Direct formic acid fuel cells

Rice, Cynthia A.; Ha, Su; Masel, Richard I.; Waszczuk, P.; Wiȩckowski, Andrzej; Barnard, Tom

doi:10.1016/s0378-7753(02)00271-9

Cited by 820 publications

(550 citation statements)

References 10 publications

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“…Formic acid fuel cells [196,197] have an advantage that in water solutions formic acid forms a formate anion that repels the negatively charged groups of PEM resulting in negligible crossover [198]. Accordingly, concentrated anode fuels (5-20 mol dm -3 ) can be used reducing the amount of water required and the overall weight of the system.…”

Section: Acidic Dafcmentioning

confidence: 99%

The correlation of electrochemical and fuel cell results for alcohol oxidation in acidic and alkaline media

Santasalo-Aarnio

Tuomi

Jalkanen

et al. 2013

Electrochimica Acta

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Section: Acidic Dafcmentioning

confidence: 99%

The correlation of electrochemical and fuel cell results for alcohol oxidation in acidic and alkaline media

Santasalo-Aarnio

Tuomi

Jalkanen

et al. 2013

Electrochimica Acta

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“…Since the slow diffusion of the formic anion generated from the formic acid partial dissociation in aqueous medium, the formic acid crossover through the Nafion ® 117 electrolyte membrane is decreased [8]. There is less electrode poisoning due to the dual path reaction of formic acid in a DFAFC [9]. Moreover, the proton conductivity of formic acid is expected to enhance the utilization of the anode electro-catalyst without introducing additional proton conductors into the anode catalyst [8].…”

Section: Introductionmentioning

confidence: 99%

Experimental and One-Dimensional Mathematical Modeling of Different Operating Parameters in Direct Formic Acid Fuel Cells

et al. 2017

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Abstract:The purpose of this work is to develop a one-dimensional mathematical model for predicting the cell performance of a direct formic acid fuel cell and compare this with experimental results. The predicted model can be applied to direct formic acid fuel cells operated with different formic acid concentrations, temperatures, and with various electrolytes. Tafel kinetics at the electrodes, thermodynamic equations for formic acid solutions, and the mass-transport parameters of the reactants are used to predict the effective diffusion coefficients of the reactants (oxygen and formic acid) in the porous gas diffusion layers and the associated limiting current densities to ensure the accuracy of the model. This model allows us to estimate fuel cell polarization curves for a wide range of operating conditions. Furthermore, the model is validated with experimental results from operating at 1-5 M of formic acid feed at 30-80 • C, and with Nafion-117 and silane-crosslinked sulfonated poly(styrene-ethylene/butylene-styrene) (sSEBS) membrane electrolytes reinforced in porous polytetrafluoroethylene (PTFE). The cell potential and power densities of experimental outcomes in direct formic acid fuel cells can be adequately predicted using the developed model.

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“…Direct formic acid fuel cells (DFAFCs) are considered promising power sources of clean and environment-friendly energy for miniature and portable electronic devices because of excellent OPEN ACCESS performance, such as high power density [1,2]. The direct formic acid fuel cell has a theoretical open circuit potential of 1.48 V, higher than that of direct methanol fuel cell (1.18 V) [3].…”

Section: Introductionmentioning

confidence: 99%

Sb Surface Modification of Pd by Mimetic Underpotential Deposition for Formic Acid Oxidation

et al. 2015

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Abstract:The newly proposed mimetic underpotential deposition (MUPD) technique was extended to modify Pd surfaces with Sb through immersing a Pd film electrode or dispersing Pd/C powder in a Sb(III)-containing solution blended with ascorbic acid (AA). The introduction of AA shifts down the open circuit potential of Pd substrate available to achieve suitable Sb modification. The electrocatalytic activity and long-term stability towards HCOOH electrooxidation of the Sb modified Pd surfaces (film electrode or powder catalyst) by MUPD is superior than that of unmodified Pd and Sb modified Pd surfaces by conventional UPD method. The enhancement of electrocatalytic performance is due to the third body effect and electronic effect, as well as bi-functional mechanism induced by Sb modification which result in increased resistance against CO poisoning.

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Direct formic acid fuel cells

Cited by 820 publications

References 10 publications

The correlation of electrochemical and fuel cell results for alcohol oxidation in acidic and alkaline media

The correlation of electrochemical and fuel cell results for alcohol oxidation in acidic and alkaline media

Experimental and One-Dimensional Mathematical Modeling of Different Operating Parameters in Direct Formic Acid Fuel Cells

Sb Surface Modification of Pd by Mimetic Underpotential Deposition for Formic Acid Oxidation

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