A STUDY OF THE LOSS CHARACTERISTIC OF A HIGH PRESSURE ELECTROLYZER SYSTEM FOR HYDROGEN PRODUCTION

2015 ◽  
Vol 75 (8) ◽  
Author(s):  
Alhassan Salami Tijani ◽  
A.H. Abdol Rahim ◽  
Mohd Khairulddin Badrol Hisam
Keyword(s):  
High Pressure ◽  
Hydrogen Production ◽  
Polymer Electrolyte ◽  
Current Density ◽  
Proton Exchange Membrane ◽  
Polymer Electrolyte Membrane ◽  
Water Electrolysis ◽  
Proton Exchange ◽  
Ohmic Resistance ◽  
Loss Characteristic

The aim of this paper is to analyse loss characteristic of a high-pressure electrolyzer system for hydrogen production. Fundamental thermodynamics and electrochemical relations related to polymer electrolyte membrane (PEM) electrolyzer have been modelled in MATLAB. Simple proton exchange membrane water electrolysis is analysed on the basis of well-known Butler-Volmer kinetic for the electrodes and transport resistance in the polymer-electrolyte. The overpotential at the anode, cathode and overpotential due to ohmic resistance were analysed individually. A sensitivity analysis was carried out to study the effect of exchange current density on Faraday efficiency. At current density of 0.2A/cm2, a higher efficiency of 87.8 % was observed.  

A Photoelectrochemical Model of Proton Exchange Water Electrolysis for Hydrogen Production

2008 ◽  
Vol 130 (4) ◽  
Author(s):  
Jianhu Nie ◽  
Yitung Chen ◽  
Robert F. Boehm ◽  
Shanthi Katukota
Keyword(s):  
Hydrogen Production ◽  
Polymer Electrolyte ◽  
Current Density ◽  
Power Supply ◽  
Proton Exchange Membrane ◽  
Water Electrolysis ◽  
Electrical Circuit ◽  
Proton Exchange ◽  
Illumination Intensity ◽  
Electrolysis Cell

A photoelectrochemical model for hydrogen production from water electrolysis using proton exchange membrane is proposed based on Butler-Volmer kinetics for electrodes and transport resistance in the polymer electrolyte. An equivalent electrical circuit analogy is proposed for the sequential kinetic and transport resistances. The model provides a relation between the applied terminal voltage of electrolysis cell and the current density in terms of Nernst potential, exchange current densities, and conductivity of polymer electrolyte. Effects of temperature on the voltage, power supply, and hydrogen production are examined with the developed model. Increasing temperature will reduce the required power supply and increase the hydrogen production. An increase of about 11% is achieved by varying the temperature from 30°Cto80°C. The required power supply decreases as the illumination intensity becomes greater. The power supply due to the cathode overpotential does not change too much with the illumination intensity. Effects of the illumination intensity can be observed as the current density is relatively small for the examined illumination intensities.

Catalyst-coated proton exchange membrane for hydrogen production with high pressure water electrolysis

2021 ◽  
Vol 119 (12) ◽  
pp. 123903
Author(s):  
Xinrong Zhang ◽  
Wei Zhang ◽  
Weijing Yang ◽  
Wen Liu ◽  
Fanqi Min ◽  
...  
Keyword(s):  
High Pressure ◽  
Hydrogen Production ◽  
Proton Exchange Membrane ◽  
Water Electrolysis ◽  
Proton Exchange ◽  
Pressure Water ◽  
Exchange Membrane

scholarly journals High-performance, Durable and Low-Cost Proton Exchange Membrane Electrolyser with Stainless Steel Components

2021 ◽  
Author(s):  
Svenja Stiber ◽  
Noriko Sata ◽  
Tobias Morawietz ◽  
Syed Asif Ansar ◽  
Thomas Jahnke ◽  
...  
Keyword(s):  
High Performance ◽  
Proton Exchange Membrane ◽  
State Of The Art ◽  
Low Cost ◽  
Polymer Electrolyte Membrane ◽  
Water Electrolysis ◽  
Proton Exchange ◽  
Electrolyte Membrane ◽  
Current State ◽  
Exchange Membrane

Polymer electrolyte membrane water electrolysis (PEMWE) is the most promising technology for sustainable hydrogen production. However, it has been too expensive to compete with current state-of-the-art technologies due to the...

scholarly journals Literature Survey of Interleaved DC-DC Step-Down Converters for Proton Exchange Membrane Electrolyzer Applications

2019 ◽  
Vol 3 (1) ◽  
pp. 33 ◽  
Author(s):  
Vittorio Guida ◽  
Damien Guilbert ◽  
Bruno Douine
Keyword(s):  
Hydrogen Production ◽  
Fossil Fuels ◽  
Proton Exchange Membrane ◽  
Water Electrolysis ◽  
Proton Exchange ◽  
Voltage Gain ◽  
Output Current ◽  
Step Down ◽  
Exchange Membrane ◽  
Current Ripple

Recently, the use of electrolyzers for hydrogen production through water electrolysis is of great interest in the industrial field to replace current hydrogen production pathways based on fossil fuels (e.g. oil, coal). The electrolyzers must be supplied with a very low DC voltage in order to produce hydrogen from the deionized water. For this reason, DC-DC step-down converters are generally used. However, these topologies present several drawbacks from output current ripple and voltage gain point of view. In order to meet these expectations, interleaved DC-DC step-down converters are considered as promising and interesting candidates to supply proton exchange membrane (PEM) electrolyzers. Indeed, these converters offer some advantages including output current ripple reduction and reliability in case of power switch failures. In addition, over the last decade, many improvements have been brought to these topologies with the aim to enhance their conversion gain. Hence, the main goal of this paper is to carry out a thorough state-of-the-art of different interleaved step-down DC-DC topologies featuring a high voltage gain, needed for PEM electrolyzer applications.

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