The important difference between lead-carbon battery and lithium battery

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 working principle is different: a lithium battery is more equivalent to a charge container, and it basically does not rely on electrochemical reactions when working. 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 basically contain no toxic elements and have little impact on the environment, so they are widely used in 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 the nickel-hydrogen battery is at a higher temperature, the side reaction oxygen evolution reaction will accelerate. If there is a good negative electrode performance, the oxygen precipitated on the positive electrode can be reduced on the negative electrode. 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 device that converts the chemical energy of the positive and negative active materials into electrical energy through an electrochemical reaction. After long-term research and development, chemical batteries have ushered in a wide range of varieties and widespread use. A huge installation that can only fit in a building, and a variety as small as a millimeter. Serve our wonderful life all the time. At present, many electrochemical scientists in the world are interested in chemical batteries as the power of electric vehicles. The earliest batteries consisted of a glass container filled with electrolyte and two electrodes. The difference between lead-carbon batteries and lithium batteries is still liquid batteries. 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 a long cycle life. They can be fully charged and discharged more than 200 times. Some rechargeable batteries have a higher load capacity than most disposable batteries. Fuel power cell technologies include the emergence of alkaline fuel power cells (AFC), phosphoric acid fuel power cells (PAFC), proton exchange membrane fuel power cells (PEMFC), molten carbonate fuel power cells (MCFC), solid oxide fuels Power cells (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 reaction: Zn+2NH4Cl+2MnO2u003dZn(NH3)2Cl2+2MnO(OH) (2) Zinc-type zinc-manganese battery: also known as high-power zinc- The manganese battery, with zinc chloride as the electrolyte, has the advantages of good leakage resistance, high-power discharge and higher energy density. It is the second generation of zinc-manganese batteries. 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.