In situ decoration of metallic catalysts in flow-through electrodes: Application of Fe/Pt/C for glycerol oxidation in a microfluidic fuel cell

Martins, Cauê A.; Ibrahim, Omar; Pei, Pei; Kjeang, Erik

doi:10.1016/j.electacta.2019.03.018

Cited by 44 publications

(36 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…water were studied. We followed published protocols to build the porous electrodes by immersion [8, 32, 33], where the CP was immerged 50 successive times in the ink and finally dried in oven for 4 h at 80 °C. For the ultrasonic‐assisted method, the CP sheets were kept in the ink for 1 min in ultrasonic bath and dried for 4 h at 80 °C.…”

Section: Methodsmentioning

confidence: 99%

“…In general, bio(fuel) cells operate by using a gas diffusion layer (GDL) made of porous carbon, as carbon cloths, carbon felts and, most used, carbon paper (CP). CP has emerged as a potential GDL due its flexibility, high conductivity, electrochemical stability, and liquid/gas permeability [31], specially important to build microfluidic fuel cells [8, 32, 33].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Active Porous Electrodes Prepared by Ultrasonic‐bath and their Application in Glucose/O₂ Electrochemical Reactions

et al. 2020

Self Cite

View full text Add to dashboard Cite

Most of the practical applications in electrocatalysis require porous electrodes, built by dispersing the nanoparticles (NPs) on a gas diffusion layer, as carbon paper (CP). The lack of correlation between classic measurements in clean, controlled surfaces and thin films with those of porous electrodes, used in practical application, is largely neglected. Since catalysis depends on the area available, it is clear that the distribution of the NPs on the porous material is pivotal to the efficiency of the catalyst. Here we show a low‐cost method to disperse NPs on CP assisted in ultrasonic bath. Such method improves the Pt/C NPs distribution over the CP compared to the immersion method. As proof‐of‐concept, we show an increase in output current by using Pt/C/CP for 10 mM glucose electrooxidation and O2 eletroreduction in buffered solution at 37 °C, which is ascribed to the increase in collision factor. Furthermore, the cathodic reaction is facilitated compared to electrodes prepared by immersion, yielding an unprecedented open circuit voltage of 800 mV for the coupled reaction. The glucose/oxygen reaction is also investigated in passive flow in an H‐type cell to produce power. This concept shows promising application to build any kind of porous electrodes with improved area utilization.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active Porous Electrodes Prepared by Ultrasonic‐bath and their Application in Glucose/O₂ Electrochemical Reactions

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…Such structures effectively improved the utilization efficiency unit of PtPd and promoted the electro‐oxidation of glycerol, [ 18 ] with a large ECSA of 113.33 cm 2 mg PtPd −1 , the maximum oxidation peak current of 0.86 A mg PtPd −1 , a good stability with only 5.8% current decrease after 400 cycles, and excellent CO tolerance. [ 36 ]…”

Section: Electrocatalystsmentioning

confidence: 99%

“…Such a fuel cell achieved a peak power density up to 53.6 mW cm −2 at 694 mV and a limit current density up to 98.0 mA cm −2 because of high activity of the prepared catalysts and the well‐designed structure of fuel cell. [ 36 ] Therdthianwong et al proposed an alkaline‐acid direct glycerol fuel cell (AA‐DGFC) suitable for high‐power‐density portable power generation devices. AA‐DGFC with the Pt/C anode catalyst showed outstanding performance with open‐circuit voltage as high as 1.72 V and the peak power density of 330 mW cm −2 , which is about 2.7 times higher than the performance of a typical anion exchange membrane direct glycerol fuel cell (AEDGFC).…”

