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With the rapid development of society, our fuel power lithium battery is also developing rapidly. So you understand the detailed information of the fuel-powered lithium battery? Next, let Xiaobian lead everyone to learn more about the knowledge. Fuel power battery is an energy conversion device.
Unlike energy storage equipment such as lithium ion batteries, the fuel-driven battery pack can be directly converted to electrical energy by electrochemical reaction. On the other hand, the lithium ion battery is charged for a long time to store energy, and to discharge to drive the vehicle during travel. Therefore, the battery vehicle's battery vehicle depends on the amount of fuel on the vehicle, that is, the same as the conventional diesel trail, how much hydrogen can be stored in hydrogen.
In addition to hydrogen, common fuels also include methanol, hydrogen, hydrocarbons, and carbon monoxide. Oxidants are usually oxygen or air. Common electrolytes include phosphoric acid, potassium hydroxide, molten carbonate, and ion exchange membrane.
Fuel power battery is a power generation device that converts chemical energy in the fuel and oxidant into electrical energy. Unlike traditional internal combustion engines, chemical energy in the fuel is not released by electrochemical reaction by combustion but by electrochemical reaction, with high efficiency and zero emissions. Further, the fuel power battery vehicle has a small battery pack for storing the remaining electric power from the fuel power battery and the energy recovered from the brake of the car, and supplies electricity to the car with the fuel power battery when necessary.
Therefore, the fuel power lithium battery has advantages in long distance compared to the lithium ion battery. The power generation of the fuel power battery is not limited by the Carno loop. In theory, the power generation efficiency can reach 85% to 90%, but due to various polarization limits in the operation, the current energy conversion efficiency of the fuel power cell is about 40% to 60%.
If the electric power is achieved, the total fuel utilization rate can be as high as 80%. With the high-key release of Toyota Fuel Power Battery Mirai in 2014, the global fuel power battery industry entered a new era. Toyota's titanium alloy bipolar plate increases the power density of the fuel power battery stack to 3.
1kW / L, and will reach 4.0kw / L. Higher power density makes the stack smaller, more compact and easier to install.
However, the corrosivity of the metal plate results in higher materials and surface treatment costs. However, as the maturation and output value of the technology, the metal bipolar plate has a large reduction in cost space. Fuel power battery technology is the best alternative to internal combustion engine technology, representing the future development direction of automobiles.
However, if considering some restrictions on the development of fuel power batteries, you will find that fuel power batteries are currently prepared to be commercialized in the future. The most optimistic prediction is that the commercial production of at least 15 years will be used as a fuel power battery vehicle using pure hydrogen as a fuel. Even if you realize a certain degree of business, it will be expensive.
When the fuel power battery is used as a fuel as a fuel, the emissions of carbon dioxide have been reduced by more than 40% compared to the thermal engine process, which is very important to reduce the global greenhouse effect. In addition, since the fuel gas of the fuel power battery must desulfurize before the reaction and generate electricity based on the electrochemical principle, there is no high temperature combustion process, and therefore, there is almost no discharge of nitrogen and sulfur oxides, which reduces air pollution. In the catalyst, platinum is still an important part of the fuel power battery electrochemical reaction catalyst.
At present, the industrial level of PT is approximately 0.5 ~ 0.7g / kW, and Toyota Mirai reactor is still leading, and the consumption of PT is about 0.
3g / kW. With the development of the new platinum alloy catalyst and catalyst carrier (e.g.
, carbon nanowires), the platinum content is further reduced, and the amount of platinum used in the rear diesel processing system is achieved. According to statistics, the US Department of Energy (DOE) is based on the cost of material in 2016. When the output value of the fuel power battery reaches 100,000 units / year, about 40% of the cost of the electrocatalytic reactor, thus reducing the consumption of PT will greatly reduce the reactor power.
At present, the fuel power lithium battery used by commercial vehicles is still important to graphite plate reactor. The advanced manufacturing process guarantees the reliability and durability of the reactor, and it also reduces the procurement cost of the main engine factory. In addition, the modularity of the fuel power lithium battery system reduces the cost of large-scale production.
The above is a detailed analysis of the knowledge of the fuel power lithium battery. You must continue to accumulate related experience in practice, so that you can design better products and better develop for our society.
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