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

Lue, Shingjiang Jessie; Liu, Nai-Yuan; Kumar, Selvaraj Rajesh; Tseng, Kevin Chi-Yang; Wang, Bo-Yan; Leung, Chieh-Hsin

doi:10.3390/en10121972

Cited by 7 publications

(5 citation statements)

References 46 publications

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“…An interesting attempt to prevent these mechanical limitations as well as controlling methanol crossover in DMFC is the preparation of hybrid PEMs by combining sSEBS with nano-scale inorganic components [30][31][32][33][34][35][36][37][38][39][40]. In this sense, different designs for preparing nanocomposite membranes are available which can be broadly classified into two groups: those based on the addition and mixing of a hydrophilic inorganic solid to a polymer solution (followed by solvent casting) and those based on sol-gel chemistry in which the specific interactions between components are favored and a more extended inorganic network is generally achieved [41][42][43][44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

40SiO2–40P2O5–20ZrO2 sol-gel infiltrated sSEBS membranes with improved methanol crossover and cell performance for direct methanol fuel cell applications

Santiago

Mosa

Escribano

et al. 2020

International Journal of Hydrogen Energy

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40P 2 O 5 -20ZrO 2 sol-gel infiltrated sSEBS membranes with improved methanol crossover and cell performance for direct methanol fuel cell applications Abstract Membranes commonly used in direct methanol fuel cell (DMFC) are expensive and show a great permeability to methanol which reduces fuel utilization and leads to mixed potential at the cathode.In this work, sulfonated styrene-ethylene-butylene-styrene (sSEBS) modified membranes with zirconia silica phosphate sol-gel phase are developed and studied in order to evaluate their potential use in DMFC applications. The synthesized hybrid membranes and sSEBS are subjected to an exhaustive physicochemical characterization by liquid uptake, ion exchange capacity, atomic force microscopy, X-ray photoelectron spectroscopy and dynamic mechanical and thermogravimetric analyses. Likewise, the potential use of the prepared membranes in DMFC is evaluated by means of electrochemical characterizations in single cell, determining the limiting methanol crossover current densities, proton conductivities and DMFC performances. The hybrid membranes show lower water and methanol uptakes, higher stiffness, water retention capability, upper power density and lower methanol crossover than sSEBS and Nafion 112.

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Section: Introductionmentioning

confidence: 99%

40SiO2–40P2O5–20ZrO2 sol-gel infiltrated sSEBS membranes with improved methanol crossover and cell performance for direct methanol fuel cell applications

Santiago

Mosa

Escribano

et al. 2020

International Journal of Hydrogen Energy

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“…reported one dimensional modeling of the DFAFCs to study the effect of cell temperature, formic acid concentration and porosity of gas diffusion layer. The model was able to match well with the experimental data obtained in the 1–5 M HCOOH concentration, cell temperature 30–80 °C and different proton conducting membranes [68] . The basic equations to characterize the processes in a DFAFCs are presented here.…”

Section: Fundamentals Of Fao Reactionmentioning

confidence: 52%

“…The model was able to match well with the experimental data obtained in the 1-5 M HCOOH concentration, cell temperature 30-80 °C and different proton conducting membranes. [68] The basic equations to characterize the processes in a DFAFCs are presented here. FAO takes place at the anode whereas reduction of oxygen happens at the cathode.…”

Section: Effect Of Thermodynamics and Mass Transfer On The Performanc...mentioning

confidence: 99%

Recent Advances in Anode Electrocatalysts for Direct Formic Acid Fuel Cells – Part I – Fundamentals and Pd Based Catalysts

Hossain

Saleem

Alwi

et al. 2022

The Chemical Record

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Direct formic acid fuel cells (DFAFCs) have gained immense importance as a source of clean energy for portable electronic devices. It outperforms other fuel cells in several key operational and safety parameters. However, slow kinetics of the formic acid oxidation at the anode remains the main obstacle in achieving a high power output in DFAFCs. Noble metal‐based electrocatalysts are effective, but are expensive and prone to CO poisoning. Recently, a substantial volume of research work have been dedicated to develop inexpensive, high activity and long lasting electrocatalysts. Herein, recent advances in the development of anode electrocatalysts for DFAFCs are presented focusing on understanding the relationship between activity and structure. This review covers the literature related to the electrocatalysts based on noble metals, non‐noble metals, metal‐oxides, synthesis route, support material, and fuel cell performance. The future prospects and bottlenecks in the field are also discussed at the end.

