Green Hydrogen

Electrolysis Technology

A technology to produce hydrogen by electrolysis of water.

Electrolysis of water using renewable energy like hydropower, solar, and wind to produce hydrogen (H₂) and oxygen (O₂) with no carbon emissions, making it a key technology for building an eco-friendly hydrogen economy.

Renewable Energy + Water + 풍력 =
Hydrogen Oxygen

Hydrogen Purification Technology

Type, ALK(Alkaline Electrolysis), PEM(Proton Exchange Membrane Electrolysis), AEM(Anion Exchange Membrane Electrolysis), SOEC(Solid Oxide Electrolysis)
Type ALK
(Alkaline Electrolysis)
PEM
(Proton Exchange Membrane Electrolysis)
AEM
(Anion Exchange Membrane Electrolysis)
SOEC
(Solid Oxide Electrolysis)
Technology
Operating Temperature 60–90°C 50~80°C 35~50°C 700~900°C
Advantages
  • Mature technology
  • Cost competitiveness
  • Easy mass production
  • High purity, high pressure hydrogen production
  • High production pressure
  • Quick response to renewable energy fluctuations
  • Wide operating range, fast startup
  • Uses non-precious metal catalysts
  • High purity, high pressure hydrogen production
  • High space efficiency
  • High energy efficiency
  • Corrosion-resistant
  • Easy maintenance
Disadvantages
  • Hydrogen and oxygen mixing
  • Low hydrogen purity
  • Susceptible to corrosion
  • Expensive precious metal catalysts
  • High system cost
  • Low catalyst/electrode durability
  • High operating temperature
  • Low system/electrode durability
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