Ameer Randolph
Hydrogen fuel cell cars are not popular for several reasons. Hydrogen is very flammable and difficult to store safely. It has no natural source and must be manufactured, which is costly and inefficient. Hydrogen fuel cells are also expensive and require new infrastructure to be built. Electric vehicles (EVs) are generally considered a more efficient and cheaper alternative, with a vast, nationwide electrical system already in place. While hydrogen fuel cell cars can be refuelled quickly and have a long driving range, they are not widely available, and the production of hydrogen fuel cells is energy-intensive.
| Characteristics | Values |
|---|---|
| Cost | Hydrogen fuel cell cars are more expensive than battery-electric vehicles. |
| Lack of infrastructure | Hydrogen fuel cell cars require a new refueling infrastructure, while electric vehicles can utilize the existing electrical grid. |
| Inefficiencies in delivering hydrogen | Hydrogen is difficult and costly to store and transport safely, and the current methods for producing it are inefficient and often rely on fossil fuels, undermining its environmental benefits. |
| Safety concerns | Hydrogen is highly flammable and can make metal brittle. |
| Performance | Hydrogen fuel cell cars may have lower power output compared to electric vehicles. |
| Range | Hydrogen fuel cell cars can offer similar driving ranges to petrol or diesel cars, but electric vehicles are improving in this regard. |
| Refueling time | Hydrogen fuel cell cars can be refueled quickly, but electric vehicles are also getting faster charging times. |
| Environmental impact | Hydrogen fuel cell cars produce zero carbon emissions, but the environmental benefits depend on how the hydrogen is produced. Green hydrogen produced from renewable sources is inefficient and costly, while most hydrogen today is made from fossil fuels. |
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What You'll Learn
- Hydrogen fuel cells are costly to manufacture and require new infrastructure
- Hydrogen is highly flammable and difficult to store
- Hydrogen fuel cells are inefficient, requiring double the energy of electric vehicles
- Hydrogen fuel cell cars are more expensive than comparable gasoline vehicles
- Hydrogen fuel cells are targeted at the aeronautical industry and heavy goods vehicles
Hydrogen fuel cells are costly to manufacture and require new infrastructure
Hydrogen fuel cells are not popular because they are costly to manufacture and require new infrastructure. Hydrogen fuel cell cars (FCEVs) are fuelled with hydrogen from a fuelling station, and the hydrogen is then used to create electricity to power the electric motor. However, the cost of manufacturing hydrogen fuel cells is high, and the process is energy-intensive and inefficient. The usual way to manufacture hydrogen at scale is by stripping it from hydrocarbons, which produces carbon emissions similar to those of fossil fuels. The alternative method, electrolysis, is highly inefficient and would put huge demands on the electricity grid if done at scale.
The production of hydrogen fuel cells requires a significant amount of energy, which contributes to their high cost. The energy must be converted from its original form, such as wind or solar power, into hydrogen through the electrolysis process. This conversion results in a loss of energy, with only about 80% of the original energy available for use in powering the vehicle. As a result, the hydrogen fuel cell requires double the amount of energy compared to electric vehicles, which use electricity directly from the grid.
In addition to the high cost of manufacturing, hydrogen fuel cell cars also face the challenge of lacking the necessary infrastructure for widespread adoption. Building a new hydrogen economy, including the development of hydrogen refuelling stations, is a significant undertaking. Currently, fuel cell vehicles are limited primarily to California, which has most of the country's hydrogen stations, and a few other countries. While there are plans to build more stations in other regions, such as Germany, the roll-out of infrastructure has been slow.
The lack of infrastructure for hydrogen fuel cell cars is in contrast to electric vehicles (EVs), which benefit from a vast, existing electrical system. While EVs also require the development of charging networks, the task is less daunting than building a new hydrogen economy from scratch. As a result, EVs have become more accessible and widely adopted, with an increasing number of charging options available to consumers.
The high cost of manufacturing and the lack of infrastructure for hydrogen fuel cell cars are significant barriers to their popularity. While hydrogen fuel cells offer advantages such as long driving ranges and quick refuelling, the challenges of cost and infrastructure have hindered their adoption.
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Hydrogen is highly flammable and difficult to store
Hydrogen is highly flammable, and its storage is challenging, especially if safety in the event of a severe impact is a priority. Hydrogen tends to make metal brittle, which can be a problem during a collision. Hydrogen fuel cell cars are fuelled with hydrogen from a fuelling station, similar to filling a petrol car. The hydrogen is then used to create electricity to power the electric motor. As a result, hydrogen fuel cell cars consist of several pressurised fuel tanks, which supply the fuel cell stack.
The stack is made up of individual cells, each producing less than one volt of electricity, so hundreds of them are connected to generate enough voltage to power the electric motor. The fuel cell generates electricity by forcing hydrogen to react with oxygen. This process is dangerous, as hydrogen is a highly flammable gas.
Hydrogen is challenging to store due to its physical properties. It is the lightest element and can leak out of containers through small gaps that other gases cannot escape from. It also has a very low energy density, meaning that it requires a large amount of space to store a substantial amount of energy. This makes it impractical for use in vehicles, as it would require a large and heavy storage tank.
Additionally, hydrogen is usually stored at very high pressures, typically 350 bar (5,000 psi) or 700 bar (10,000 psi), which further increases the safety risks associated with its storage. Storing hydrogen safely requires specialised equipment and infrastructure, which can be costly and challenging to implement.
The difficulties in storing hydrogen safely and the highly flammable nature of the gas are significant factors contributing to the lack of popularity of hydrogen fuel cell cars.
