2021-08-02
What is the difference between a lithium battery and a storage battery?
Lithium battery: Lithium battery is a type of battery that uses lithium metal or lithium alloy as negative electrode material and uses non-aqueous electrolyte solution. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries.
Storage battery: The storage battery is also called the secondary battery. It is a device that directly converts chemical energy into electrical energy. It is a rechargeable battery designed to be recharged through a reversible chemical reaction. It usually refers to a lead-acid battery. After discharging, the internal active material can be regenerated by charging.
Analysis of the difference between lithium battery and storage battery:
1. Weight energy density
The current energy density of lithium batteries is generally 200-260wh/g, and the battery is generally 50-70wh/g, so the weight energy density of lithium batteries is 3-5 times that of batteries, which means that under the same capacity, the battery is lithium 3-5 times the battery, so in the lightweight of energy storage devices, lithium batteries occupy an absolute advantage.
2. Volume energy density
The volume capacity density of lithium batteries is usually about 1.5 times that of batteries, so under the same capacity, the volume of lithium batteries is about 30% smaller than that of batteries.
3. Service life
At present, the more popular material systems are ternary and iron-lithium. The cycle times of ternary power lithium batteries are usually more than 1,000 times, the cycle times of lithium iron phosphate batteries are more than 2,000 times, and the cycle times of batter