What is the Principle of Hydrogen Cars?

[LaLukas]

Hydrogen is fed into the fuel cell, where the electrons of hydrogen atoms are blocked by the proton exchange membrane and conducted from the negative electrode to the positive electrode through an external circuit, becoming electricity to drive the motor. Protons, however, can pass through the proton exchange membrane and combine with oxygen to form pure water mist, which is then discharged. Here is more information about hydrogen cars: 1. Brief Description: Hydrogen fuel vehicles refer to vehicles that use hydrogen as the primary energy source for movement. While conventional internal combustion engines typically use diesel or gasoline, hydrogen cars use gaseous hydrogen instead. 2. Advantages: The emission is pure water, producing no pollutants during operation, thus protecting the natural environment.

[PhoebeAnn]

I've studied the working mechanism of hydrogen-powered vehicles, which essentially use fuel cells to convert hydrogen into electricity to drive the car. The whole process is quite fascinating: high-pressure hydrogen tanks supply hydrogen that enters the fuel cell stack and reacts with oxygen from the air. With the help of catalysts like platinum, hydrogen molecules split into electrons and hydrogen ions; the electrons flow through a circuit to generate electric current, powering the motor while excess electricity is stored in a small battery for backup. The hydrogen ions combine with oxygen to form water vapor, which is emitted as the only byproduct—far more environmentally friendly than internal combustion engines, with zero pollution. Additionally, the power output is smooth, providing quick and quiet acceleration. For daily use, refueling with hydrogen is fast, taking about five minutes to cover 500-600 kilometers, unlike charging stations that require hours of waiting. However, hydrogen tanks require special materials to ensure safety, as storage pressure reaches up to 70 MPa, so vehicle designs emphasize leak-proof testing. I've also noticed that startup might be slightly slower in cold temperatures, but overall, hydrogen vehicles have a clear advantage over battery-electric cars in terms of range, especially for long-distance travel.

[DiSarah]

I've driven hydrogen cars a few times, and the driving experience is amazing. The acceleration is smooth and quiet, just like driving an electric car. In principle, it doesn't use an engine that explodes and burns, but rather hydrogen generates electricity in the fuel cell to drive the motor. After starting, the power is abundant, without the vibration or exhaust noise of a gasoline car, only a slight water vapor coming out of the tailpipe, causing zero pollution to the air. The ride is smooth and comfortable, suitable for city traffic jams or highway cruising. The refueling process is very convenient, taking just a few minutes to get back on the road, avoiding the time wasted on charging. The range is long, reducing range anxiety, but the practical issue is that hydrogen stations are too few and the cost is relatively high. I think it will become more practical once it's widely adopted in the future, as the technology is still maturing.

[OConnor]

I'm passionate about eco-friendly transportation, and the principle of hydrogen vehicles excites me: through fuel cells, hydrogen reacts to generate electricity and water vapor to power the vehicle, achieving zero emissions throughout the entire process, unlike gasoline-powered cars that release harmful exhaust. This technology helps reduce urban air pollution and greenhouse gases. In practical operation, the byproduct of pure water can be recycled or naturally evaporated, ensuring efficient resource utilization. If the hydrogen is sourced from renewable energy, such as wind power electrolysis of water, it achieves low carbon emissions throughout its entire lifecycle. Although the current infrastructure is insufficient, widespread adoption could accelerate the green transformation of transportation and protect the planet.