Commonly used cathode materials for lithium-ion batteries include lithium manganate, lithium cobaltate, lithium iron phosphate, and ternary materials, etc. Commonly used cathode materials include carbon materials and silicon-based materials. This issue brings the analysis of the characteristics of these materials and the areas of use.
The main working principle is the repeated movement of lithium ions between the positive and negative electrodes. Regardless of the shape of the battery, its main components are electrolyte, positive electrode sheet, negative electrode sheet, and diaphragm. At present, the international production of lithium-ion batteries is mainly concentrated in China, Japan, and South Korea, and the main lithium-ion application markets are cell phones and computers, and automobiles.
With the continuous development of lithium-ion batteries, the application field is also gradually expanding, and the use of cathode materials has changed from a single to a diversified direction, including olivine lithium iron phosphate, layered lithium cobaltate, spinel lithium manganate, etc., to achieve the coexistence of a variety of materials.
From the technical development, we can see that more new cathode materials will be produced in future development. The cathode material of the power battery, it has strict requirements in cost, safety performance, cycling ability, and energy density.
In the field of application materials, due to the high cost and low safety of lithium cobaltate, it is usually used in general consumer batteries, and it is difficult to meet the requirements of power batteries. The other materials listed above have been fully utilized in the current power batteries.
In lithium-ion battery materials, the cathode material is an important component that can have a large impact on the overall battery performance. At present, cathode materials are mainly divided into two categories, one is the commercial application of carbon materials, such as natural graphite, soft carbon, etc., and the other is in the state of research and development, but the market prospects for good non-carbon cathode materials, such as silicon-based materials, alloy materials, tin and gold materials, etc.