Section: Electrochemical Conversion Of Glycerolmentioning

confidence: 99%

Recent Progress in Electrocatalytic Glycerol Oxidation

et al. 2020

View full text Add to dashboard Cite

Glycerol, as the major by‐product of biodiesel, can be oxidized into diverse value‐added chemical products via either traditional chemical methods or electrochemical routes. Electrocatalytic glycerol oxidation reaction (GOR) driven by renewable‐derived electricity (e.g., wind and solar) is a promising pathway for fine chemicals production. In an electrochemical cell, GOR can be coupled with various cathodic reactions, including hydrogen evolution reaction (HER), CO2 reduction reaction (CO2RR), and oxygen reduction reaction (ORR); in this manner, different benefits of either energy effectiveness or additional value‐added products can be obtained depending on the cathode reduction reaction selected. Comprehensively understanding of electrocatalytic GOR and the associated processes is of great significance to promote its industrial application. Herein, recent progress of GOR is focused on. The background of biomass‐derived glycerol valorization to energy and value‐added chemicals as well as the electrochemical conversion techniques via GOR is introduced. Then, the electrocatalytic reaction pathways, the potential application of GOR, and the measurement method for products are also discussed and summarized. Special emphasis is put on the design and the development of high‐selectivity and high‐activity electrocatalysts for GOR. Finally, the challenges and the future prospects in the fields of GOR are highlighted.

show abstract

“…LFµFCs operate by using an anode and a cathode, as it is for a conventional fuel cell; however, they dispense the use of an ionic permeable membrane. The performance of LFµFCs with glycerol as the fuel was evaluated and the results were promising [137][138][139][140]. Table 4.…”

Section: Adgfcs For Energy Productionmentioning

confidence: 99%

Glycerol Electro-Oxidation in Alkaline Media and Alkaline Direct Glycerol Fuel Cells

Antolini¹

2019

Catalysts

View full text Add to dashboard Cite

The low price, highly active triol structure, high volumetric energy density, simple storage and environment-friendly properties make glycerol a promising fuel for an alkaline direct alcohol fuel cell (ADAFC). Unlike other ADAFCs, alkaline direct glycerol fuel cells (ADGFCs) can be used either to generate only energy (the common use of fuel cells) or to produce both energy and valuable chemicals. This work presents an overview of catalysts for glycerol oxidation in alkaline media, and their use in ADGFCs. A particular attention was paid to binary and ternary catalysts able both to increase the selectivity to valuable C3 glycerol oxidation products, reducing the C-C bond cleavage, and simultaneously to enhance glycerol conversion.

show abstract

In situ decoration of metallic catalysts in flow-through electrodes: Application of Fe/Pt/C for glycerol oxidation in a microfluidic fuel cell

Cited by 44 publications

References 47 publications

Active Porous Electrodes Prepared by Ultrasonic‐bath and their Application in Glucose/O₂ Electrochemical Reactions

Active Porous Electrodes Prepared by Ultrasonic‐bath and their Application in Glucose/O₂ Electrochemical Reactions

Recent Progress in Electrocatalytic Glycerol Oxidation

Glycerol Electro-Oxidation in Alkaline Media and Alkaline Direct Glycerol Fuel Cells

Contact Info

Product

Resources

About

In situ decoration of metallic catalysts in flow-through electrodes: Application of Fe/Pt/C for glycerol oxidation in a microfluidic fuel cell

Cited by 44 publications

References 47 publications

Active Porous Electrodes Prepared by Ultrasonic‐bath and their Application in Glucose/O2 Electrochemical Reactions

Active Porous Electrodes Prepared by Ultrasonic‐bath and their Application in Glucose/O2 Electrochemical Reactions

Recent Progress in Electrocatalytic Glycerol Oxidation

Glycerol Electro-Oxidation in Alkaline Media and Alkaline Direct Glycerol Fuel Cells

Contact Info

Product

Resources

About

Active Porous Electrodes Prepared by Ultrasonic‐bath and their Application in Glucose/O₂ Electrochemical Reactions

Active Porous Electrodes Prepared by Ultrasonic‐bath and their Application in Glucose/O₂ Electrochemical Reactions