Hydrogen Fuel Cell - Simple Overview PDF
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Uploaded by FreshestElation7831
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Summary
The document presents a simple overview of a hydrogen fuel cell, showing the roles of hydrogen and oxygen, the anode and cathode, and the reactions that occur. Key concepts include the Proton Exchange Membrane (PEM), the movement of electrons, and the production of water. Topics such as fuel cell electrochemistry and reactions are briefly explained.
Full Transcript
# HYDROGEN FUEL CELL - Simple overview Starting with a store of Hydrogen & Oxygen $O_{2}$ * $H_{2}$ * $O_{2}$ $H_{2}$ in here * ← CATHODE $O_{2}$ in here * Porous * PEM: Proton Exchange Membrane only passes $H^{+}$ ions (protons) $H_{2}$ * Anode $O_{2}$ * Cathode * $H_{2}O...
# HYDROGEN FUEL CELL - Simple overview Starting with a store of Hydrogen & Oxygen $O_{2}$ * $H_{2}$ * $O_{2}$ $H_{2}$ in here * ← CATHODE $O_{2}$ in here * Porous * PEM: Proton Exchange Membrane only passes $H^{+}$ ions (protons) $H_{2}$ * Anode $O_{2}$ * Cathode * $H_{2}O_{out}$ Electrochemical reaction in the cell Total reaction: $2H_{2(g)}+O_{2(g)} \longrightarrow 2H_{2}O_{(aq)}$ with electrical current, 4e flowing through the external load. * $\longrightarrow$ Byproduct: Water the electrons do useful work electrons this way $2H_{2}$ Protons ONLY * Anode * Cathode $2H_{2} \longrightarrow 4H^{+} + 4e^{-}$ Oxidation $O_{2}$ * Anode * Cathode $O_{2} + 4e^{-} + 4H^{+} \longrightarrow 2H_{2}0$: Reduction
