Which is better between lead-acid batteries and lithium batteries?
Lead acid batteries and
lithium batteries, as two important power reserve energy sources, have different characteristics in battery materials, energy density, battery performance, cycle life, and safety characteristics.
1. The electrodes of lead-acid batteries are mainly made of lead and its oxides. The electrolyte is a type of battery in sulfuric acid solution. Iron lithium batteries mainly use lithium iron phosphate as the positive electrode material, which is suitable for power applications;
2. The energy density of lead-acid batteries is generally 40Wh/kg, while the energy density of lithium batteries is high, reaching 240Wh/kg. The weight of lithium iron phosphate batteries is more than 65% lighter than lead-acid batteries of the same capacity;
3. Phosphate batteries have a wider environmental temperature adaptability and stable discharge performance compared to lead-acid batteries, which can meet the needs of high current discharge.
4. The cycle life of lead-acid batteries is about 800 times, and the cycle life of lithium iron phosphate is about 2500 times.
5. Lead acid batteries contain a large amount of lead, which, if not properly disposed of after disposal, will pollute the environment. However, lithium iron phosphate batteries do not contain harmful substances and will not cause environmental pollution during production and use.
6.
Lithium iron phosphate, as a positive electrode material for lithium batteries, is currently the safest lithium-ion positive electrode material. Although it has low compaction density and low voltage platform, due to its safety and stability, it is still safe under abuse conditions such as compression, overcharging, and short circuit. Due to its safety and stability.
Through comparative analysis, lithium iron phosphate batteries have more advantages compared to lead-acid batteries and have become an important development direction for lithium-ion power batteries.
