What are the key differences between lead-carbon batteries and lithium batteries

1. Different constituent materials: Lithium batteries use carbon material (graphite) as the negative electrode and lithium-containing compounds as the positive electrode; nickel-cadmium battery positive electrode is composed of active materials such as nickel oxide powder and graphite powder, and the negative electrode is composed of cadmium oxide powder and iron oxide powder Composition of active substances. 2. The operating principle is different: a lithium battery is more equivalent to a charge container, and does not rely on electrochemical reaction at all during operation. When the battery is charged, lithium ions are generated on the positive electrode of the battery, and the generated lithium ions move to the negative electrode through the electrolyte. . Lithium batteries do not contain toxic elements at all and have little impact on the environment, so they are used in many digital electronic devices. The battery has a small internal resistance and can adapt to high-current discharge, so it can be divided into low-rate, medium-rate, and high-rate batteries. It is more suitable for occasions with higher power output requirements. When the battery is at a high temperature, it is more difficult to charge. When a nickel-hydrogen battery is at a higher temperature, the secondary reaction oxygen separation reaction will accelerate. If there is a good negative electrode performance, the oxygen separated on the positive electrode can be recovered on the negative electrode. , So that the internal pressure of the battery can be eliminated. When 100% fast full charge and discharge are performed at 1C rate, the battery life can reach more than 500 times. In fact, several developed countries engaged in the development and industrialization of electric vehicles, especially Japan and the United States, use nickel-hydrogen batteries for their power lithium-ion batteries. It refers to a type of equipment that converts the chemical energy of the positive and negative active materials into electrical energy through electrochemical reactions. After a long period of research and development, chemical batteries have ushered in a wide variety of applications and a wide range of applications. A huge piece of equipment that can only be accommodated in a building, and it is as small as a millimeter. Serve our glorious life all the time. At present, many electrochemical scientists in the world concentrate their interest in the field of chemical batteries as the power of electric vehicles. The earliest batteries consisted of a glass container filled with electrolyte and two electrodes. There are still liquid batteries today. Such as those large fixed lead-acid batteries used as uninterruptible power supplies or lead-acid batteries used in conjunction with solar cells. The advantage is the long cycle life. They can be fully charged and discharged 200 times over and over again. Some rechargeable batteries have a higher load capacity than most disposable batteries. The technology of fuel power cell includes the presentation of alkaline fuel power cell (AFC), phosphoric acid fuel power cell (PAFC), proton exchange membrane fuel power cell (PEMFC), molten carbonate fuel power cell (MCFC), solid oxide fuel Power batteries (SOFC) and straight methanol fuel power cells (DMFC), among which, fuel power cell technology that uses methanol oxidation reaction as the positive reaction is favored and actively developed by the industry. Battery symbol: (-)Zn│NH4ClZnCl2│MnO2(+) Total battery response: Zn+2NH4Cl+2MnO2u003dZn(NH3)2Cl2+2MnO(OH) (2) Zinc-type zinc-manganese battery: also known as high-power zinc- The manganese battery, whose electrolyte is zinc chloride, has the advantages of good leakage resistance, high-power discharge and higher energy density. It is the second-generation product of zinc-manganese battery. It was first introduced by Germany in the early 1970s. When used for flashlight lighting, the typical termination voltage is 0.9V, and some radios allow the voltage to drop to 0.75V. 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: Analyze the differences between lithium batteries for electric vehicles and lead-acid batteries