Why choose lithium battery? what's the difference of lithium battery and lead-acid battery
December 05, 2024ALL OF OUR ELECTRIC PRODUCTS ARE USED THE LITHIUM BATTERIES! WHY WE CHOOSE LITHIUM NOT LEAD-ACID?
Lithium batteries and lead-acid batteries are two different chemical power systems, and they have obvious differences in many aspects. The following is a detailed explanation of the difference between the two:
I. Composition of materials
Lithium batteries: mainly use lithium elements or their compounds (such as lithium ions) as electrode active materials, and carbon materials (such as graphite) as the negative electrode. There are a wide variety of cathode materials, including lithium cobaltate, lithium manganate, lithium iron phosphate, etc. These materials have good electrochemical properties.
Lead-acid battery: It mainly uses lead and its compounds (such as lead acid) as electrode active materials, and the electrolyte is sulfuric acid solution. The structure of the lead-acid battery is relatively simple, consisting of positive electrode plate, negative electrode plate, partition plate, electrolyte and battery slot, etc.
II. Energy density
Lithium batteries: have a higher energy density, which means that lithium batteries of the same weight can store more electricity. This feature makes lithium batteries have a broad application prospect in the fields of portable electronic devices and electric vehicles.
Lead-acid batteries: Although they also have a certain energy density, they are much lower than lithium batteries.
III. Charging speed
Lithium battery: usually has a faster charging speed and can be fully charged in a relatively short time.
Lead-acid battery: the charging speed is relatively slow, and it takes longer to fully charge.
IV. Service life
Lithium batteries: The service life is usually longer than that of lead-acid batteries, and its performance can be maintained in thousands of charging and discharging cycles.
Lead-acid battery: usually needs to be replaced after hundreds of charging and discharging cycles.
V. Environmental protection
Lithium battery: It is a relatively environmentally friendly energy storage method. Although lithium batteries may produce some harmful substances during production, their recycling and processing processes produce relatively few harmful substances. In addition, the high energy density and long service life of lithium batteries also help to reduce the number of waste batteries and environmental pollution.
Lead-acid batteries: There is a relatively serious environmental pollution problem. Lead-acid batteries contain toxic substances such as lead and sulfuric acid, which may cause harm to the environment and human health during production, use and disposal.
VI. Cost
Lithium batteries: The cost is usually higher than that of lead-acid batteries, which is mainly due to the high cost of raw materials and the complex production process of lithium batteries. However, considering the advantages of high energy density and long service life of lithium batteries, they may be more cost-effective in long-term applications.
Lead-acid battery: It has a competitive advantage in some low-cost applications because of its relatively low production cost.
VII. Weight and portability
Lithium batteries: Due to their high energy density, they are usually lighter, which makes them more attractive in transportation and other applications that require lightweight power.
Lead-acid battery: relatively heavy, not suitable for applications that require light power supply.
In summary, there are obvious differences between lithium batteries and lead-acid batteries in terms of material composition, energy density, charging speed, service life, environmental protection, cost, weight and portability. When choosing the battery type, decisions should be made according to the specific application scenario and budget.