Development of H2/O2 Fuel Cell Based on Proton Conducting P2O5-SiO2-PMA Glasses as Electrolyte

2006 ◽  
Vol 11-12 ◽  
pp. 149-152
Author(s):  
Thanganathan Uma ◽  
Masayuki Nogami
Keyword(s):  
Fuel Cell ◽  
Power Density ◽  
Current Density ◽  
Sol Gel ◽  
Phosphomolybdic Acid ◽  
Cell Performance ◽  
Cell Potential ◽  
Proton Conducting ◽  
Fuel Cell Performance ◽  
Glass Membrane

Sol-gel derived high proton conducting P2O5-SiO2-PMA (phosphomolybdic acid, H3PMo12O40 nH2O) glasses as electrolyte were used for the H2/O2 fuel cell performance at 30 °C under humidification with H2- based gas at the anode and O2- based gas at the cathode. The performance of the electrode was evaluated by the measurement of cell potential-current density plots. While the polarization curve yields data related to basic cell performance, more detailed information can be found by electrochemical measurements with an impedance analyzer. The power density shows a similar pattern to current density. The maximum power density value of 16.2 mW/cm2 was achieved with 0.1 mg/cm2 of Pt/C loading electrode and P2O5-SiO2-PMA (4-92-4 mol %) at 30°C with 30 % humidity. The glass membrane here plays a key role as electrolyte medium for proton transport and barrier to avoid the direct contact between fuel and oxygen.

Highly Conductive Anion Exchange Membrane for High Power Density Fuel-Cell Performance

2014 ◽  
Vol 6 (16) ◽  
pp. 13330-13333 ◽  
Author(s):  
Xiaoming Ren ◽  
Samuel C. Price ◽  
Aaron C. Jackson ◽  
Natalie Pomerantz ◽  
Frederick L. Beyer
Keyword(s):  
Fuel Cell ◽  
Anion Exchange ◽  
Power Density ◽  
High Power ◽  
Anion Exchange Membrane ◽  
Cell Performance ◽  
High Power Density ◽  
Fuel Cell Performance ◽  
Exchange Membrane

Numerical Investigation Into the Effect of Structural Parameters of Parallel Flow Field With Cooling Channels on Fuel Cell Performance

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Chen Li ◽  
Xiaoming Xu ◽  
Hao Hu ◽  
Nan Mei ◽  
Yi Yang
Keyword(s):  
Fuel Cell ◽  
Current Density ◽  
High Power ◽  
Structural Parameters ◽  
Great Influence ◽  
Flow Channel ◽  
Proton Exchange ◽  
Cell Performance ◽  
Test Scheme ◽  
Fuel Cell Performance

Abstract The electrochemical reaction inside a high-power fuel cell generates a lot of heat. Excessive heat affects the performance of the membrane, so it is necessary to introduce coolant. The main objective of coolant is regulating the temperature of relatively high-power proton exchange membrane fuel cell (PEMFC) stacks efficiently. The coolant channel has a great influence on the performance of PEMFC. In this work, a multiphase, 3D PEMFC model with serpentine flow channel is developed. In order to rank structural parameters according to the degree of influence on fuel cell performance, this study analyzed the current density, O2 mass fraction, and the distributions of temperature based on an orthogonal test scheme with three factors and three levels. The results show that rib width between the reactant flow channel and the cooling channel has the greatest influence on the current density, and gas flow channel width has the least influence.

scholarly journals The Relative Humidity Effect Of The Reactants Flows Into The Cell To Increase PEM Fuel Cell Performance

2018 ◽  
Vol 156 ◽  
pp. 03033 ◽  
Author(s):  
Mulyazmi ◽  
W.R W Daud ◽  
Silvi Octavia ◽  
Maria Ulfah
Keyword(s):  
Fuel Cell ◽  
Relative Humidity ◽  
Current Density ◽  
Single Cells ◽  
Pem Fuel Cell ◽  
Proton Exchange ◽  
Cell Performance ◽  
Cathode Side ◽  
Humidity Effect ◽  
Fuel Cell Performance

