Formation of an integrated catalyst-coated membrane using electrohydrodynamic atomization Layer-by-Layer deposition for direct methanol fuel cells

Wang, Dazhi; Wang, Liang; Liang, Junsheng; Xia, Zhangxun; Wang, Suli; Zhu, Yingli; Liu, Chong

doi:10.1016/j.jpowsour.2012.09.092

Cited by 15 publications

(13 citation statements)

References 46 publications

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“…ES deposition of living bacteria and bio-molecules and self-patterning of Carbon nanotube and graphene in watersuspension have been achieved. It is also used for the production of nano-composite materials doped with nano-oxides, polymer fibers loaded with Metal catalysts for fabrics, porous membranes for energy production with fuel-cells, conversion in solar cells and storage in capacitors, sensors for gas detection (De Juan et al, 1996;Chen CH et al, 1999;Jayasinghe et al, 2002;Jayasinghe et al, 2005a, b;Wang DZ et al, 2005;Jayasinghe, 2006;Wang DZ et al, 2007a;Yu et al, 2007;Kim K et al, 2008;Prajapati et al, 2010;Wang D et al, 2011;Wang D et al, 2013;Krella et al, 2017;Castillo et al, 2018;Kelder et al, 2018).…”

Section: For Materials Processingmentioning

confidence: 99%

Review on water electro-sprays and applications of charged drops with focus on the corona-assisted cone-jet mode for High Efficiency Air Filtration by wet electro-scrubbing of aerosols

Borra

2018

Journal of Aerosol Science

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 electrosprays is a continuous production process of self-dispersed unipolar droplets with monodisperse/unimodal size distributions (0.2 < d modal < 150 µm)  Applications of ES of aqueous solutions are reviewed with special attention for material production and bio-applications  Means to achieve steady water ES are presented with respect to electrical discharges in ambient air around the liquid cone and jet  Streamer discharges with transient and asymmetric space charges disrupt the EHD equilibrium for steady cone-jet mode, while the axisymmetric and quasi-stationary space charge is required to achieve steady water ES in the pulseless corona-assisted cone-jet mode  Empirical scaling laws of droplet properties are reminded for both steady water ES in cone-jet with a pulseless corona and without discharge  High filtration efficiencies of a lab-scale wet bipolar-scrubbers (>99%) supports that Water ES in corona-assisted cone-jet could be applied to low cost Air cleaning

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Section: For Materials Processingmentioning

confidence: 99%

Review on water electro-sprays and applications of charged drops with focus on the corona-assisted cone-jet mode for High Efficiency Air Filtration by wet electro-scrubbing of aerosols

Borra

2018

Journal of Aerosol Science

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“…Most often in catalyst design and MEA, the deposition of the catalyst onto the fuel cell electrode is overlooked and can greatly affect the overall performance. Various methods have been implemented including painting, sputtering , screen‐printing , spraying , and spreading . Our previous study involved the varying of individual catalyst layer thickness on the anode electrode of the DMFC.…”

Section: Introductionmentioning

confidence: 82%

Effect of the Cathode Catalyst Layer Thickness on the Performance in Direct Methanol Fuel Cells

Glass

Prakash

2019

Electroanalysis

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Catalyst deposition control is one of the overlooked areas of fuel cell fabrication and research that can affect the overall performance and cost of the fuel cell to manufacture for mass production. The effect of the different individual catalyst layer thicknesses and loadings of the cathode compartment of a direct methanol fuel cell (DMFC) was investigated. The drawdown method was performed at thicknesses varying from 1 mil to 8 mils with platinum loadings ranging from 0.25 mg cm−2 to 2.0 mg cm−2. The membrane electrode assemblies (MEAs) with thicker individual layers (8 mil and 4 mil) performed better overall compared to the ones prepared with thinner individual layers (1 mil). The power density maxima for the different loading levels followed an exponential decrease of platinum utilization at the higher loading levels. The painted MEAs tended to display the similar performance characteristics as the drawdown MEA layers closest to the thickness at the respective loadings.

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“…The Pt/C or Pt-Ru/C nano-suspension was prepared by the mixing of Pt/C or Pt-Ru/C catalyst powder, deionized water, ethanol, and Nafion solution. The composition of the suspensions was shown in Table 1 and the preparation details were described in our previous work [20]. The EHDA deposition device comprises of an electrohydrodynamic nozzle coupled together with a computer controlled X-Y movement stage and a microscopic vision system is shown in Figure 1.…”

Section: Ehda Deposition Of Cls and The Preparation Of Measmentioning

confidence: 99%

Fabrication and Performance of Different Structural Cathode Catalyst Layers by EHDA Deposition for DMFC

Wang

Liang

et al. 2014

Fuel Cells

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In this work, electrohydrodynamic atomization Layer‐by‐Layer deposition was used to deposit cathode catalyst layers (CLs) at different working distances of 3, 5, and 7 mm. The influence of working distance on the structural characteristics of cathode CLs was analyzed. The cyclic voltammograms of the cathode electrodes with different structures and the performance of the assembled membrane‐electrode assemblies (MEAs) were examined. It was observed that the cathode CLs presented well‐packed and porous features. The dispersity of the deposited catalyst and the thickness of cathode CL increased with higher working distance, which resulted in larger electrochemical active surface area (ESA), higher performance of the assembled MEAs and higher catalyst utilization. The ESA increased by approximately 70% when the cathode CL produced at the working distance of 7 mm compared with that at 3 mm. The peak power density of 56.1 mW cm–2 and the peak cathode catalyst specific power of 140.3 mW mg–1 Pt were obtained when the cathode CLs produced at the working distance of 7 mm.

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Formation of an integrated catalyst-coated membrane using electrohydrodynamic atomization Layer-by-Layer deposition for direct methanol fuel cells

Cited by 15 publications

References 46 publications

Review on water electro-sprays and applications of charged drops with focus on the corona-assisted cone-jet mode for High Efficiency Air Filtration by wet electro-scrubbing of aerosols

Review on water electro-sprays and applications of charged drops with focus on the corona-assisted cone-jet mode for High Efficiency Air Filtration by wet electro-scrubbing of aerosols

Effect of the Cathode Catalyst Layer Thickness on the Performance in Direct Methanol Fuel Cells

Fabrication and Performance of Different Structural Cathode Catalyst Layers by EHDA Deposition for DMFC

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