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Hydrogen fuel cells are inefficient, requiring double the energy of electric vehicles
Hydrogen fuel cell cars are not popular because of their inefficiency, high cost, lack of infrastructure, and safety concerns. Focusing on the inefficiency aspect, hydrogen fuel cells require double the energy of electric vehicles, making them a less attractive option for consumers and manufacturers.
The inefficiency of hydrogen fuel cells stems from the energy vector transition that the energy must undergo to power a car. In an electric vehicle, the energy travels directly from the source to the car via wires, resulting in minimal energy loss. However, with hydrogen fuel cells, the energy must be converted from wire to gas to wire, leading to significant energy losses. This process is known as the energy vector transition.
To illustrate this, consider a scenario where 100 watts of electricity is produced by a renewable source such as a wind turbine. To power a hydrogen fuel cell vehicle, this energy has to be converted into hydrogen through electrolysis, which is an energy-intensive process. As a result, the overall efficiency of the power-to-vehicle-drive energy chain in a hydrogen fuel cell vehicle is only half that of an electric vehicle, as quoted by BMW.
The inefficiency of hydrogen fuel cells is further exacerbated by the current method of hydrogen production. Most hydrogen is still produced from fossil fuels, which not only raises environmental concerns but also contributes to the carbon emissions associated with its production. While the dream is to switch to "green" hydrogen produced through electrolysis of water, this process is highly inefficient for automotive use, wasting a lot of energy compared to charging an electric vehicle battery.
In addition to the inefficiency of the energy vector transition, hydrogen fuel cell vehicles also face challenges in terms of infrastructure. Unlike electric vehicles that can utilise the existing nationwide electrical system, hydrogen fuel cell vehicles require a separate network of hydrogen refueling stations, which is costly and time-consuming to develop. As a result, hydrogen fuel cell vehicles are currently limited primarily to California and a few other countries with dedicated hydrogen refueling infrastructure.
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Hydrogen fuel cell cars are more expensive than comparable gasoline vehicles
Hydrogen fuel cell cars are not popular because they are more expensive than comparable gasoline vehicles. The cost of hydrogen fuel is high, and the total cost of ownership for hydrogen fuel cell cars is around 40% higher than for gasoline vehicles. This is because hydrogen fuel cells use a lot of expensive materials in large quantities.
The high cost of hydrogen fuel cell cars is due in part to the inefficiencies in delivering hydrogen to customers. The process of manufacturing hydrogen is also costly and inefficient. The usual way to manufacture hydrogen is by stripping it from hydrocarbons, which produces carbon emissions. The alternative method of manufacturing it, electrolysis, is highly inefficient and would place huge demands on the electricity grid if done at scale.
In addition to the high cost of hydrogen fuel, the infrastructure for hydrogen fuel cell cars is lacking. There are few hydrogen refueling stations, which makes it inconvenient for consumers to adopt this technology. This lack of infrastructure is a significant disadvantage compared to electric vehicles, which can take advantage of the existing electrical grid.
Furthermore, the production cycle of hydrogen fuel cells is energy-intensive. The process of converting electricity into hydrogen through electrolysis wastes a lot of energy compared to charging a battery directly. This inefficiency in the energy vector transition makes hydrogen fuel cells less attractive than battery-electric vehicles.
While hydrogen fuel cell cars offer some advantages, such as long driving ranges and quick refueling times, the high cost of ownership and the lack of infrastructure are significant barriers to their widespread adoption. As a result, hydrogen fuel cell cars have struggled to gain popularity compared to comparable gasoline vehicles.
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Hydrogen fuel cells are targeted at the aeronautical industry and heavy goods vehicles
Hydrogen fuel cells are currently more targeted at the aeronautical industry and heavy goods vehicles. This is because the capacity of a battery would not be a viable option for these industries, owing to the miles covered and the time it takes to fill up with hydrogen, which is only a few minutes. In contrast, charging a battery takes much longer, which would be impractical for aeroplanes and long-haul trucking.
While hydrogen fuel cells have their advantages, they also have several disadvantages. Hydrogen is very flammable and difficult to store safely, especially in the event of a severe impact. It also tends to make metal brittle and has no natural source, so it must be manufactured. The usual way to produce it is by stripping it from hydrocarbons, creating the same carbon emissions as fossil fuels. The alternative method of manufacturing it, electrolysis, is highly inefficient and would place huge demands on the electricity grid if done at scale.
Another reason hydrogen fuel cells are not popular is the cost. The cost of hydrogen fuel is high, and the total cost of ownership for hydrogen is about 40% higher than a comparable gasoline vehicle and about 10% more than an electric vehicle. Hydrogen fuel cells also require a lot of expensive materials in large quantities.
While hydrogen fuel cells are not currently popular, this could change in the future. As batteries continue to drop in price, their next logical move could be into heavy-duty vehicles. However, it is unclear if the driving ranges and recharging times of electric vehicles will be suitable for long-haul trucking. Hydrogen, with its long driving ranges, could be a better option. If nations build hydrogen refuelling stations to support trucking, this could also support passenger vehicles.
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Frequently asked questions
Hydrogen fuel cell cars are not popular because they are costly, lack the necessary infrastructure, and are inefficient in delivering hydrogen to customers.
Hydrogen is highly flammable, difficult to store, and tends to make metal brittle. It has no natural source and must be manufactured, which can be done through stripping it from hydrocarbons, thus producing carbon emissions.
Hydrogen fuel cell cars have a range of 400 miles, can be refuelled in minutes, and emit only water.
Hydrogen fuel cell cars are not better than electric cars because they are more expensive, less efficient, and require more energy to power a car.
