scholarly journals DEMS and Single Cell Measurements of a Direct Methanol Fuel Cell

1995 ◽  
Vol 1995-23 (1) ◽  
pp. 267-277
Author(s):  
V.M. Schmidt
Keyword(s):  
Fuel Cell ◽  
Single Cell ◽  
Direct Methanol Fuel Cell ◽  
Direct Methanol ◽  
Methanol Fuel Cell

Incorporation of nano-Al2O3 within the blend of sulfonated-PVdF-co-HFP and Nafion for high temperature application in DMFCs

RSC Advances ◽  
2015 ◽  
Vol 5 (78) ◽  
pp. 63465-63472 ◽  
Author(s):  
Piyush Kumar ◽  
A. D. Singh ◽  
Vikash Kumar ◽  
Patit Paban Kundu
Keyword(s):  
High Temperature ◽  
Fuel Cell ◽  
Single Cell ◽  
Direct Methanol Fuel Cell ◽  
High Temperature Application ◽  
Direct Methanol ◽  
Temperature Application ◽  
Methanol Fuel Cell

Nano-Al2O3 was incorporated into the blend of sulfonated-PVdF-co-HFP/Nafion using NMP (1-methyl-2-pyrrolidone) as a common solvent with the aim to develop an alternate membrane to be used in a single cell direct methanol fuel cell (DMFC).

Direct Methanol Fuel Cell Stack Design and Test in the Framework of DURAMET Project

2014 ◽  
Vol 93 ◽  
pp. 65-69 ◽  
Author(s):  
Orazio Barbera ◽  
Alessandro Stassi ◽  
David Sebastián ◽  
Vincenzo Baglio ◽  
Antonino S. Aricò
Keyword(s):  
Fuel Cell ◽  
Single Cell ◽  
Direct Methanol Fuel Cell ◽  
Printed Circuit Boards ◽  
Cell Number ◽  
Active Area ◽  
Circuit Boards ◽  
Direct Methanol ◽  
A Cell ◽  
Methanol Fuel Cell

Direct methanol fuel cell stacks, with different architectures have been developed. A fuel cell planar stack, operating in passive mode, has been designed for portable application. The device consists of 10 cells, with nominal power of 1.00 – 2.42 W, single cell active area of 4.85 cm2, nominal current of 1.00 A, at room pressure and temperature. Two printed circuit boards have been chosen to clamp and support the MEA and to electrically connect the active areas via conductive pathways. To investigate the stack performance, 4 different boards with different feeding holes shape have been designed. For high temperature operation purpose, a device with “stacked” configuration has been designed and manufactured. Operating parameters are: nominal power of 150W, single cell active area of 100 cm2, nominal current of 25 A, cell number of 10. Promising results have been obtained both for APU and portable applications.

Experimental Analysis of a Single Cell Flowing Electrolyte-Direct Methanol Fuel Cell

2011 ◽  
Author(s):  
Nasim Sabet-Sharghi ◽  
Cynthia A. Cruickshank ◽  
Edgar Matida
Keyword(s):  
Sulfuric Acid ◽  
Fuel Cell ◽  
Single Cell ◽  
Acid Concentration ◽  
Direct Methanol Fuel Cell ◽  
Sulfuric Acid Concentration ◽  
Open Circuit ◽  
Membrane Electrode ◽  
Direct Methanol ◽  
Methanol Fuel Cell

A single cell flowing electrolyte - direct methanol fuel cell (FE-DMFC) was studied experimentally. Nafion® NRE-212 was used in the membrane electrode assembly (MEA). The flowing electrolyte channel was formed by a polyethylene porous material. The active area of the fuel cell was approximately 25 cm2. Effects of varying flowing electrolyte conditions (channel thickness, sulfuric acid concentration, channel pressure), methanol concentration, and fuel cell temperature on the overall performance of the cell were studied. It was observed that stopping the flowing electrolyte caused a reduction in the open circuit voltage as well as the current of the cell, indicating that the methanol crossover affected the cell performance. Also, it is presented that a thicker flowing electrolyte channel results in lower power density, and sulfuric acid concentration of 2 molar (18%) was found to be the most advantageous. Raising operating temperature resulted in much better performance of the cell. Increasing flowing electrolyte pressure slightly decreased the performance.

The Cathode Airflow Effect on the Direct Methanol Fuel Cell From Single Cell to a Planar Module

2008 ◽  
Vol 6 (1) ◽  
Author(s):  
Yean-Der Kuan ◽  
Shi-Min Lee ◽  
Min-Feng Sung
Keyword(s):  
Fuel Cell ◽  
Single Cell ◽  
Direct Methanol Fuel Cell ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Membrane Electrode ◽  
Airflow Rate ◽  
Airflow Velocity ◽  
Direct Methanol ◽  
Methanol Fuel Cell

A series of experiments was conducted to examine the cathode airflow effect on a direct methanol fuel cell (DMFC) via the views of both airflow rate and airflow velocity from a single cell into a three-cell printed circuit board-based DMFC module. The objective of this paper is to discuss the relationship or difference between a single cell and a planar module. All experiments conducted were under constant anode fuel flow rate and operating temperature. The results show that the airflow supplied to a planar DMFC module does not just multiply the number of membrane electrode assemblies (MEAs) to a suitable airflow rate obtained from a single cell DMFC test. The results also show that the cathode airflow velocity effect is more significant than the airflow rate effect.

