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

Abstract

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.

Studies on the effect of solvent for the synthesis of low‐cost and efficient Pt‐Co/CAB cathode electrocatalyst to enhance the performance of a hydrogen‐based PEMFC

“…A difference in particle size was obtained between XRD and TEM analysis because XRD displays crystalline particles rather than real morphology. [47] However, the trend of particle size in TEM analysis was found (Table 3), which is similar to that of XRD analysis (Table 1). Similar to XRD analysis, the TEM analysis results of all three synthesized electrocatalysts also confirm that Pt-Co/C AB -EG would obviously result in the best performance in the half-cell and single-cell tests.…”

“…It may be due to the exponential decrease in the interfacial charge transfer resistance ( R 2 ) of varying electrode conductivity of the synthesized electrocatalysts. [ 47 ] The smaller arc radius indicates lower charge transfer resistance of the synthesized electrocatalyst. [ 48–50 ] Thus, it may be concluded from Figure 7A that the charge transfer resistance of Pt‐Co/C AB ‐EG electrocatalyst is lowest as compared to Pt‐Co/C AB ‐DMSO and Pt‐Co/C AB ‐DMF electrocatalyst.…”

“…It may be due to the exponential decrease in the interfacial charge transfer resistance (R 2 ) of varying electrode conductivity of the synthesized electrocatalysts. [47] The smaller arc radius indicates lower charge transfer resistance of the synthesized electrocatalyst. [48][49][50] Thus, it may be concluded from where CPE 1 is associated with a constant phase element that represents a double layer capacitance.…”

Development of Noval Electrocatalyst Based on Graphene Supported Palladium‐Cobalt Nanoparticles as Hydrogen Evolution Catalyst for the Cost Effective Production of Hydrogen from Methanol

“…The Pd (2 2 0) diffraction was used to analyze the lattice constant (a) using Vegard's law in order to calculate the degree of the alloy of the Pd 3 À Co 1 /G and Pd 1 À Co 1 /G catalysts quantitatively [46,47], using following equation (Eq. 3).…”

Single microfluidic fuel cell with three fuels – formic acid, glucose and microbes: A comparative performance investigation

“…As shown in Figure 3b, no oxidation and reduction peaks were observed at electrodes with optimized fuel and electrolyte, meaning that no catalyst was present on MWCNT electrodes. From the literature [38], catalyst electrodes have shown more redox peaks compare to plain electrodes. Therefore, the fabricated MCFC with plain MWCNT electrodes has drawn lower performance, but these electrodes are inexpensive.…”