Lithium-ion battery cell raw materials

　　Cathode material

　　Cathode materials have the largest market capacity and higher added value in lithium ion batteries, accounting for about 30% of the cost of lithium ion batteries, with a low gross profit margin of 15% and a high of more than 70%.

　　The cathode materials currently used in batches for lithium ion batteries mainly include lithium cobaltate, lithium manganate, lithium nickelate, lithium cobalt nickel manganate, and lithium iron phosphate.

　　Nickel acid lithium ion batteries have the worst safety (overcharging is easy to catch fire), the lowest high temperature tolerance (high temperature decomposition), and the highest synthesis difficulty.

　　Lithium cobalt oxide was the first to realize commercial application, and its technology has been mature so far, and it has been widely used in small and low-power portable electronic products, such as mobile phones, notebook computers and digital electronic products.

　　As a cathode material for lithium ion batteries, lithium iron phosphate has good electrochemical performance, a stable charge and discharge platform, and a stable structure during charge and discharge. At the same time, the material has the advantages of non-toxic, non-polluting, good safety performance, can be used in a high temperature environment, and a wide range of sources of raw materials. It is currently a hot spot in the battery industry.

　　Anode material

　　Anode materials account for a relatively low proportion of the cost of lithium batteries, mainly carbon anode materials and non-carbon anode materials.

　　Carbon anode material: It is widely used by commercial lithium-ion batteries.

　　Advantages: safety, long cycle life, low price, non-toxic.

　　Disadvantages: The mass is lower than the energy.

　　Non-carbon anode materials: Divided into lithium transition metal nitrides, transition metal oxides and nano-alloy materials according to their composition.

　　Advantages: has a high volume energy density.

　　Disadvantages: poor cycle stability, large irreversible capacity, high preparation cost, and not yet industrialized.

　　In the future, the goal of anode materials is to increase capacity and cycle stability. Carbon materials are combined with various high-capacity non-carbon anode materials to develop high-capacity, non-carbon composite anode materials.