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“…The reaction kinetics of the samples were further studied using the Tafel polarization curves (Figure 4). The fluctuation of the CC curve is because of the decomposition of hydrogen peroxide that evolves gas bubbles [16][17][18][19]. In the Tafel plot, the value of exchange current density (j 0 ) can be obtained from Tafel equation (Equation (6)) according to the intercept of y-axis:…”

Section: Tafel Polarization Of the Ag Nw//cc Electrodementioning

confidence: 99%

Boosting the Power-Generation Performance of Micro-Sized Al-H2O2 Fuel Cells by Using Silver Nanowires as the Cathode

et al. 2018

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Micro-sized fuel cells represent one of the pollution-free devices available to power portable electronics. However, the insufficient power output limits the possibility of micro-sized fuel cells competing with other power sources, including supercapacitors and lithium batteries. In this study, a novel aluminum-hydrogen peroxide fuel cell is fabricated using uniform silver nanowires with diameters of 0.25 µm as the catalyst at the cathode side. The Ag nanowire solution is prepared via a polyol method, and mixed uniformly with Nafion and ethanol to enhance the adhesion of Ag nanowires. We carry out electrochemical tests, including cyclic voltammetry, electrochemical impedance spectroscopy, and Tafel polarization, to characterize the performance of this catalyst in H 2 O 2 reduction. The Ag nanowires exhibit a high effectiveness and durability while catalyzing the reduction of H 2 O 2 with a low impedance. The micro-sized Al-H 2 O 2 fuel cell equipped with Ag nanowires delivers a power density of 43 W·m −2 under a low concentration of H 2 O 2 (0.1 M), which is substantially higher than the previously reported devices. Energies 2018, 11, 2316 2 of 10 However, the practical energy density of Al-H 2 O 2 FCs was still insufficient for powering practical micro-sized devices, due to their limited H 2 O 2 catalytic area, poor activity of H 2 O 2 catalyzation, self-decomposition reactions of hydrogen peroxide, as well as aluminum corrosion [9]. Among the above limitations, the cathode performance related to the H 2 O 2 catalyzation plays a vital role in determining the overall fuel cell performance [10-12]. Extensive studies have been carried out in exploring suitable cathode catalysts and architectures for catalyzing H 2 O 2 reduction reactions. Patrissi et al. employed a textile flocking technique to fabricate a microfiber carbon electrode coated by a layer of alloy of Pd and Ir as the cathode [13]. Yang et al. synthesized nano-island-shaped silver particles [2]. The cathode material was achieved by electrodepositing the metallic Ag catalyst on a Ni-foam substrate. Even though Al-H 2 O 2 fuel cells equipped with these cathodes exhibited high power densities, the techniques and materials demonstrated in these works were typically expensive and time-consuming.Here, silver nanowires (Ag NWs) were synthesized and utilized for the first time as the hydrogen peroxide reduction reaction catalyst. The morphology and structure of the Ag NWs coated on carbon paper (denoted as Ag NW//CC hereafter) were characterized using scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDS). Electrochemical testing methods, including cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and Tafel polarization curve, were carried out to investigate its catalytic activity and stability. Finally, we designed and fabricated a microfluidic Al-H 2 O 2 FC, and characterized its power-generation performance. Results and Discussions Characterization of Electrode SurfaceThe morphologies of Ag NW//CC were firstly ...

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

Cited by 7 publications

References 46 publications

40SiO2–40P2O5–20ZrO2 sol-gel infiltrated sSEBS membranes with improved methanol crossover and cell performance for direct methanol fuel cell applications

40SiO2–40P2O5–20ZrO2 sol-gel infiltrated sSEBS membranes with improved methanol crossover and cell performance for direct methanol fuel cell applications

Recent Advances in Anode Electrocatalysts for Direct Formic Acid Fuel Cells – Part I – Fundamentals and Pd Based Catalysts

Boosting the Power-Generation Performance of Micro-Sized Al-H2O2 Fuel Cells by Using Silver Nanowires as the Cathode

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