Solar panels are generally used with energy storage, and people often have a concern when considering the purchase of energy storage, which kind of energy storage is better (longer service life)? However, this is often determined by the battery inside, generally by the three lithium batteries and lithium iron phosphate batteries, so which is better, what is the difference?
Lithium iron phosphate battery (LiFePO4) refers to lithium ion battery which uses lithium iron phosphate as cathode material. The cathode materials of lithium ion batteries mainly include lithium cobalt acid, lithium manganese acid, lithium nickel acid, ternary materials, lithium iron phosphate and dc solar wire. Lithium cobalt acid is the cathode material used in most lithium ion batteries.
Ternary polymer lithium-ion batteries, is correct material using nickel cobalt manganese acid lithium (Li (NiCoMn) O2) or aluminum nickel and cobalt acid lithium ternary positive electrode material of lithium battery, the ternary composite cathode material is nickel salt, manganese and cobalt salt salt as raw materials, in the proportion of nickel cobalt manganese can according to the actual need to adjust, the ternary material to do the positive battery compared with cobalt acid lithium battery safety is high, However, the voltage is too low, so when using the mobile phone (the cutoff voltage of the mobile phone is generally around 3.0V), there will be an obvious feeling of insufficient capacity.
The energy density of ternary lithium batteries will be higher than that of lithium iron phosphate batteries. For the same power, the volume of a ternary lithium battery will be about twice as small as that of a lithium iron phosphate battery. Three yuan lithium batteries are also mostly used in the 18650 battery, which is also used in Tesla, and lithium iron phosphate batteries are commonly used in buses. Tesla can run further on a ternary battery because of its light weight and high endurance. Another reason why the bus does not use ternary lithium battery is for safety. Lithium iron phosphate battery will not burn when encountering a short circuit. In practical use, lithium iron phosphate battery has the advantages of high temperature resistance, strong safety and stability, low price and better cycling performance.
Energy storage of these two kinds of batteries can be, but it depends on which point you focus on, but if you want to use at home, for safety, because indoor charging is more dangerous, easy to short circuit fire, it is recommended to choose a lithium iron phosphate battery. For outdoor use only, there is no problem in choosing ternary batteries.