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Steel based Bipolar Plates for Proton Exchange Water Electrolysis

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Water electrolysis is a process that uses electricity, potentially from renewable energy sources, to split water into hydrogen and oxygen. Among water electrolysis technologies, alkaline electrolysis is the most developed and commercially available, but PEM electrolysis is emerging as a more efficient solution. It presents several advantages, such as the possibility to operate at high pressure and high current density for production of hydrogen.

Product Number: 51323-19236-SG
Author: Katie McCay, Corneliu Craciunescu, Sara Andrenacci, Andrea Kellenberger, Marit Stange, Mircea Dan, Thulile Khoza, Sigrid Lædre
Publication Date: 2023
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$20.00

Titanium is the most common Bipolar Plate (BPP) material used in Proton Exchange Membrane Water Electrolyzers (PEMWE) today, but compared to other metals, titanium is expensive, hard to machine and a critical raw material. The objective of this work has been to reduce the cost of BPPs for PEMWE by using stainless steel instead of titanium as base material. However, the electrochemical potential inside an operating PEMWE can reach 2 V vs the standard hydrogen electrode (SHE) which will result in corrosion of bare stainless steel. Corrosion resistant titanium-based coatings have thus been added to the steel surface by use of magnetron sputtering. Ex-situ corrosion testing of the different coatings in a simulated PEMWE environment has been performed. Initial testing has shown that titanium coated stainless steel is a promising alternative to titanium BPPs.

Titanium is the most common Bipolar Plate (BPP) material used in Proton Exchange Membrane Water Electrolyzers (PEMWE) today, but compared to other metals, titanium is expensive, hard to machine and a critical raw material. The objective of this work has been to reduce the cost of BPPs for PEMWE by using stainless steel instead of titanium as base material. However, the electrochemical potential inside an operating PEMWE can reach 2 V vs the standard hydrogen electrode (SHE) which will result in corrosion of bare stainless steel. Corrosion resistant titanium-based coatings have thus been added to the steel surface by use of magnetron sputtering. Ex-situ corrosion testing of the different coatings in a simulated PEMWE environment has been performed. Initial testing has shown that titanium coated stainless steel is a promising alternative to titanium BPPs.

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Picture for Theory and testing of composite materials on Stress Corrosion Cracking
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Theory and testing of composite materials on Stress Corrosion Cracking

Product Number: 51323-19002-SG
Author: Casey Whalen, Omar Ramirez
Publication Date: 2023
$20.00

Stress Corrosion Cracking, or SCC, is part of a group of cracks commonly known as Environmental Cracking. Additional types of cracks found in this group include corrosion fatigue and hydrogen embrittlement. It is generally known that SCC requires three factors to be present to form and continue growing. The first is a susceptible material. In the world of pipelines, carbon steel is quite susceptible to corrosion when buried but is typically protected from this threat utilizing a combination of external coatings in cathodic protection.
Picture for Impact Of Dissolved Oxygen Concentration In Seawater Injection Well On The Localized Corrosion Resistance Of Low Stainless Steel Grades
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Impact Of Dissolved Oxygen Concentration In Seawater Injection Well On The Localized Corrosion Resistance Of Low Stainless Steel Grades

Product Number: 51323-19063-SG
Author: Charles Leballeur, Nicolas Larché, Perry Ian Nice, Bruce Cowe
Publication Date: 2023
$20.00

Stainless steels have been used for a wide range of applications in seawater. They are known to be susceptible to localized corrosion under given conditions. This is often the limiting factor for the use of stainless steels for seawater applications.
Picture for Evaluation of Mechanistic Models and Correlations for Predicting Solid Particle-Induced Erosion under Various Flow Regimes
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Evaluation of Mechanistic Models and Correlations for Predicting Solid Particle-Induced Erosion under Various Flow Regimes

Product Number: 51323-19084-SG
Author: Farzin Darihaki, Ronald E. Vieira, Siamack A. Shirazi
Publication Date: 2023
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Erosion, a mechanical process during which material is removed from the pipelines and other flow-containing equipment, can occur when solid particles such as sand are carried by the flow. Erosion is more critical when there is a change in the flow direction, such as particle-laden flows in elbows and tees.


While experimentation is a possible approach to obtain erosion rates, the conditions under which tests could be performed are limited in some respects.
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