Is it better to choose a fuel cell or a lithium battery for the power battery of an electric vehicle?

The current mainstream technology route to replace petroleum vehicles is lithium batteries and fuel cells. The biggest advantage of fuel cells is their high energy density, which is 120 times that of lithium batteries; however, lithium batteries have a higher degree of commercialization in the early days, and the cost of the entire vehicle is lower. The charging can use the existing grid system, compared to the entire fuel cell system. The hydrogen and hydrogen supply network must be built from scratch, and the cost will be lower. So is it better to choose a fuel cell or a lithium battery for the power battery of an electric vehicle? Is it better to choose a fuel cell or a lithium battery for the power battery of an electric vehicle? A fuel cell is a chemical device that directly converts the chemical energy of the fuel into electrical energy, also known as an electrochemical generator. It is the fourth power generation technology after hydropower, thermal power and atomic power. Lithium battery is a kind of secondary battery, which mainly relies on the movement of lithium ions between the positive electrode and the negative electrode. Li+ intercalates and deintercalates back and forth between the two electrodes during charging and discharging: Li+ deintercalates from the positive electrode during charging and intercalates into the negative electrode through the electrolyte. The negative electrode is in a lithium-rich state; the opposite is true during discharge. The biggest difference between a hydrogen fuel cell and a lithium battery is that it does not need to be recharged, only needs to be refilled, and it is very convenient to use it similarly to ordinary fuel vehicles. Although the price is close to the people, fuel cell vehicles started later than lithium battery electric vehicles, and their industrial chain is longer than that of lithium battery electric vehicles. The industrial chain of lithium battery electric vehicles has basically been opened up, and there is no complete industrial chain for fuel cells in China. form. Comparison of fuel cell and lithium battery 1. From the perspective of consumers, fuel cell vehicles have long cruising range, fast hydrogenation, and have better driving experience than electric vehicles, which undoubtedly can bring a better user experience. Therefore, fuel cells Although the development of automobiles has been slow, they have not lost market enthusiasm. The establishment of fuel cell vehicle hydrogen refueling stations, the localization of key parts and components, and technological advancement to reduce production costs are far more innovative than the bottleneck of increasing energy density and mileage of lithium batteries. 2. Regardless of whether the fuel cell or the lithium battery related technology, there is still room for a lot of progress. If the cost of the fuel cell can be reduced, it can truly be used as an alternative energy source for gasoline/diesel fuel. For lithium batteries, if their energy density can be further improved, and the cycle life can be longer, it is also a very good driving energy source. 3. The main obstacles to the development of fuel cells are high cost and complicated hydrogen production process. The entire hydrogen refueling and hydrogen supply network needs to be built from scratch. Hydrogen is obtained by electrolysis or steam reformation. However, the cost of these two methods is quite high, and the cost required to produce the same quality of natural gas is 1/2 or even 1/3 of that of hydrogen production. The production cost of lithium batteries is relatively low. In addition, it is very convenient to recharge and use. Compared with other portable energy sources, it is more cost-effective. 4. Fuel cells and lithium batteries have little impact on the environment. The former combustion product is water that does not produce greenhouse gases generated after gasoline/diesel combustion; the discharge products of lithium batteries may be lithium oxide, lithium hydroxide, etc., and will not affect the environment. In addition, lithium batteries can be reused. Based on the above points, these two types of batteries have become the most popular power sources for electric vehicles. As far as the current application of new energy materials in the field of battery research and development is concerned, lithium batteries and fuel cells have their own advantages, and they have unique characteristics in the actual use of new energy vehicles. Looking at the current development trend of electric vehicles , Lithium batteries are used more frequently and widely, and are more likely to be favored by manufacturers and users. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the precautions for the use of polymer lithium-ion batteries?