What is the essential difference between ternary lithium battery and lithium iron phosphate battery?There are many material systems for lithium batteries. The current mainstream material systems are ternary materials and lithium iron phosphate. In 2020, the proportion of lithium battery cathode material shipments will be ranked first (46%) and second (25%).

　　Although both are lithium batteries, there are big differences in performance. Let's take a look at the essential difference between ternary lithium batteries and lithium iron phosphate batteries.

　　The core advantage of ternary materials lies in their high energy density, but their shortcomings are also very obvious: they have poor safety when subjected to shocks and in high-temperature environments.

　　In recent safety tests such as acupuncture and overcharging, which have been relatively hot, large-capacity power ternary batteries are difficult to pass. It is the defect in safety performance that has always restricted the large-scale assembly and integrated application of the ternary material technology route.

　　Lithium iron phosphate materials are just the opposite of ternary materials. The crystal structure is a unique olivine type, and the spatial framework structure is not easily deformed, so the energy density is average, but the cycle life and safety are very good.

　　Ternary materials will begin to decompose and release oxygen at a temperature of about 150°C to 250°C, causing the electrolyte to burn. In contrast, the decomposition temperature of lithium iron phosphate is around 600°C, which has obvious safety advantages.

　　Based on the above advantages, many safety tests that ternary batteries cannot pass, lithium iron phosphate can pass.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect replacement for lead-acid batteries, and they are the first choice for grid-connected peak shaving, off-grid energy storage, photovoltaic energy storage, UPS, data center and other industries.

　　On the other hand, the service life of lithium iron phosphate batteries has a huge advantage. Its cycle times have reached 4000 times, far exceeding other technical routes. This fully meets the two key demands of large-scale energy storage, electric vehicles, and industrial users - safe and durable!