Sylvie Willis
Hydrogen fuel-cell vehicles (HFCVs) are an innovative, dynamic, and environmentally friendly alternative to conventional cars. With only three models currently available on the market, they are a much rarer type of vehicle than electric cars. HFCVs use a fuel cell stack to generate electricity by combining hydrogen and oxygen, powering the vehicle with zero emissions. So, how long does a hydrogen fuel cell last in a car?
| Characteristics | Values |
|---|---|
| Longevity | The fuel cell stack is engineered to last for the lifetime of the car. Automakers of passenger cars aim for a fuel cell stack lifespan of at least 5,000 hours or approximately 150,000-200,000 miles. |
| Safety | Hydrogen fuel cell cars are as safe as conventional vehicles. |
| Refueling | Hydrogen vehicles are refueled through special pumps. The refueling time is similar to that of a conventional car, taking around five minutes. |
| Electricity Generation | The electricity in the fuel cell can either flow to the electric motor or charge a battery for temporary storage. |
| Emission | Hydrogen fuel cell vehicles are zero-emission vehicles, emitting only water vapor. |
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What You'll Learn
- Hydrogen fuel cells can last the lifetime of a car
- Automakers aim for a fuel cell stack lifespan of 5,000 hours or 150,000-200,000 miles
- Hydrogen vehicles produce electricity themselves
- Hydrogen fuel-cell vehicles are zero-emission vehicles
- Hydrogen fuel-cell vehicles are safer than conventional vehicles
Hydrogen fuel cells can last the lifetime of a car
Hydrogen fuel cells are designed to produce electricity using hydrogen from the tank and oxygen from the air. This electricity is then used to power the car. A fuel cell will create a current as long as it has fuel. When the fuel supply is shut off, the reaction stops and so does the current.
Hydrogen fuel cells are a zero-emission vehicle technology, emitting only water vapour. Hydrogen vehicles produce electricity themselves, meaning their power does not come from a built-in battery. Instead, they have their own power plant on board, which converts hydrogen in the fuel tank into electricity. This electricity is then used to power the vehicle and/or charge a battery.
Hydrogen fuel cell cars are similar to electric cars in terms of safety and driving experience. They are also refuelled in the same safe way as conventional cars. However, hydrogen fuel cell cars do not require long charging times like electric cars.
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Automakers aim for a fuel cell stack lifespan of 5,000 hours or 150,000-200,000 miles
The fuel cell has an anode, a cathode, and a membrane coated with a catalyst. Hydrogen enters from the anode side and oxygen from the cathode side. When the hydrogen molecules come into contact with the catalyst, a chemical reaction occurs, converting the energy stored in the hydrogen into an electric current. This current continues as long as there is fuel. When the fuel supply is shut off, the reaction and the current stop.
Fuel cell stacks are designed to be durable and reliable, with some automakers offering warranties of 100,000 km. Additionally, take-back schemes ensure that fuel cell stacks can be reused or disposed of safely and responsibly at the end of their life.
Hydrogen fuel cell vehicles offer several advantages, including zero emissions, reduced fueling times compared to electric vehicles, and the ability to recover braking energy. However, they are much rarer than electric vehicles, with far fewer hydrogen-powered vehicles on US roads as of mid-2022.
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Hydrogen vehicles produce electricity themselves
Hydrogen fuel-cell vehicles (HFCVs) are related to electric cars but differ in how they generate electricity. HFCVs produce electricity on board using hydrogen from the tank and oxygen from the air. This is in contrast to electric vehicles, which draw electricity from a battery.
The hydrogen fuel cell stack, also known as the power plant, combines hydrogen and oxygen to produce electricity. Hydrogen enters the anode side of the fuel cell and oxygen enters from the cathode side. When the hydrogen molecules come into contact with the catalyst, a chemical reaction converts the energy stored in the hydrogen into an electric current. This process will continue as long as the fuel cell has fuel.
The fuel cell stack in a hydrogen-powered car is engineered to last for the lifetime of the car, with the same quality, durability, and reliability as a conventional petrol or diesel car. Automakers of passenger cars typically aim for a fuel cell stack lifespan of at least 5,000 hours or approximately 150,000-200,000 miles. Toyota, for example, offers a 100,000 km warranty on its Mirai model, which can power 650 km on a single tank of hydrogen.
