Laboratory analysis of alkaline water electrolysis can include:

 Laboratory analysis of alkaline water electrolysis can include:

Electrochemical modeling

A review of modeling approaches for alkaline water electrolysis (AWE) can help identify strengths, weaknesses, and areas for improvement. 

Comparing polarization curves

Comparing polarization curves between laboratories can help identify discrepancies in results. These discrepancies can be caused by differences in setups, electrolyte concentrations, and handling of materials. 

Investigating the impact of impurities

A review of the impact of impurities on water electrolysis can help identify how impurities affect the process. 

Using a beaker cell setup

A beaker cell setup can be used to investigate the industrial relevance of research materials in the laboratory. This setup can be used to test at industrial conditions, such as 80 °C in 30 wt. % KOH for more than 300 hours. 

Using DRT to identify semicircles

DRT can help identify the anode and cathode semicircles in Nyquist and Bode plots when they overlap. 

Alkaline water electrolysis is a process that uses electricity to split water into hydrogen and oxygen. It's a promising technology for producing green hydrogen on a large scale.

Some parameters for laboratory analysis of alkaline water electrolyzers include:

Temperature: Alkaline water electrolyzers typically operate at 60–80 °C. 

Pressure: Alkaline water electrolyzers can operate at pressures of up to 30 bar. 

Current density: Alkaline water electrolyzers typically operate at a current density of 0.2 to 0.4 A cm−2. 

Electrolyte: Alkaline water electrolyzers typically use an alkaline solution, such as 30 wt% KOH, as an electrolyte. 

Water quality: Water for electrolysis should be deionized and meet at least ASTM Type II standards (>1 MegOhm-cm). It should also be measured for total silica, total organics, and total carbon. 

Some other factors that can affect the performance of an alkaline water electrolyzer include: electrode conductivity, electrode gap, diaphragm porosity and tortuosity, and bubble coverage rate. 

A harmonized electrochemical testing protocol can be used to benchmark new electrode materials. This protocol typically has three main sections: conditioning, activity measurement, and the stressor.