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In a fuel cell, reduction takes place at the cathode. This is where oxidants, such as oxygen, gain electrons that have traveled through the external circuit from the anode, where oxidation occurs. The reduction process at the cathode is essential for generating electrical energy in the fuel cell.
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What is the negative electros of eoleaic cell called?
The negative electrode of a fuel cell is called the anode. In the context of a fuel cell, the anode is where the oxidation reaction occurs, typically involving the loss of electrons from the fuel source. This process generates electrons that flow through an external circuit, creating electrical energy.
What is the chemical reaction that takes place when oxygen combines with a combustible at a suitably high temperature?
The reaction is usually considered an oxidation-reduction reaction, and that's what we see in combustion, or fire. In a fire, fuel is combusted, and the fuel is oxidized in the process.
What is the fuel in the combustion reaction that takes place in every cell in your body?
The fuel in the combustion reaction that takes place in every cell in your body is glucose. Glucose is a type of sugar that your body breaks down to produce energy in the form of adenosine triphosphate (ATP) through a process called cellular respiration.
What is the main fuel source for work of the cell?
The main fuel source for the work of the cell is the mitochondria.
What can fuel the chemical reactions in a cell?
chemical energy
What are the two gases used to produce electricity in fuel cells?
The two gases used to produce electricity in fuel cells are hydrogen (H2) as the fuel and oxygen (O2) as the oxidant. In a fuel cell, hydrogen is fed to the anode (negative electrode) and oxygen is supplied to the cathode (positive electrode), where they react to produce water, heat, and electricity through an electrochemical process called the oxidation-reduction reaction.
Is anode a negative electrode of hydrogen - oxygen fuel cell?
No, the anode is the positive electrode in a hydrogen-oxygen fuel cell. At the anode, hydrogen gas is oxidized to produce protons and electrons. The electrons flow through an external circuit to the cathode, where they combine with oxygen and the protons to form water.
What occurs in a half cell?
In a half cell, either oxidation or reduction occurs, depending on whether it is the anode or cathode. The half cell facilitates the electron transfer between the electrode and the electrolyte solution, leading to the generation of electrical potential. This is the basis for the functioning of electrochemical cells such as batteries or fuel cells.
How do fuel cell works?
The hydrogen fuel cell operates similar to a battery. It has two electrodes, an anode and a cathode, separated by a membrane. Oxygen passes over one electrode and hydrogen over the other.The hydrogen reacts to a catalyst on the electrode anode that converts the hydrogen gas into negatively charged electrons (e-) and positively charged ions.The electrons flow out of the cell to be used as electrical energy. The hydrogen ions move through the electrolyte membrane to the cathode electrode where they combine with oxygen and the electrons to produce water. Unlike batteries, fuel cells never run out. In principle, a fuel cell operates like a battery. Unlike a battery, a fuel cell does not run down or require recharging. It will produce energy in the form of electricity and heat as long as fuel is supplied.
What has the author Joseph Singer written?
Joseph Singer has written: 'Evaluation parameters for the alkaline fuel cell oxygen electrode' -- subject(s): Electrodes, Fuel cells, Electrochemistry
How do hydrogen cell work?
The hydrogen fuel cell operates similar to a battery. It has two electrodes, an anode and a cathode, separated by a membrane. Oxygen passes over one electrode and hydrogen over the other.The hydrogen reacts to a catalyst on the electrode anode that converts the hydrogen gas into negatively charged electrons (e-) and positively charged ions.The electrons flow out of the cell to be used as electrical energy. The hydrogen ions move through the electrolyte membrane to the cathode electrode where they combine with oxygen and the electrons to produce water. Unlike batteries, fuel cells never run out. In principle, a fuel cell operates like a battery. Unlike a battery, a fuel cell does not run down or require recharging. It will produce energy in the form of electricity and heat as long as fuel is supplied.
Is Daniell cell a fuel cell?
The Daniell cell (Daniel cell) was invented in 1836 by John Frederic Daniell, a British chemist and meteorologist, and consisted of a copper pot filled with a copper sulfate solution, in which was immersed an unglazed earthenware container filled with sulfuric acid and a zinc electrode. As such it is more akin to a battery than a fuel cell.
What are the cathode and anode in a fuel cell made from?
The cathode in a fuel cell is typically made from a material like platinum, which serves as a catalyst for the oxygen reduction reaction. The anode is usually made from a material like nickel, which helps facilitate the oxidation of the fuel.
What are the reactants for a hydrogen fuel cell and what is the product?
The reactants for a hydrogen fuel cell are hydrogen gas (H2) and oxygen gas (O2), and the product is water (H2O). The reaction in the fuel cell involves the oxidation of hydrogen at the anode and reduction of oxygen at the cathode, with the flow of electrons creating an electric current.
What types of material can a fuel cell be made of?
There are 3 main types of a Fuel Cell. 1. Hydrogen Fuel Cell. This is the main one people use nowadays. 2. Solid Oxide Fuel Cell. 3. Alkaline Fuel cell. Made from Alkaline metals.
What is remarkable about fuel cells?
The only thing that comes out of the tailpipe is water! The other not so remarkable thing is the price. A fuel cell is made up of two electrodes, and each one is an ion-transfer membrane (allows ions to pass through but not air or liquid). In between these membranes is a liquid called electrolyte, whose job is to carry ions from one electrode to the other. On the far side of the cathode (negatively charged electrode), hydrogen is pumped in, and on the far side of the anode (positively charged electrode), oxygen or air is pumped in. At the cathode, hydrogen is stripped of its electrons, which get removed by the electrode. This electricity is used to power lights, ovens, computers, etc.. The remaining hydrogen ions flow through the electrolyte and converge on the anode. On the return trip the electrons get fed into the anode where they are picked up by oxygen atoms, which then combine with the hydrogen ions to form water. Viola, you have a fuel cell. The reason they are so expensive is because, at the anode, a catalyst such as platinum has to be used to help the reaction along. The other issue that is preventing widespread use of the fuel cell is that an effective hydrogen distribution system is not in place. You could have a fuel cell car, but where would you buy hydrogen?
What main part of a fuel cell is made out of a polymer?
The membrane electrode assembly (MEA) is the main part of a fuel cell that is made out of a polymer. It consists of a polymer electrolyte membrane sandwiched between two catalyst-coated electrodes. The polymer membrane allows for the movement of ions while blocking the passage of gases.
