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The purpose of this chapter is to introduce the basic principles of electrochemical water splitting. First, the thermodynamics of the water splitting reaction is introduced. The role of electrolyte pH, operating temperature and operating pressure are discussed. Then a definition of the water splitting efficiency is provided, and main sources of irreversibility are listed. Finally, the kinetics of...
The purpose of this chapter is to provide an overview of the so‐called ‘polymer electrolyte membrane’ (PEM) water electrolysis for the production of hydrogen and oxygen of electrolytic grade. After a brief introduction to the historical background (Section 3.1.1), and a general description of the technology (Section 3.1.2), unit PEM cells are described in Section 3.1.3. Electrochemical performances...
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