How much electricity does a hydrogen fuel cell produce?

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Kendall Hudson asked a question: How much electricity does a hydrogen fuel cell produce?
Asked By: Kendall Hudson
Date created: Mon, Jun 7, 2021 3:52 PM
Date updated: Sat, Jun 25, 2022 1:58 PM

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A single fuel cell produces approximately 1 volt or less — barely enough electricity for even the smallest applications. To increase the amount of electricity generated, individual fuel cells are combined in series to form a stack.

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fuel cell produces approximately 1 volt or less — barely enough electricity for even the smallest applications. To increase the amount of electricity generated, individual fuel cells

How much voltage does a hydrogen fuel cell produce? A typical hydrogen fuel cell produces 0.5 V to 0.8 V per cell . To increase the voltage individual cells can be connected in series.

1kW fuel cell system with a hydrogen consumption rate of 13 Standard Liter/min. A single fuel cell produces approximately 1 volt or less — barely enough electricity for even the smallest applications. To increase the amount of electricity generated, individual fuel cells are combined in series to form a stack.

A fuel cell, by contrast, can mix hydrogen with air to produce electricity at up to 60 per cent efficiency. Although less efficient than electric batteries, today’s hydrogen fuel cells compare favourably with internal combustion engine technology, which converts fuel into kinetic energy at roughly 25 per cent efficiency.

The typical operating efficiency of a fuel cell running at 0.7 Volts is about 50%. This means that 50% of the energy content of the hydrogen input is converted into electrical energy; while the remaining 50% will be dissipated as heat or lost through incomplete oxidation within the cells.

A fuel cell that is 60% efficient requires 1.666 kWh of chemical energy to generate 1 kWh of electrical energy. Now a kWh equals 3.6 megajoules. A kilogram of hydrogen contains 141.8 megajoules.

can be used outside the fuel cell. The power produced by a fuel cell depends on several factors, including the fuel cell type, size, temperature at which it operates, and pressure at which gases are supplied. A single fuel cell produces roughly 0.5 to 1.0 volt, barely enough voltage for even the smallest applications. To increase the volt-

Pound for pound, hydrogen contains almost three times as much energy as natural gas, and when consumed its only emission is pure, plain water. But unlike oil and gas, hydrogen is not a fuel.

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