Ameer Randolph
Hydrogen fuel cell cars are an increasingly popular type of clean energy vehicle. Unlike electric vehicles, they don't need to be charged by plugging into a power outlet or charger. Instead, hydrogen fuel cell cars are powered by hydrogen gas, which is pumped into the vehicle's tank in a similar way to how a conventional car is refuelled with petrol or diesel. The hydrogen is stored in a tank on board the vehicle and is used to produce electricity to power the car's electric motor. The process of refuelling a hydrogen fuel cell car is quick and convenient, taking between 3-5 minutes for a full tank. However, the lack of availability of hydrogen fuelling stations remains a challenge for the commercialisation of these vehicles.
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What You'll Learn
- Hydrogen fuel cell cars don't need to be charged like electric vehicles
- Hydrogen fuel is pumped into the car in the same way as conventional cars
- Hydrogen fuel is measured in kilograms, not gallons
- Hydrogen fuel cell vehicles are powered by electricity converted from hydrogen
- Hydrogen fuel cell vehicles are more efficient than traditional gasoline vehicles
Hydrogen fuel cell cars don't need to be charged like electric vehicles
Hydrogen fuel cell cars, also known as Fuel Cell Electric Vehicles (FCEV), use hydrogen and oxygen to generate electricity and power the vehicle. Unlike electric vehicles, which need to be plugged in and charged, hydrogen fuel cell cars are refuelled with hydrogen gas, which is pumped into the vehicle's fuel tank in a similar way to how you would fill up a conventional petrol or diesel car. This process takes between 3-5 minutes for a full tank.
The hydrogen gas is stored in the vehicle's fuel tank until it is needed by the fuel cell. When the car is running, the hydrogen is combined with oxygen from the air in a fuel cell stack, which produces electricity to power the vehicle. This electricity is then managed by a power electronics controller, which controls the speed and torque of the electric traction motor.
One example of a hydrogen fuel cell car is the Toyota Mirai, which has a driving range of up to 402 miles when fully fuelled with hydrogen. The Mirai also comes with a fuel card, allowing owners to swipe and start filling up at hydrogen fuelling stations. As of 2021, there were over 100 hydrogen fuelling stations in Europe, with more set to open.
While hydrogen fuel cell cars are less common than electric vehicles, they offer a zero-emission alternative to traditional petrol or diesel cars. They are also technically a series hybrid, as they use a fuel-cell stack instead of a large, heavy battery, and are sometimes classified as fuel-cell hybrid electric vehicles (FCHEV).
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Hydrogen fuel is pumped into the car in the same way as conventional cars
Unlike electric vehicles, hydrogen fuel cell cars don't need to be charged. Instead, they are fuelled with hydrogen gas, which is pumped into the car in the same way as conventional cars. This means that, to refuel, you simply drive up to a pump at a fuelling station, insert the pump into the tank gasket, and wait for the tank to fill. Filling a hydrogen fuel cell car takes the same amount of time as filling a conventional car—between 3 and 5 minutes for a full tank.
The process of refuelling a hydrogen fuel cell car is very similar to refuelling a conventional car, but there are some important differences to be aware of. Firstly, hydrogen fuel is measured in kilograms, not gallons. A full tank for a Toyota Mirai, for example, is approximately five kilograms, which costs around $16. Secondly, hydrogen fuelling stations are less common than petrol stations, so you may need to plan your refuelling stops in advance. In California, for example, you can check the state's Fuel Cell Partnership website to see if pumps are "online". Finally, while hydrogen fuel cell cars are powered by clean energy and emit only water vapour and warm air, the hydrogen production process is not yet sustainable.
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Hydrogen fuel is measured in kilograms, not gallons
Hydrogen fuel cell cars are refuelled with hydrogen gas, which is pumped in the same way as a conventional petrol or diesel car. However, unlike petrol or diesel, hydrogen fuel is measured in kilograms and not gallons. This is because hydrogen is stored as a compressed gas, and the amount of energy it provides depends on its mass, not its volume.
The vehicle manufacturer determines the power of a fuel cell car during the design process by specifying the size of the electric motor(s) that receives electric power from the appropriately sized fuel cell and battery combination. The amount of energy stored on board is determined by the size of the hydrogen fuel tank.
