Common application fields of lithium batteries
The ion battery can be recharged in the process of use, and it belongs to a kind of secondary rechargeable battery. 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 It is electrolyte, positive electrode sheet, negative electrode sheet and separator. At present, the production places of lithium-ion batteries in the world are mainly concentrated in China, Japan and South Korea, and the main lithium-ion application markets are mobile phones, computers and automobiles.
With the continuous development of lithium-ion batteries, the application fields are gradually expanding, and the use of cathode materials has changed from a single to a diversified direction, including: olivine-type lithium ferrous phosphate, layered cobalt acid Lithium, spinel-type lithium manganate, etc., realize the coexistence of various materials.
It can be seen from the technical development that more new cathode materials will be produced in the future development. For the positive electrode material of power battery, it has relatively strict requirements in terms of cost, safety performance, cycle capacity and energy density.
In the field of applied materials, due to the high cost and low safety of lithium cobalt oxide, it is usually suitable for ordinary consumer batteries in specific use, and it is difficult to meet the relevant requirements of power batteries. The other materials listed above have been fully utilized in current power batteries.
In lithium-ion battery materials, the negative electrode material is an important part, which can have a great impact on the performance of the overall battery. At present, anode materials are mainly divided into two categories, one is carbon materials for commercial applications, such as natural graphite, soft carbon, etc., and the other is non-carbon anode materials that are in the research and development state, but have a promising market prospect. For example, silicon-based materials, alloy materials, tin-gold materials, and the like.
