What are the advantages of fuel cell vehicles? What are the characteristics of fuel cells?

Hello, the following is an introduction to the disadvantages of fuel cell vehicles.

Advantages: 1) Emissions are almost zero.

The fuel used in the fuel is hydrogen DAO and oxygen, and the product is clean water. It works on its own without producing CO and CO2, with no sulfur and particulate emissions, no high-temperature reactions, and no NOx. If hydrogen is supplied with an on-board methanol reforming catalytic converter, only a small amount of CO2 and a small amount of CO2 will be generated.

2) High energy conversion efficiency.

The energy conversion efficiency of fuel cells can be as high as 60% to 80%, which is 2 to 3 times that of internal combustion engines.

3) Long life.

The fuel cell itself works without noise, no movement, no vibration, and its electrodes are only used as a place for chemical reactions and a channel for conduction, and they do not participate in chemical reactions, have no loss, and have a long life.

4) Fuel ** extensive.

Hydrogen fuel** is widely available and can be obtained from renewable sources and does not rely on petroleum fuels.

Disadvantages: 1. At present, the comprehensive energy conversion rate of most hydrogen fuel cells is far less high than that of pure electric vehicles, and if it is a renewable method, the efficiency is generally more than that of power generation as a by-product of the polluting production process; If hydrogen is produced by electricity, a process that causes energy loss is added in vain. Taken together, the energy consumption of driving alone may not be as economical and environmentally friendly as that of pure electric or plug-in hybrid.

2. Hydrogen fuel cell technology is not mature enough.

The cost is high, and there is a lack of hydrogen refueling infrastructure, and like the construction of charging stations, there is a chicken or an egg first, like car charging, in the early stage, you can use more family equipment to promote popularization, and slowly expand to public charging piles and large fast charging stations, and can only be adjusted to large hydrogen refueling stations in one step. In the early days, there was a lot of resistance to infrastructure promotion, which in turn made it difficult to expand the sales of fuel cell vehicles. This is the biggest bruise.

3. In addition, how to fill fuel cell vehicles for power generation is a problem.

Fuel cell electric vehicle (FCEV) is a vehicle that uses hydrogen and oxygen in the air under the action of a catalyst to drive the electric energy generated by electrochemical reaction in a fuel cell as the main power source. Fuel cell electric vehicles are essentially a type of pure electric vehicles, and the main difference is that the working principle of the power battery is different. Generally speaking, fuel cells convert chemical energy into electrical energy through electrochemical reactions, and the reducing agent required for electrochemical reactions generally uses hydrogen, and the oxidant uses oxygen, so the earliest development of fuel cell electric vehicles is mostly directly using hydrogen fuel, and hydrogen storage can be in the form of liquefied hydrogen, compressed hydrogen or metal hydride hydrogen storage.

Advantages: 1. Zero emission or near-zero emission.

2. Reduce the water pollution caused by oil leakage.

3. Reduce greenhouse gas emissions.

4. The conversion efficiency of the fuel battery is high (about 60%), and the fuel economy of the whole vehicle is good.

5. Smooth operation and no noise.

Disadvantages: Fuel cells are expensive and expensive to use (hydrogen).

Fuel cell vehicles have several advantages: zero or near-zero emissions. Reduce water contamination from oil leaks. Reduced greenhouse gas emissions. Improved fuel economy. Improves engine combustion efficiency. Smooth and noiseless operation.

The catalysts used in hydrogen fuel cell vehicles have a short service life and a short service life. Hydrogen is a colorless gas. Burning one gram of hydrogen energy releases 142 kilojoules, three times more than gasoline.

The product of its combustion is water, which has no ash and exhaust gases, and does not pollute the environment. Hydrogen is very light, much lighter than gasoline, natural gas, and kerosene, making it inconvenient to carry and transport, but hydrogen as a fuel is still considered the most desirable energy source for the 21st century. The outstanding characteristics of hydrogen fuel as an energy source are pollution-free, high-efficiency, and usability.

A fuel cell vehicle can also be considered an electric vehicle, but instead of waiting hours for it to be recharged, you can fully fuel the battery in 5 minutes. Fuel cell vehicles are also electric vehicles, but the "battery" is a hybrid fuel cell. In contrast to conventional chemical batteries, fuel cells can be used to replenish fuel, usually hydrogen.

Some fuel cells can use methane and gasoline as fuel, but their use is usually limited to industrial areas such as power plants and forklifts.

