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(3) Alloy negative electrode material

NexelionTMSn Co C alloy negative electrode material: can increase the energy density per unit volume by 30%.

3M Si Fe M alloy: It is much cheaper than Sn Co C in terms of raw material cost and has a higher compacted density. The use of LPPA binder can achieve a reversible capacity of over 700 and can be cycled up to 300 times in a full battery, but the initial efficiency of this material is less than 85%.

(4) Transition metal oxides

Has a high specific capacity. Earlier ones include tin oxide (Sn0), Sn02, tungsten dioxide (WO2), molybdenum dioxide (MoO2), etc. SnO material is a tin based oxide lithium storage material with advantages such as high capacity density, wide source, and low price. In recent years, multiple oxides such as manganese metavanadate (MnV206), zinc manganate (ZnMn204), zinc manganate (ZnCo204), and zinc stannate (Zn2Sn04) have also attracted widespread attention. These types of materials have different lithium intercalation mechanisms, but they all have high theoretical specific capacities. During the first cycle of discharge of transition metal oxide lithium storage negative electrode materials, a layer of SEI film will be formed on the surface of the oxide, which can effectively prevent the passage of solvent molecules. However, Li+can freely embed and detach through this passivation layer. SEI film will have a protective effect on negative electrode materials, making the material structure less prone to collapse and increasing the cycling life of electrode materials. So this layer of SEI film plays a role in improving the cycling performance of the material.

3. Battery separator

Generally speaking, the quality of imported battery separators is relatively better than that of domestically produced battery separators. The quality of battery separators has a significant impact on the electrical performance and service quality of lithium-ion batteries. The difference in pricing for lithium-ion batteries may be related to the quality of the battery separator used, which also depends on the performance requirements of the products developed and used by oneself for lithium-ion batteries.

4. The relationship between the quotation of lithium-ion batteries and electrolytes

Lithium ion battery electrolytes and battery separators are both imported and domestically produced, and prices may vary due to this.

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