C
Advantages
-Mature technology
-Cheap and effective
-Commercialized
-Long term durability
-Big stacks (to 25 MW)
-High current density
-Good work on partial load
-Good dynamic power operation
-Goog gas purity
-Easy maintnance and use
-Highest efficiency
-Non-noble metal catalyst
-Highest current density
-High operation pressure
-Possibility of combined operation
Disadvantages
-Liquid, corrosive electrolyte
-Freq. electrolyte replacement
-Low purity of gases
-Low current density
-Noble metal catalysts
-Low dynamic operation
-Low operational pressure
-High costs
-Noble metal catalysts
-Low life expectancy
-Small stacks (to 1 MW)
-New , partially established technology
-Bad durability and fast degradation
-High costs
-Technology in laboratory phase
 
Rysunek 4
For solid oxide electrolysis biggest effort in research is now put upon long lasting materials that could improve the durability and overall performance of SOE cells. Since it does not endure high load fluctuations, SOE technology requires operation at base load but also high temperature heat that could be supplied from solar plants or nuclear reaction (HTR technology is promising in this aspect). Admittedly SOE is best favourable for large scale and centralized hydrogen production.