Compared with conventional vehicles, fuel cell vehicles have the following advantages:

1. Zero emission or near-zero emission;

2. Reduce the water pollution caused by oil leakage.

3. Reduce greenhouse gas emissions.

4. Improved fuel economy;

5. Improve the combustion efficiency of the engine;

6. Smooth operation and no noise.

The advantages of fuel cell vehicles, I personally think that the main thing is that they are relatively more energy-saving and environmentally friendly, but the disadvantage is that they are still relatively poor in terms of value retention.

A fuel cell is a power generation device that converts the chemical energy present in the fuel and oxidizer directly into electrical energy. Fuel and air are fed into the fuel cell, and electricity is produced wonderfully. It looks like a storage battery with positive and negative electrodes and electrolytes, but in essence, it cannot "store electricity" but is a "power plant".

The concept of fuel cells was introduced in 1839 and has a history of about 160 years.

Fuel cells are very complex and combustion, involving the relevant theories of chemical thermodynamics, electrochemistry, electrocatalysis, materials science, power system and automatic control, etc., which have the advantages of high power generation efficiency and less environmental pollution. Overall, fuel cells have the following characteristics:

1) High energy conversion efficiency: It directly converts the chemical energy of the fuel into electrical energy, without going through the combustion process in the middle, so it is not limited by the Carnot cycle. At present, the fuel-to-electricity conversion efficiency of fuel cell systems is 45% to 60%, while the efficiency of thermal power generation and nuclear power is about 30% to 40%.

2) Harmful gases SOX, NOx and noise emissions are very low, CO2 emissions are greatly reduced due to high energy conversion efficiency, and there is no mechanical vibration.

3) The fuel has a wide range of applications.

4) The building block is strong in scale and flexible in installation location, the fuel cell power station occupies a small area, the construction period is short, and the power of the power station can be withered and assembled by the battery stack according to the need, which is very convenient. Fuel cells are very suitable for centralized power stations, distributed power plants, and independent power stations for residential areas, factories, and large buildings.

5) The load response is fast, the operating quality is high, the fuel cell can be converted from the lowest power to the rated power in a few seconds, and the power plant can be very close to the load, so as to improve the regional frequency fuel cell principle rate offset and voltage fluctuation, reduce the existing substation equipment and current carrier capacity, and reduce the state failure of the transmission line investment and line loss.

Advantages and disadvantages of fuel cells Advantages of fuel cells: high power generation efficiency: fuel cell power generation is not subject to the Carnot cycle.

restrictions. Theoretically, its power generation efficiency can reach 85% to 90%, but due to the limitations of various polarizations during operation, the current energy conversion efficiency of fuel cells is about 40% 60%. Combined heat and power (CHP) can be used to achieve a total fuel utilization rate of more than 80%.

Environmental pollution is a small fuel when carbon dioxide is fueled by hydrogen-rich gases such as natural gas.

The emissions are reduced by more than 40% compared to the heat engine process. Envy of the year.

Fuel cell is a new type of power generation device that directly converts chemical energy into electrical energy, with low heat loss and power generation efficiency of up to 40-60%, which is 5-20% higher than thermal power generation.

In addition, in addition to using heat exhaust to generate electricity, fuel cells can also produce steam or hot stuffy water, so its comprehensive efficiency can reach about 80%, and urban combined heat and power can be realized.

Fuel cells have high efficiency and long service life.

1. High power generation efficiency.

Fuel cell power generation is not limited by the Carnot cycle. Theoretically, its power generation efficiency can reach 85% to 90%, but due to the limitations of various polarizations during operation, the current energy conversion efficiency of fuel cells is about 40% 60%. Combined heat and power (CHP) can be used to achieve a total fuel utilization rate of more than 80%.

2. Low environmental pollution.

When fuel cells are fueled by hydrogen-rich gases such as natural gas, CO2 emissions are reduced by more than 40% compared to the heat engine process, which is important for mitigating the global warming effect. In addition, because the fuel gas of the fuel cell must be desulfurized before the reaction, and the electricity is generated according to the electrochemical principle, there is no high-temperature combustion process, so there is almost no emission of nitrogen and sulfur oxides, which reduces the pollution to the atmosphere.

3. High specific energy.

The specific energy of liquid hydrogen fuel cells is 800 times that of nickel-cadmium batteries, and the specific energy of direct methanol fuel cells is more than 10 times higher than that of lithium-ion batteries (the most energy-dense rechargeable batteries). At present, although the actual specific energy of fuel cells is only 10% of the theoretical value, it is still much higher than the actual specific energy of ordinary batteries.

