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The positive electrode material is a key functional material of lithium batteries and a decisive factor in their electrochemical performance. It plays a dominant role in the energy density and safety performance of the battery, and affects the comprehensive performance of lithium batteries. Therefore, the naming of lithium batteries is mainly determined by the properties of the positive electrode material.
At the same time, positive electrode materials are also the most expensive part of lithium batteries, and the key to reducing the cost of lithium batteries is to reduce the cost of positive electrode materials.At present, the main positive electrode materials for lithium batteries in China include lithium cobalt oxide, lithium manganese oxide, ternary and lithium iron phosphate.
Lithium cobalt oxide, as the first generation commercial positive electrode material for lithium batteries, has the advantages of high vibration density, stable charging and discharging, and high working voltage. With a relatively simple process flow, it was the first to achieve commercial production. However, the cycling performance and safety performance of lithium cobalt oxide are poor. At the same time, the global reserves of its core raw material cobalt are very limited and concentrated in Africa. The local political turmoil greatly affects the stable supply of cobalt, leading to high and fluctuating cobalt prices, which is not conducive to cost control by positive electrode manufacturers.After lithium cobalt oxide, the earliest research was on lithium manganese oxide cathode materials. Due to the abundance of manganese, lithium manganese oxide has a significant cost advantage in raw materials. At the same time, it has advantages such as good rate performance and good safety performance. But its lower energy density, poor cycling performance, especially poor high-temperature cycling performance, limit its downstream applications.
Three yuanPositive electrode materials exhibit different properties due to the different ratios of the three elements, meeting diverse application requirements. The ternary cathode material has the advantages of good electrochemical performance, good cycling performance, and high energy density. However, ternary positive electrode materials have low output efficiency, fast capacity decay, short lifespan, and poor safety. When subjected to impact and fire, the ignition point is relatively low.
Lithium iron phosphateThe emergence of lithium battery positive electrode materials is a major breakthrough, which is environmentally friendly, safe, and has good high-temperature performance, making it widely used in the market. Based on comprehensive safety and service life, lithium iron phosphate is the optimal choice for industrial backup power supply scenarios.
Haibo Electric HB-LiFePO4 industrial lithium iron phosphate battery pack is a professional and series product launched to meet the special needs and application characteristics of industrial enterprises. Mainly used in industrial power backup batteries, industrial special batteries, industrial energy storage and other fields, it can meet the application scenarios of high voltage levels and large capacity.
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Comparison between lithium iron phosphate batteries and lead-acid batteries
Haibo Customized Lithium Iron Phosphate Battery