Model for the Degradation Performance of a Single-Cell Direct Methanol Fuel Cell under Varying Operational Conditions

Fuel Cells ◽  
2013 ◽  
Vol 13 (6) ◽  
pp. 1005-1017 ◽  
Author(s):  
A. Kianimanesh ◽  
Q. Yang ◽  
S. S. Park ◽  
D. Xue ◽  
T. Freiheit
Keyword(s):  
Fuel Cell ◽  
Single Cell ◽  
Direct Methanol Fuel Cell ◽  
Operational Conditions ◽  
Direct Methanol ◽  
Methanol Fuel Cell

Performance measurements of a single cell flowing electrolyte-direct methanol fuel cell (FE-DMFC)

2013 ◽  
Vol 230 ◽  
pp. 194-200 ◽  
Author(s):  
Nasim Sabet-Sharghi ◽  
Cynthia Ann Cruickshank ◽  
Edgar Matida ◽  
Feridun Hamdullahpur
Keyword(s):  
Fuel Cell ◽  
Single Cell ◽  
Direct Methanol Fuel Cell ◽  
Performance Measurements ◽  
Direct Methanol ◽  
Methanol Fuel Cell

scholarly journals Pengebangan prototipe direct methanl fuel cell (DMFC) dan pengaruh kandungan nafion membrane electrode assembly (MEA)

2018 ◽  
Vol 7 (2) ◽  
pp. 792
Author(s):  
Widodo W Purwanto ◽  
S Slamet ◽  
Martin Rifki ◽  
Isye Hayatina ◽  
Tiurma Theresa ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Single Cell ◽  
Power Density ◽  
Hot Pressing ◽  
Direct Methanol Fuel Cell ◽  
Carbon Cloth ◽  
Direct Methanol ◽  
Cell Test ◽  
Brush Coating ◽  
Methanol Fuel Cell

The purposes of this research are designing the prototype   of DMFC, consist of graphite and aluminium cell stacks and MEA with difference Nafion content. Cell stack has active area of 6.5 cm2, and single serpentine flow field. MEAs were fabricated using Nafion membrane 117 (DuPont), gas diffusion layer (GDL) carbon cloth, and commercial catalysts E-Tek, Pt/C for the cathode side and Pt-Ru/C for the anode. Catalysts loading on the anode are 3 and 4 mgPt-Ru/cm2 and on the cathode is 3 mg/cm2. Dry Nafion content of 20 %-wt and 40 %-wt were used in this experiment. MEA fabrication was done by brush coating and hot pressing. Single cell test conducted to evaluate the performance of DMFC at 70°C with 2M methanol as fuel and air as the oxidant. The results of single cell test showed that cell voltage of 600-750 mV, current density of 100 150 mW/cm2, with maximum power density of 19 mW/cm2 ware achieved. MEA with 40 wt% Nafion content showed the better performance than 20 %-wt with power density 19 mWlcm2 and 6 mW/cm2, respectively. Increasing the catalyst loading from 3 to 4 mgPt-Ru/cm2 improved the power density from 16 to 18 mW/cm2. Keywords: Direct Methanol Fuel Cell, Cel stack, MEA, Nation content. Abstrak Penelitian ini bertujuan untuk merancang sebuah prototipe DMFC dengan cell stack berbahan grafit dan aluminium serta fabrikasi MEA dengan variasi kandungan Nafion. Cell stack memiliki luas aktif 6.5 cm2 dengan flowfield bertipe single serpentine. MEA difabrikasi menggunakan membran Nafion 117 (DuPont), lapisan difusi gas carbon cloth dan katalis komersial E-Tek, Pt/C untuk katoda dan Pt-Ru/Cuntuk anoda. Kandungan katalis adalah 3 dan 4 mgPt-Ru/cm2 pada sisi anoda dan 3 mg/cm2 pada sisi katoda. Kandungan Nafion yang digunakan adalah 20 dan 40 % berat. Fabrikasi MEA dilakukan dengan metode brush coating dan hot pressing. Uji kinerja DMFC dilakukan pada suhu 70°C dengan menggunakan bahan bakar metanal 2M dan udara sebagai oksidan. Hasil uji kinerja DMFC sel tunggal didapatkan potensial sel 600-750 mv densitas arus 100-150 mW/cm serta densitas energi maksimum 19 mW/cm2.  MEA dengan kandun?an Nafion 40 % berat memiliki kinerja yang lebih baik dengan densitas energi 19 mW/cm dibandingkan dengan Nafion 20 % berat sebesar 6 mW/cm2. Kenaikan loading katalis anoda dari 3 menjadi  4 mgPt-Ru/cm2 dapat meningkatkan  densitas  energi dari  16 mW/cm2 menjadi 18 mW/cm2.Kata kunci: Direct Methanol Fuel Cell,Cel stack, MEA, kandungan Nation.

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