4. Low noise.

The fuel cell has a simple structure, few moving parts, and low noise during operation. Even in the vicinity of an 11MW fuel cell power plant, the measured noise is less than 55dB.

5. Easy to build.

The fuel cell has a simple structure, few moving parts, and low noise during operation. Even in the vicinity of an 11MW fuel cell power plant, the measured noise level is less than 55dB.

6. Wide range of fuels.

For fuel cells, as long as the substance containing hydrogen atoms can be used as fuel, such as natural gas, oil, coal and other fossil products, or biogas, alcohol, methanol, etc., so fuel cells are very suitable for energy diversification and can slow down the depletion of mainstream energy.

7. High reliability.

When there is a change in the load of the fuel cell, it responds quickly. Whether it is operating above or below rated power, it can withstand with little change in efficiency. Due to the highly reliable operation of fuel cells, they can be used as various emergency power sources and uninterruptible power supplies.

Disadvantages of fuel cells.

1. High cost.

In particular, the initial construction cost is still higher than that of generators, so it is difficult to promote, although with the advancement of technology, the cost is also decreasing, but there is still a way to go.

2. High technical threshold.

When there is a change in the load of the fuel cell, it responds quickly. Whether it is operating above or below rated power, it can withstand with little change in efficiency. Due to the highly reliable operation of fuel cells, they can be used as various emergency power sources and uninterruptible power supplies.

3. Infrastructure is required.

When there is a change in the load of the fuel cell, it responds quickly. Whether it is operating above or below rated power, it can withstand with little change in efficiency. Due to the highly reliable operation of fuel cells, they can be used as various emergency power sources and uninterruptible power supplies.

A fuel cell is a chemical energy that is applied to a fuel.

A chemical device that converts directly into electrical energy, also known as an electrochemical generator. Many friends don't know the advantages of fuel cells, so what are the advantages of fuel cells?

1. High power generation efficiency: fuel cell power generation is not subject to the Carnot cycle.

restrictions. Theoretically, the power generation efficiency of the battery can reach 85% to 90%, but due to the limitation of the polarization of each panicle during operation, the current energy conversion efficiency of the fuel cell is about 40% 60%. Combined heat and power (CHP) can be used to achieve a total fuel utilization rate of more than 80%.

2. Low noise: The fuel cell has a simple structure, few moving parts, and low noise during operation.

3. High reliability: When the load of the fuel cell changes in the guessing operation, it will respond quickly. Regardless of the rated power.

The above overload operation or below the rated power can be tolerated and the efficiency does not change much. It is highly reliable in the operation of fuel cells and can be used as a variety of emergency power and uninterruptible power supplies.

Use. The above is an introduction to the advantages of fuel cells, I hope it will be helpful to friends.

Long battery life, truly environmentally friendly, all that is discharged is water.

Advantages: Reduced pollution and high economy: Cars that use clean gasoline will greatly reduce hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx) in exhaust emissions, which is good for everyone.

Fuel saving: The fuel system is clean, the degree of atomization of the oil is improved, the mixture is completely combusted, and the power is maximized.

Improved driving performance: The engine is easy to start, the revs are smooth, and the acceleration performance is good.

The ride is comfortable.

The security is relatively good.

Disadvantages: The technology is not very mature, and the structure is more complex than other fuel cells.

The advantage of fuel cell vehicles is that they are energy-saving and environmentally friendly. Fuel cell vehicles can achieve zero or near-zero emissions, and do not produce any pollutants when driving; Reduced water pollution and greenhouse gas emissions from oil leaks; High energy conversion efficiency and energy saving. A fuel cell is a non-burning fuel, a high-efficiency power generation device that directly converts the chemical energy of the fuel into electrical energy through electrochemical reactions.

The fuel used in on-board fuel cell units is either high-purity hydrogen or high-hydrogen reforming gas obtained by reforming hydrogen-containing fuels. The difference in power compared to regular electric vehicles is that FCVs (Fuel Cell Vehicles) use power from on-board fuel cell units, and electric vehicles use power from grid-charged batteries. How fuel cell vehicles work:

Fuel hydrogen reacts with atmospheric oxygen in the vehicle's fuel cell to generate electric energy to drive the motor, which drives the mechanical transmission structure in the vehicle, and then drives the vehicle's front axle (or rear wheel axle) and other mobile mechanical structures to work, thereby driving the electric vehicle forward. The reaction of the fuel cell results in very low carbon dioxide and nitrogen oxides, and the by-product mainly produces water, hence the name "new green car".