Design of the Proton Exchange Membrane (PEM) fuel cell system is still developed and improved to achieve performance and efficiency optimal. Improvement of PEM fuel cell performance can be achieved by knowing the effect of system parameters based on thermodynamics on voltage and current density. Many parameters affect the performance of PEM fuel cell, one of which is the relative humidity of the reactants that flow in on the anode and cathode sides. The results of this study show that the increase in relative humidity value on the cathode side (RHC) causes a significant increase in current density value when compared to the increase of relative humidity value on the anode side (RHA). The performance of single cells with high values is found in RHC is from 70% to 90%. The maximum current density generated at RHA is 70% and RHC is 90% with PEM operating temperature of 363 K and pressure of 1 atm

scholarly journals Improvement of direct methanol fuel cell performance using a novel mordenite barrier layer

2016 ◽  
Vol 4 (28) ◽  
pp. 10850-10857 ◽  
Author(s):  
S. Al-Batty ◽  
C. Dawson ◽  
S. P. Shanmukham ◽  
E. P. L. Roberts ◽  
S. M. Holmes
Keyword(s):  
Fuel Cell ◽  
Power Density ◽  
Barrier Layer ◽  
Direct Methanol Fuel Cell ◽  
Cell Performance ◽  
Fuel Cell Performance ◽  
Direct Methanol ◽  
Methanol Fuel Cell

The targeted addition of an ‘organophobe’ increases the power density of a direct methanol fuel cell by up to 50%.

The Effect of Variable Catalyst Loading in Electrodes on PEM Fuel Cell Performance

2005 ◽  
Author(s):  
R. Roshandel ◽  
B. Farhanieh
Keyword(s):  
Fuel Cell ◽  
Current Density ◽  
Catalyst Layer ◽  
Pem Fuel Cell ◽  
Pem Fuel Cells ◽  
Cell Performance ◽  
Cathode Side ◽  
Catalyst Loading ◽  
Fuel Cell Performance ◽  
Reactant Concentration

Catalyst layers are one the important parts of the PEM fuel cells as they are the main place for electrochemical reaction taking place in anode and cathode of the cells. The amount of catalyst loading of this layer has a large effect on PEM fuel cell performance. Non-uniformity of reactant concentration could lead to a variation of current density in anode and cathode catalyst layer. The main reason for this phenomenon is porosity variation due to two effects: 1. compression of electrode on the solid landing area and 2. Water produced at the cathode side of diffusion layer. In this study the effect of variable current density in anode and cathode electrode on cell performance is investigated. It has shown that better cell performance could be achieved by adding a certain amount of catalyst loading to each electrode, with respect to the reactant concentration.

scholarly journals Crosslinked Sulfonated Polyphenylsulfone-Vinylon (CSPPSU-vinylon) Membranes for PEM Fuel Cells from SPPSU and Polyvinyl Alcohol (PVA)

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1354 ◽  
Author(s):  
Je-Deok Kim ◽  
Satoshi Matsushita ◽  
Kenji Tamura
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Relative Humidity ◽  
Polyvinyl Alcohol ◽  
Current Density ◽  
Polyvinyl Acetate ◽  
Pem Fuel Cells ◽  
Cell Performance ◽  
Fuel Cell Performance ◽  
Electrolyte Membrane

A crosslinked sulfonated polyphenylsulfone (CSPPSU) polymer and polyvinyl alcohol (PVA) were thermally crosslinked; then, a CSPPSU-vinylon membrane was synthesized using a formalization reaction. Its use as an electrolyte membrane for fuel cells was investigated. PVA was synthesized from polyvinyl acetate (PVAc), using a saponification reaction. The CSPPSU-vinylon membrane was synthesized by the addition of PVA (5 wt%, 10 wt%, 20 wt%), and its chemical, mechanical, conductivity, and fuel cell properties were studied. The conductivity of the CSPPSU-10vinylon membrane is higher than that of the CSPPSU membrane, and a conductivity of 66 mS/cm was obtained at 120 °C and 90% RH (relative humidity). From a fuel cell evaluation at 80 °C, the CSPPSU-10vinylon membrane has a higher current density than CSPPSU and Nafion212 membranes, in both high (100% RH) and low humidification (60% RH). By using a CSPPSU-vinylon membrane instead of a CSPPSU membrane, the conductivity and fuel cell performance improved.

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