Why is hydrogen energy important?

The world is currently moving towards energy transformation, actively developing green energy such as solar energy, wind power, geothermal energy, hydrogen energy, etc. to replace fossil fuels, hoping to achieve net zero carbon emissions, ecological sustainability and reduce environmental pollution. In order to transform our society into a sustainable and carbon-free environment, it is necessary to introduce renewable hydrogen energy.

  Water electrolyzers used to produce green hydrogen are roughly divided into four types. While alkaline and PEM (Proton exchange membrane) electrolyzers have been put into commercial use on a large scale, anion exchange membrane (AEM) and solid oxide (Solid oxide electrolysis) electrolyzers are still under development. PEM electrolyzers and alkaline electrolyzers are two different water electrolysis technologies. PEM uses an acidic membrane as a solid electrolyte, and the catalyst used is iridium and platinum.

  It has the following advantages: Since the acidic electrolyte has high proton conductivity and low internal resistance and can operate at a higher current density (2A/cm2), it has high efficiency. Its electrode reaction rate is faster than that of alkaline electrolysis, and the hydrogen produced is also higher in purity. PEM electrolysis can use high pressure at the cathode end, while the anode end can operate at atmospheric pressure. Overall, PEM electrolysis has many advantages and is regarded as a potential water electrolysis technology.

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