![]() ![]() Low cost, easy to be processed into electrodes and stable electrode structure are favorable conditions for the popularization and application of cathode materials for lithium-ion batteries. Sixth, the material is easy to obtain, and the processing property is good. While the channel is shallow, the lithium insertion position should be sufficient.įifth, good compatibility and thermal stability with electrolyte, this is for safety considerations. The large surface area and the relatively short embedding channel of lithium ion make it easier to embed and deembed. Electrode slurry materials and their role. It is a factor that affects the internal resistance of the cell and also the power characteristics.įourthly, the specific surface area of the material is large and there are a large number of lithium embedded sites. The electrode sheet of the lithium-ion battery is made by applying electrode slurry to the metal foil. Third, the diffusion coefficient of lithium ions is large, lithium ions move more rapidly inside the material, and the ability of embedding and deembedding is strong. When the battery is being charged, the lithium ions pass from the positive cathode electrode, through the polymer membrane, to the negative anode electrode. Such materials are not commercially viable. Some cathode materials, which have a very high theoretical capacity, have up to half of the lithium ions, which are deactivated after the first insertion. Secondly, the material contains high lithium content and the lithium ion battery is reversible. At present, the most important cathode materials successfully developed and applied are lithium cobaltate, lithium iron phosphate, lithium manganate, lithium nickel-cobalt-manganate (NCM) and lithium nickel-cobalt-aluminate (NCA).īasic requirements for cathode materials of lithium ion battery:įirst, the material itself has a high potential, so that a large potential difference can be formed between the material and the negative electrode, resulting in a high energy density cell design At the same time, the impact of charged ions embedding and exiting on electrode potential is small, so there will not be too large voltage fluctuations in the charging and discharging process, and will not bring adverse effects to other electrical systems. ![]() The performance of cathode material of Li-ion battery directly affects the performance of Li-ion battery, and its cost also directly determines the cost of battery. Lithium-ion batteries are used in different technologies such as the Hybrid Electric Vehicles (HEV), which use both battery as well as electric motor engines to. What are the requirements of cathode material for lithium ion battery? 4 battery) or LFP battery ( lithium ferrophosphate) is a type of lithium-ion battery using lithium iron phosphate ( LiFePO 4) as the cathode material, and a graphitic carbon electrode with a metallic backing as the anode. ![]()
0 Comments
Leave a Reply. |