HYDROGEN ELECTROLYZER AND GREEN HYDROGEN ACT POSITIVELY, TO ELIMINATE CARBON EMISSIONS

The hydrogen electrolyzer is a device that uses electricity to separate hydrogen and oxygen ions in a solution such as water. This is done through the application of an electric current to a pair of electrodes immersed in a solution. Inside, chemical reactions take place in which the hydrogen and oxygen ions are separated.

The hydrogen electrolyzer is the essential equipment for the production of pure hydrogen. It is used in a large and wide range of industrial applications and scientists are developing it to reduce costs and increase its performance.

Hydrogen Electrolyzer Efficiency

The efficiency of the hydrogen electrolyzer depends largely on the quality and efficiency of the electrodes and the gas collection system. Also the applied electric current, the concentration of hydrogen ions in the solution, and the temperature can affect hydrogen production.

The electrolysis process is carried out in an electrochemical cell, which is composed of electrodes and the solution. Hydrogen ions are collected on one side of the cell, while oxygen ions are collected on the other side.

How much hydrogen does an electrolyzer produce?

Hydrogen production in an electrolyzer depends on several factors, including the size and efficiency of the equipment, the electrical current applied, and the concentration of hydrogen ions in solution. A small sized electrolyzer can produce around a few liters of hydrogen gas per hour, while industrial equipment can produce many times more.

There are several types of electrolyzers, we will mention the most important ones.

Alkaline hydrogen electrolyzer: It is a simple and cheap technology, easy to maintain because no noble metals are needed and it is relatively stable.

Conventional alkaline electrolysis is the most developed and commercial technology. It is based on the immersion of the two electrodes in an alkaline liquid electrolyte that conducts OH- anions and the electrodes are separated by a diaphragm.

The polymeric membrane electrolyzer (PEM): This technology is commercial on a smaller scale, and is still under development. It is a type of electrolysis where the electrolyte is a solid polymeric membrane that conducts H+. It is fed with pure water, the hydrogen produced is very pure (99.999%) and is pressurized in the system.

The solid-state hydrogen electrolyzer: It is a solid system working at high temperatures, i.e. between 500 and 1000°C. The electrolyte is a conductor of oxygen ions (O2). Energy efficiency is practically 100%. It does not require noble metals, can operate at high pressure and is reversible to a fuel cell.

“Green hydrogen,” which uses renewable energy and electrolyzers to produce hydrogen, eliminates carbon emissions from the source and makes hydrogen truly clean energy. It has attracted industry attention as an emerging field for achieving climate goals.

Green hydrogen” has several advantages over traditional hydrogen production methods:

• The raw materials are “green”, either water or other renewable energy used to generate electricity, they are environmentally friendly, and the electrolysis of water to produce hydrogen will only generate hydrogen and oxygen, it will not generate greenhouse emissions that would cause environmental pollution;
• “Green hydrogen” can solve the problem of redundancy and intermittent renewables.
• The feed water used for hydrogen production is one of the easiest resources available in real life, so it is necessary to consider the amount of raw material.

Currently, the emergence of Angstrom’s 2.5 MW single-stack containerized hydrogen production system has contributed to the popularization of “green hydrogen“. This system adopts advanced patented technology of hydrogen production by water electrolysis, the total footprint occupies 2 containers of 40 feet (1 of 40 feet and 2 of 20 feet).

This is a breakthrough for promoting the development of the global hydrogen energy industry.