The most comprehensive analysis of the echelon utilization and recycling of lithium batteries

　　Mechanical sorting method: mechanical tool cracking sugar screening, direct sorting. High temperature solution: burning at high temperature to form a heat shrinkable dry method. Dry repair: secondary processing of the recovered crude product into a material wet method (chemical method): lithium battery echelon The most comprehensive analysis of utilization and resource recovery: separation, dissolution and extraction with chemical reagents

　　Chemical extraction: separation with reagents

　　Ion exchange: exchange with ions

　　The problem of biological recovery technology: It is mainly leaching with suction, which is relatively difficult at present and technically difficult. method. As mentioned before, the cost of wet method is relatively high, but the recycled materials are probably relatively high, and each has its advantages and disadvantages.

　　1. The United States: extended producer responsibility + consumer deposit system, the most comprehensive analysis of the echelon utilization and recycling of lithium batteries

　　Take Tesla Motors as an example. In 2015, it released POWERWALL for the ladder market and used it as a secondary use of lithium batteries.

　　2. Germany: The producer assumes the main responsibility. The analysis of battery echelon utilization and recycling is the most comprehensive

　　Take Bosch as an example. In 2015, it started to recycle batteries in cascades, and by 2018, the recycling rate was over 50%.

　　3. Japan: alarm clock + battery production enterprise field

　　The most comprehensive analysis of the echelon utilization and recycling of lithium batteries

　　Japan has issued a national alert to the range of battery production companies' recycling. To Toyota, Toyota Motor is the production base for hybrid vehicles. It started to recycle used batteries in 1998. There are three main steps for its recycling: first establish a recycling network, and then use the used batteries of Toyota Camry Hybrid Evaluation Vehicles in Yellowstone Park in 2015. The facility is powered by batteries, and the battery battery management system has been redesigned to extend the battery life to 85KWh and extend the battery life.

　　4. Lead-acid battery recycling

　　Abstract: In the production process of lithium-ion batteries, the following factors must be paid attention to. After the lithium-ion battery is released, it is chemically formed. The formation conditions are more critical, focusing on the packaging of SEI film. Generally speaking, each manufacturer has its own formation conditions;

　　In the production process of polymer lithium ion batteries, the following factors must be paid attention to. After the polymer lithium-ion battery is produced and packaged, it is the cause. Comparing the conditions of formation, it involves the formation of SEI film to prevent the spontaneous reaction between the renewal and the initial solution; at the same time, it can also make the active material and the gas have a good contact. Generally speaking, each manufacturer has its own chemical conditions.

　　Polymer Lithium Ion Battery/Raw Materials

　　1 For the unification of the unity, in addition to the use of organic binders, water-absorbing polymers can also be used as binders. Schematic diagram of the structure of AMAC dimethyl ammonium chloride. It has certain chemical properties with polyvinylidene fluoride, and the conductivity is improved by dispersing on the surface. The SE 2 conductive agent in organic solution has better dispersibility. For example, for LiMn2O4, the use of new technology and traditional technology can better ensure the popularization of conductive agents, with low microbial performance, high capacity and better rate. The relationship between the capacity and discharge rate of LiMn2O4 positive electrode prepared by different processes.

　　3. For natural graphite//LiFePO4, the capacity of natural graphite should be equivalent to the sum of the capacity of natural graphite and the life required for SEI film formation. According to different materials, the thickness of the coating also has different requirements.

　　4 The polymer of the existing product still uses the carbon compound solution plasticizer of LiFP6 as an ion battery. It will occur under the temperature (80~100℃), under the generation of a trace amount or alcohol, and produce some metal fluoride which will be heated. Decomposes on the composite oxide of silicic acid or lithium.

　　5 During the formation and circulation of polymer lithium-ion batteries, swelling will also occur. If magnesium lithium is used as the positive electrode, the swelling phenomenon is 4V, which is the main reason that the electrolyte is reduced below. Of course, when it is charged at any time, high prices will also generate gas. The flatulence of magnesium lithium oxide should obviously appear manganese lithium Ni0.80.1Co0.1O2. Afterwards, bloating will begin to occur above 32V. , A specific user said that it is necessary to avoid the occurrence of flatulence. This is an indicator mainly when selecting materials.