Lithium-ion battery and sodium-sulfur battery are different

Under normal circumstances, a sodium-sulfur battery is composed of a positive electrode, a negative electrode, an electrolyte, a barrier, and a casing. It is different from ordinary secondary batteries (lead-acid batteries, nickel-cadmium batteries, etc.). Sodium-sulfur batteries are composed of molten electrodes and solid electrolytes. The active material is molten sodium metal, and the positive electrode active material is liquid sulfur and sodium polysulfide molten salt. As a new type of chemical power source, sodium-sulfur battery (NaS) has grown greatly since its inception. Sodium-sulfur batteries are small in size, large in capacity, long in life, and high in efficiency. They are widely used in power storage, such as peak shaving, emergency power supply, and wind power storage. Sodium-sulfur battery uses sodium and sulfur to store electrical energy through chemical reverberations. When the grid needs more electrical energy, it converts chemical energy into electrical energy and releases it. Sodium-sulfur batteries have excellent flood storage performance. The input current is suddenly 5-10 times higher than the rated power, and it can also suffer calmly, and then release it into the power grid with a constant power. This is especially useful for the smooth operation of large-scale urban power grids. From the comprehensive consideration of power supply capabilities, energy efficiency, installation costs, rated power discharge capabilities, installation site requirements, maintenance requirements and other factors, the overall characteristics of sodium-sulfur batteries are most suitable for most limited energy storage system applications. Sodium-sulfur batteries have unique advantages for energy storage, which are mainly due to the low raw materials and preparation costs, high energy and power density, high efficiency, freedom from garden restrictions, and convenient maintenance. Sodium-sulfur batteries have several advantages: one is higher than energy. Its theoretical specific energy is 760Wh/Kg, which is actually greater than 150Wh/Kg, which is 3-4 times that of lead-acid batteries. The other is high current and high power discharge, which can release 3 times the inherent energy instantaneously; the other is high charging and discharging efficiency. The disadvantage of sodium-sulfur battery is that its working temperature is between 300-350℃, so the battery needs to be heated and kept warm during operation. The current process is to recover high-performance vacuum insulation technology. Because sodium-sulfur batteries have a series of attractive features of high-energy batteries, many countries wanted to grow them into power lithium batteries for electric vehicles at the beginning, and some achievements have been made. However, sodium-sulfur batteries are relatively harsh in mobile places. , Stagnated by the scope of space and security. Lithium ion batteries: Lithium ion batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable. The fifth-generation product of rechargeable batteries, lithium metal batteries, was born in 1996, and its safety, specific capacity, self-discharge rate, and performance-to-value ratio are superior to those of lithium-ion batteries. Due to its own high-skills requirements, only a few companies in a few countries are producing such lithium metal batteries at the moment. Uses of Lithium-ion batteries Lithium-ion batteries are widely used and close to life. Capacity type lithium-ion battery uses: solar street lights, UPS backup power supply, mobile power supply, notebook cell phone batteries, lighting systems, energy storage systems, medical equipment, financial equipment. Smart home, etc. Power lithium-ion battery uses: electric vehicles, mopeds, electric things, electronic cigarettes, model airplanes, etc. Features of Li-ion battery 1. High energy and long service life. 2. High rated voltage can suffer high power. 3. Low self-discharge rate, light weight, adapt to rough temperature conditions. 4. Green and environmental protection, regardless of production, use or scrap, it does not contain or present any toxic and harmful heavy metal elements and substances such as lead, mercury, cadmium, etc. 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 post: Different explanations of power lithium ion battery pack and capacity lithium ion battery