Are hydrogen fuel-powered batteries a real black technology?

Is hydrogen fuel power battery a real black technology? Recently, BYD (01211) revealed to investors that it is developing hydrogen fuel power battery. In fact, in May of this year, BYD reached an agreement with a US company Hybrid Electric Power Company to cooperate on hydrogen fuel-powered battery buses. Not only BYD, it is known that domestic companies Weichai Power (02338) and Great Wall Motors (02333) have successively deployed hydrogen fuel power cells. Toyota of Japan began research on hydrogen fuel cell vehicles as early as 1992. So, what kind of black technology is this kind of hydrogen fuel battery that keeps automakers busy? What makes hydrogen fuel battery cars on the road for testing? Hydrogen fuel battery: the ultimate cure for new energy? Lead-acid batteries are an important part of power lithium-ion batteries on the market, and lithium batteries are a small part of fuel power batteries. Regardless of whether fuel power cells are the ultimate solution for new energy sources, here are some data. Both lead-acid batteries and lithium batteries are energy storage batteries (secondary batteries), that is, they have to be charged and then discharged, and their essence is a reversible reaction of redox of metal elements. Take the lead-acid battery as an example (as shown in the figure below). From left to right is the discharge process, from right to left is the charging process. According to the conservation of electrons, the response is 2 electrons. The working principle of lithium battery is similar to this, but there is only one electron transfer response. It can be seen from the periodic table that the molecular weight of lead is 207.2 and the molecular weight of lithium is 6.9, which means that for every electron transported, the difference between lead and lithium is 103.6 and 6.9. Let us look at a hydrogen fuel power cell, where hydrogen and oxygen (air) are separated at the anode and cathode, and react and discharge under the use of a catalyst. The reaction formula tells us that each hydrogen atom can carry one electron, and the hydrogen required to carry one electron is 1. In contrast, hydrogen fuel-powered batteries require less mass to carry electrons than lead-acid batteries or lithium batteries, in short, higher energy density. The energy density of hydrogen energy has obvious advantages. In fact, it is much more than that. Because in the actual response, the energy conversion of the battery will be lost, and the charge and discharge process of the secondary battery is more serious than the direct discharge loss of the fuel power battery. Because it is not restricted by the Carnot cycle, the theoretical energy conversion power of the fuel power cell can reach more than 90%, and the actual power can reach 60%. In the process of practical application, hydrogen fuel power batteries also have the unparalleled advantages of energy storage batteries. Lie on the charging pile to show energy. In theory, hydrogen fuel-powered batteries may be the ultimate solution for new cars. They combine the high-energy ratio, charging and operation capabilities of gasoline-powered vehicles, and the pollution-free advantages of high conversion power beyond energy storage batteries. Why are hydrogen fuel-powered battery vehicles not on the road? This talks about several roadblocks on the road of hydrogen fuel-powered battery vehicles. What about hydrogen fuel-powered battery cars? First, if a car wants to be on the road, it must be more than a car’s own job. It involves hydrogen processing, storage and transportation, hydrogen car charging at hydrogen refueling stations. The assembly requirements of the same fuel power battery system include components such as plates, electrolytes, exchange membranes, catalysts, and loose layers. The question is, how to produce hydrogen? The current mainstream hydrogen production methods include coal production, hydrogen production from chlor-alkali by-products, and hydrogen production by electrolysis. This drawback is still very obvious. Correlation analysis shows that hydrogen production from coal, let alone coalification, can be used in several more processes, assuming that hydrogen contains impure carbon dioxide or carbon monoxide, which can easily poison battery catalysts. The processing of by-product hydrogen from chlor-alkali depends on the processing layout of industrial products and is not suitable for large-scale promotion. Hydrogen production by water electrolysis has a long way to go to other energy sources, electrical energy, chemical energy, and electrical energy. In addition, hydrogen is a gas with a very small volume density, which makes storage and transportation very difficult. One is the low energy storage rate, and the other is the poor safety. In addition, the layout of hydrogen stations is now less, which is very uncomfortable. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: What factors are involved in the safety of lithium batteries?