Hydrogen has great potential as an energy carrier for vehicles in the future, as well as for heat, electricity, and industry. Hydrogen can be produced anywhere with access to electricity and water, and its storage and transport capabilities make it suitable for a wide range of applications. However, the efficiency of the entire energy chain, from electricity production to vehicle operation, is currently only half that of a battery-electric vehicle.
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Hydrogen fuel-cell vehicles are zero-emission vehicles
Hydrogen fuel-cell vehicles are marketed as having the same safety standards as any other vehicle on the road. They undergo extensive safety testing before being released to the public, and hydrogen itself is argued to be a safe energy carrier. Hydrogen cars are also designed with durability in mind, aiming for a fuel cell stack lifetime that matches the longevity of a typical vehicle engine in that category. Automakers of passenger cars often aim for a fuel cell stack lifespan of at least 5,000 hours or approximately 150,000-200,000 miles.
Hydrogen fuel-cell vehicles offer several advantages over traditional combustion engine vehicles and battery-electric vehicles. They produce zero local emissions, with water vapour being the only byproduct emitted from the exhaust pipe. This makes them a much cleaner alternative to traditional combustion engine vehicles, which release harmful pollutants and contribute to climate change. Additionally, hydrogen vehicles do not suffer from long charging times like battery-electric vehicles.
However, hydrogen fuel-cell vehicles also have some drawbacks. Firstly, they are much rarer than electric vehicles, with far fewer models available on the market. This is partly due to the limited infrastructure for hydrogen fuelling stations, which are currently only available in California. Additionally, the production of pure hydrogen for vehicles requires a significant amount of energy, and most hydrogen today is derived from fossil fuels, which produces CO2 as a byproduct. Despite these challenges, transportation experts remain hopeful about the potential of hydrogen fuel-cell technology as an emission-free alternative.
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Hydrogen fuel-cell vehicles are safer than conventional vehicles
Hydrogen fuel-cell vehicles are designed to be as safe as, if not safer than, conventional vehicles. Hydrogen fuel cells are engineered to last for the lifetime of the car, with some automakers aiming for a fuel cell stack lifespan of at least 5,000 hours or approximately 150,000-200,000 miles. This is comparable to the longevity of a typical vehicle engine in the same category.
One of the biggest advantages of hydrogen fuel-cell vehicles is their inherent safety. Hydrogen fuel-cell vehicles do not rely on combustion for power, instead, they use a safe chemical transfer process. This eliminates the risk of fuel ignition and makes them safer than traditional combustion engines. Hydrogen fuel-cell cars are also packed with safety features and redundancies that address potential weaknesses, ensuring their reliability.
Another key safety aspect of hydrogen fuel-cell vehicles is the non-toxic nature of hydrogen. Hydrogen is completely non-toxic and non-poisonous to humans, reducing the threats associated with handling fuel compared to fossil fuels. This makes hydrogen a safer option for both drivers and the wider public.
Additionally, hydrogen fuel-cell vehicles contribute to a safer planet for all. Hydrogen fuel cells are more environmentally friendly than conventional fuels. By adopting a hydrogen-first model, automakers can significantly reduce the transportation industry's impact on climate change, making the world a safer place for every individual.
While hydrogen fuel-cell vehicles have faced challenges with the availability of hydrogen fuel and the limited infrastructure for refueling, they remain a safe and sustainable option for drivers. Hydrogen fuel is refuelled in the same safe manner as conventional cars, and advancements in hydrogen fuel cell technology will only enhance its safety profile.
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Frequently asked questions
A hydrogen fuel cell will last as long as it has fuel. When the fuel supply is shut off, the reaction stops and so does the current. Automakers aim for a fuel cell stack lifetime that matches the longevity of a typical vehicle engine in that category.
The fuel cell stack in a Toyota Mirai is engineered to last for the lifetime of the car. It comes with a 100,000 km warranty and a take-back scheme that ensures the fuel cell stack can be reused or dealt with safely.
Automakers of passenger cars aim for a fuel cell stack lifespan of at least 5,000 hours or approximately 150,000-200,000 miles.
Hydrogen fuel cells use the same electric motor to turn the wheels as battery-electric cars, but they are powered by a fuel cell stack. Hydrogen passes through a membrane in the fuel cell stack to combine with oxygen from the air, producing electricity and water vapour.
Hydrogen cars are refuelled with hydrogen gas, pumped in the same safe way as a conventional car.
