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4220Fox
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Can anyone help me explain the elements of the fuel cell polarization curve. Please be sure to include Etn, Er, and the various polarizations. I am interested by the use of thermodynamics as well... Thank you-
A fuel cell is an electrochemical device that converts chemical energy from a fuel, such as hydrogen or methanol, into electricity. It works by combining the fuel with an oxidant, typically oxygen from air, and passing them over two electrodes separated by an electrolyte. This process produces electricity, heat, and water as byproducts.
Etn and Er are both elements on the periodic table, with Etn standing for Element 118 and Er standing for Element 68. The main difference between them is their atomic number, or the number of protons in their nucleus. Etn has an atomic number of 118, making it the heaviest element known, while Er has an atomic number of 68.
A fuel cell generates electricity through an electrochemical reaction, where the fuel and oxidant are combined at the anode and cathode electrodes. The fuel, which is usually hydrogen, is oxidized at the anode, releasing electrons. These electrons then flow through an external circuit to the cathode, where the oxidant, typically oxygen, is reduced. This flow of electrons creates a current, which can be used to power electronic devices.
Polarization in a fuel cell refers to the decrease in efficiency and performance that can occur over time due to various factors such as electrode material, operating conditions, and fuel impurities. It can result in a decrease in the cell's voltage output and a decrease in its overall efficiency. To combat polarization, fuel cells often require maintenance and monitoring to ensure optimal performance.
Polarizations can have a significant impact on the lifespan of a fuel cell. The decrease in efficiency and performance can lead to premature wear and tear on the cell's components, shortening its lifespan. In addition, if not properly managed, polarizations can cause irreversible damage to the cell, reducing its overall lifespan. Regular maintenance and monitoring can help mitigate the effects of polarizations and extend the life of a fuel cell.