A fuel cell stack is an assembly of individual membrane electrodes that use hydrogen and oxygen to produce electricity. The hydrogen is stored in a fuel tank on board the vehicle until it is needed by the fuel cell. A power electronics controller manages the flow of electrical energy delivered by the fuel cell and the traction battery, controlling the speed of the electric traction motor and the torque it produces.
Hydrogen fuel is typically sold by the kilogram, and the price can vary depending on various factors such as production costs, distribution costs, and taxes. When comparing the cost of hydrogen fuel to gasoline, conversion factors can be used to calculate the gasoline gallon equivalent (GGE) of hydrogen fuel. This allows for a more direct comparison of the two fuels in terms of their energy content and cost.
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Hydrogen fuel cell vehicles are powered by electricity converted from hydrogen
The process of filling up a hydrogen fuel cell vehicle is almost identical to that of a typical gas-powered vehicle. The driver pulls up to a pump at a fuelling station, inserts the nozzle into the receptacle on the vehicle, and fills the tank with hydrogen. Filling a hydrogen fuel cell vehicle takes a similar amount of time to filling a conventional car, between 3 and 5 minutes for a full tank. However, the lack of availability of hydrogen fuelling stations remains a key challenge to the commercialisation of hydrogen fuel cell vehicles.
Hydrogen fuel cell vehicles are considered clean energy vehicles as they do not combust fossil fuels when in use. They emit only water vapour and warm air, reducing the amount of emissions and noise pollution added to the environment. They are also more efficient than traditional gasoline vehicles, with many models of hydrogen fuel cell vehicles having a driving range of up to 380 miles.
The amount of energy stored in a hydrogen fuel cell vehicle is determined by the size of the hydrogen fuel tank, rather than the size of the battery as in an all-electric vehicle. Hydrogen fuel cell vehicles also use regenerative braking, a mechanism that uses the friction created from stepping on the brake pedal to charge the battery.
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Hydrogen fuel cell vehicles are more efficient than traditional gasoline vehicles
Secondly, hydrogen fuel cell vehicles have a longer driving range of over 300 miles, which is comparable to that of gasoline vehicles. This is due to the higher energy density of hydrogen, allowing for more energy to be stored on board the vehicle. Additionally, refuelling a hydrogen fuel cell vehicle is similar to refuelling a conventional car, taking only 3-5 minutes for a full tank.
Furthermore, hydrogen fuel cell vehicles are more efficient in terms of energy conversion. The hydrogen fuel cell stack, an assembly of individual membrane electrodes, efficiently converts hydrogen and oxygen into electricity to power the vehicle. This process is more direct and has fewer energy losses compared to the complex internal combustion process in traditional gasoline engines.
While the cost of hydrogen fuel remains a challenge, with the total cost of ownership for hydrogen vehicles being higher, advancements in technology and infrastructure development are working to address these issues. Hydrogen can be produced from diverse domestic resources, including natural gas, coal, solar energy, wind, and biomass, strengthening national energy security and diversifying transportation energy options.
In conclusion, hydrogen fuel cell vehicles offer improved efficiency over traditional gasoline vehicles in terms of environmental impact, driving range, refuelling convenience, and energy conversion. As the infrastructure for hydrogen fuel continues to develop and costs hopefully decrease, hydrogen fuel cell vehicles could become an even more attractive alternative to traditional gasoline vehicles.
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Frequently asked questions
Fuel cell cars, also known as FCEVs, use hydrogen fuel to power their electric motors. Unlike electric vehicles, you don't charge them by plugging them into a power outlet or charger. Instead, you fill the tank with hydrogen gas at a fuelling station, in the same way you would with a conventional petrol or diesel car.
Fuel cell cars have an assembly of individual membrane electrodes, known as a fuel cell stack, that use hydrogen and oxygen to produce electricity. This electricity then powers the electric motor.
Filling a fuel cell car with hydrogen takes the same amount of time as filling a conventional car with petrol or diesel: between 3 and 5 minutes for a full tank.
The cost of hydrogen fuel is higher than gasoline prices. In California, for example, it costs about $16 per kilogram of hydrogen gas. However, some car manufacturers, such as Toyota, offer incentives to offset this cost.
