Electrooxidation study of methanol using H 2 O 2 and air as mixed oxidant at cathode in air breathing microfluidic fuel cell

The different weight ratios of Pd to Pt, i.e., 16:4, 10:10, 4:16 in Pd-Pt/C and Pd (20 wt. %) /C electrocatalysts with low metal loading were synthesized for glycerol electrooxidation in an air breathing microfluidic fuel cell (MFC). The cell performance on Pd-Pt (16:4)/C anode electrocatalyst was found best among all the electrocatalysts tested. The single cell when tested at a temperature of 35 o C using Pd-Pt (16:4)/C, showed maximum open circuit voltage (OCV) of 0.70 V and maximum power density of 2.77 mW/cm 2 at a current density of 7.71 mA/cm 2. The power density increased 1.45 times when cell temperature was raised from 35 o C to 75 o C. The maximum OCV of 0.78 V and the maximum power density of 4.03 mW/cm 2 at a current density of 10.47 mA/cm 2 were observed at the temperature of 75 o C. The results of CV substantiate the single cell performance for various operating parameters.

show abstract

“…There are many aliphatic alcohols like methanol [9], ethanol [10], ethylene glycol [11] and glycerol [12] etc. so far tested in MFC.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Pd and Pt Based Low Cost Bimetallic Anode Electrocatalyst for Glycerol Electrooxidation in Membraneless Air Breathing Microfluidic Fuel Cell

Panjiara

Pramanik

2021

J. Electrochem. Sci. Technol

Self Cite

View full text Add to dashboard Cite

show abstract

“…Methanol is electrochemically oxidized at an anode by reacting with hydroxide ions, resulting in carbon dioxide and water, as shown in Equation . The hydroxide (

{O H}^{-}

) ions are produced at the cathode when an oxidant (air or oxygen) reacts with water (Equation )

a n o d e : C H_{3} O H + 6 O H^{-} \to C O_{2} + 5 H_{2} O + 6 e^{-}

c a t h o d e : \frac{3}{2} O_{2} + 3 H_{2} O + 6 e^{-} \to 6 O H^{-}

o v e r a l l : C H_{3} O H + \frac{3}{2} O_{2} \to C O_{2} + 2 H_{2} O

…”

Section: Introductionmentioning

confidence: 99%

Physically crosslinked KOH impregnated polyvinyl alcohol based alkaline membrane for direct methanol fuel cell

Gupta

Pramanik

2018

Can J Chem Eng

Self Cite

View full text Add to dashboard Cite

A polyvinyl alcohol (PVA) based alkaline membrane was developed in the laboratory for use in direct methanol fuel cell (DMFC). This study investigates the performance of the alkaline PVA membrane, crosslinked by a physical crosslinking method. The membrane was characterized using water uptake, KOH uptake, ion exchange capacity, and ionic conductivity methods. The anode and cathode electrocatalysts were Pt-Ru (30:15 % by wt)/carbon black (C) and Pt (40 % by wt)/high surface area carbon (C HSA ), respectively. A similar electrocatalyst loading in the order of 1 mg/cm 2 was used at the anode and cathode. The cell voltage and current density data were recorded for different concentrations of fuel (methanol) and electrolyte (KOH). The optimum conditions for the fuel cell were 2 M methanol mixed in 3 M KOH solution at a flow rate of 2 mL/min with a cathode feed of humidified oxygen at a flow rate of 100 mL/min. The DMFC was operated at 30 8C, irrespective of other operating conditions. The maximum open circuit voltage of 0.6 V, current density of 7.71 mA/cm 2 at a cell voltage of 0.23 V, and maximum power density of 1.79 mW/cm 2 were obtained at the optimum cell condition. The KOH-doped PVA solid electrolyte was successfully tested in a direct methanol fuel cell, which results in excellent power density. Single cell test results prove that the physically crosslinked KOH-doped PVA electrolyte could be used as a suitable solid electrolyte in a fuel cell.

show abstract

“…The results from his work showed the best power density of 5 mW cm −2 at a fuel concentration of 4 M. Moreover, there is with no performance reduction due to the fuel crossover. Rathoure et al investigated the T‐shaped air breathing membrane‐less DMFC by using mixed oxidant (hydrogen peroxide and air), resulting in a best power density of 3.8 mW cm −2 .…”

Section: Design Of Membrane‐less Fuel Cellsmentioning

confidence: 99%

Membrane‐less micro fuel cell system design and performance: An overview

et al. 2019

View full text Add to dashboard Cite

Researchers interest in using fuel cells as a power source has grown because fuel cells are environmentally friendly. However, fuel cells still present challenges due to their performance and cost. This limits the commercialization of fuel cell systems, particularly in liquid fuel cells. One of the major obstacles is the Nafion membrane. The Nafion membrane is extremely expensive and causes the "fuel crossover phenomenon." Therefore, researchers have proposed a membrane-less fuel cell that eliminates the need of a membrane in the system mainly in micro fuel cells. Membrane-less fuel cell has shown an improvement on power density by approximately 12% compared with conventional type of proton electrolyte membrane fuel cell. However, there still a lack of information on system design and performance. Therefore, the main objective of this review is to present an extensive study focusing on the geometrical system design and performance of a membrane-less fuel cell system. It also presents the different types of membrane-less fuel cell systems. Lastly, it highlights the current problems and potentials to improve the performance of the system. Finally, it is observed that the cost of a membrane fuel cell can be reduced by 20% to 40% compared with the conventional type of fuel cell. KEYWORDS flow field design, geometrical design, laminar-based fuel cell, membrane-less fuel cell, shape of channel, system design

show abstract

Electrooxidation study of methanol using H 2 O 2 and air as mixed oxidant at cathode in air breathing microfluidic fuel cell

Cited by 36 publications

References 24 publications

Synthesis of Pd and Pt Based Low Cost Bimetallic Anode Electrocatalyst for Glycerol Electrooxidation in Membraneless Air Breathing Microfluidic Fuel Cell

Synthesis of Pd and Pt Based Low Cost Bimetallic Anode Electrocatalyst for Glycerol Electrooxidation in Membraneless Air Breathing Microfluidic Fuel Cell

Physically crosslinked KOH impregnated polyvinyl alcohol based alkaline membrane for direct methanol fuel cell

Membrane‐less micro fuel cell system design and performance: An overview

Contact Info

Product

Resources

About