Electrolyzer technology is the cornerstone of hydrogen production through water electrolysis, a process that splits water into hydrogen and oxygen using electrical energy, with applications spanning green hydrogen generation, energy storage, and industrial decarbonization. The technology is categorized into three primary types, each with distinct features tailored to specific use cases. Alkaline Electrolyzers, the most mature and widely adopted, utilize aqueous alkaline solutions (such as potassium hydroxide, KOH) as electrolytes. Their electrode materials, often composed of low-cost metals, contribute to lower investment costs, making them ideal for large-scale industrial applications where stable, continuous operation is required. They exhibit high operational stability and tolerance to lower-purity feedwater, further enhancing their suitability for bulk hydrogen production, which currently positions them as the dominant player in the global electrolyzer market.