What is the anodic reaction for hydrogen oxygen fuel cell?

The reaction occurs at anode of the cell is 2H2(g)+4OH−(aq)→4H2O(l)+4e−. Hydrogen gas is oxidised to water.

What is the cathodic and anodic cell reaction of hydrogen and oxygen fuel cell?

Cell reactions in a fuel cell: Oxidation at the anode (-): Oxidation of hydrogen gas to water occurs at the anode. Reduction at the cathode (+): Reduction of oxygen gas to OH ions occurs at the cathode.

What is the reaction occurring at the cathode in a hydrogen oxygen fuel cell?

Net cell reaction: 2H2+O2→2H2O.

What type of reaction occurs in hydrogen oxygen fuel cell?

A hydrogen fuel cell is an electrochemical cell that uses a spontaneous redox reaction to produce current that can do work. The net reaction is exothermic. Combining the 2 half cell potentials for the electrochemical reaction gives a positive cell potential.

What is the cathodic reaction?

Cathodic reactions are reduction reactions which occur at the cathode. Electrons released by the anodic reactions are consumed at the cathode surface. Unlike an anodic reaction, there is a decrease in the valence state. The most common cathodic reactions in terms of electrons transfer are given below: 1 (a)

What happens in a hydrogen oxygen fuel cell?

In a fuel cell, hydrogen and oxygen are combined to generate electricity, heat, and water.

What are fuel cells write cathode and anode reactions in fuel cell?

A complete fuel cell reaction comprises two half-cell electrochemical reactions that occur at either electrode. At one electrode (anode), the electrochemical reaction emits electrons (anodic reaction) and at the other electrode (cathode), the electrochemical reaction accepts electrons, thus, completing a full circuit.

Which reaction occurs at the anode and which at the cathode?

The reaction at the anode is oxidation and that at the cathode is reduction. The electrons are supplied by the species getting oxidized. They move from anode to the cathode in the external circuit.

What is the reaction at the anode in a fuel cell?

The fuel cell reaction of interest for most PFSA-based PEM systems is the hydrogen–oxygen reaction. On the anode side, hydrogen is oxidized to form two protons and two electrons. The protons conduct through the PFSA membrane, while the electrons travel outside the cell to drive a load.

What is the chemical reaction for a hydrogen fuel cell?

The overall chemical reaction in a hydrogen fuel electrochemical cell involves the oxidation of hydrogen by oxygen to produce only water. Hydrogen fuel cells offer an alternative to rechargeable cells and batteries.

What is anodic and cathodic reactions?

The first is the anodic reaction, in which a metal is oxidized, releasing electrons into the metal. The other is the cathodic reaction, in which a solution species (often O2 or H+) is reduced, removing electrons from the metal.

What is the cathode in a hydrogen fuel cell?

A fuel cell consists of two electrodes—a negative electrode (or anode) and a positive electrode (or cathode)—sandwiched around an electrolyte. A fuel, such as hydrogen, is fed to the anode, and air is fed to the cathode.