheless, the values of the contact angles for all backing layers with liquid fuel concentrations are greater than 90 o , which indicates a hydrophobic surface layer of support.…”

Section: Results and Discussion Effect Of Backing Layer And Gdl Loadingsupporting

confidence: 88%

“…The mass transport constraints on the anode depend on the nature of the anode absorption media and formic acid concentrations. This constraint is due to the hygroscopic nature of formic acid in the absorption of hydrophobic media [8]. Therefore, it is necessary to develop a good anode as well as anode absorption media and MEA, including the formulation and the types of materials to overcome the mass transport constraints at the DFAFC's anode.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Membrane Electrode Assembly for High Performance of Formic Acid Fuel Cell

Aslam

Masdar²,

Kamarudin³

2016

MJAS

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This study is focused on development of membrane electrode assembly (MEA) for direct formic acid fuel cell (DFAFC). The effects of the backing layer, the loading of the gas diffusion layer (GDL), the carbon structures and the electrolyte membrane types, and fuel concentrations on the DFAFC's performance are investigated. Two types of backing layer are used in either a carbon paper (CP) or carbon cloth (CC) form, and three different types of carbon structures, carbon black (CB), carbon nanofiber (CNF) and carbon nanotube (CNT), are studied. A single cell DFAFC is tested to obtain the performance of the MEA, including the open circuit potential (OCP), current density, and power density. From the results, carbon paper indicates a much better performance than carbon cloth and gas diffusion layer (GDL) with 1 mg cm-2 loading shows a uniform surface morphology under scanning electron microscopy (SEM) and records a higher power density than 2.5 mg cm-2. Moreover, it is found that the power density increases with increase of the formic acid concentration up to an optimum concentration. However, the optimum fuel concentrations are different for each type of carbon structure. The highest power density is obtained using a combination of CNT and electrolyte membrane of Nafion 117 at 18.36 mW cm-2 using 10 M fuel concentration.

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Section: Results and Discussion Effect Of Backing Layer And Gdl Loadingsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Preparation of Membrane Electrode Assembly for High Performance of Formic Acid Fuel Cell

Aslam

Masdar²,

Kamarudin³

2016

MJAS

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“…The first reason is the need for the fuel to wet the surface of the catalyst. The second is that while fuel must wet the surface and internal pore structure, there must be adequate room for gaseous products to be removed-CO 2 for the case of methanol and formic acid oxidation [22][23][24]. Shin found that colloidal Nafion produced the best fuel cell results.…”

Section: Introductionmentioning

confidence: 99%

Effects of Nafion loading in anode catalyst inks on the miniature direct formic acid fuel cell

Morgan

Haan

Masel

2010

Journal of Power Sources

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“…Like PEMFCs, DFAFCs comprise an anode, a perfluorosulfonic acid membrane electrolyte, and a cathode [12]. Generally, the electrodes (anode and cathode) of DFAFCs consisted of three key components: bipolar plates, a diffusion media, and a catalyst layer [13,14].…”

Section: Introductionmentioning

confidence: 99%

Performance of Nb0.8Zr0.2 Layer-Modified AISI430 Stainless Steel as Bipolar Plates for Direct Formic Acid Fuel Cells

Liu

Lang

Cui

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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To improve the interfacial conductivity and corrosion resistance of AISI430 stainless steel (430SS) as bipolar plates for direct formic acid fuel cells (DFAFCs), a Nb 0.8 Zr 0.2 layer has been successfully synthesized via the pulsed laser deposition (PLD) technique on the surface of 430SS. This Nb 0.8 Zr 0.2 layer is smooth, uniform, and comparatively compact without any surface flaw and micropore. Investigation under the simulated anodic environment of DFAFCs (0.05 M H 2 SO 4 + 2 ppm HF + 10 M HCOOH at 70 °C) shows that the corrosion resistance of 430SS is obviously ameliorated after the PLD modification. In addition, the interfacial contact resistance of Nb 0.8 Zr 0.2 -430SS (6.0 mΩ cm 2 ) is much smaller than that of bare 430SS (151.3 mΩ cm 2 ) at the clamping force of 140 N cm −2 . Besides, different from the highly increased interfacial contact resistance of bare 430SS, the Nb 0.8 Zr 0.2 -430SS shows a minor increase resistance after potentiostatic tests in simulated anodic environment of DFAFCs.

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Effect of anode diffusion media on direct formic acid fuel cells

Cited by 20 publications

References 26 publications

Preparation of Membrane Electrode Assembly for High Performance of Formic Acid Fuel Cell

Preparation of Membrane Electrode Assembly for High Performance of Formic Acid Fuel Cell

Effects of Nafion loading in anode catalyst inks on the miniature direct formic acid fuel cell

Performance of Nb0.8Zr0.2 Layer-Modified AISI430 Stainless Steel as Bipolar Plates for Direct Formic Acid Fuel Cells

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