(1) Lead acid battery: It is a type of battery where the electrode is
primarily made of lead and its oxides, and the electrolyte is a sulfuric acid
solution. Nowadays, it is widely used internationally, with a cycle life of up
to 1000 cycles and a power output of 80% -90%. It has a high cost performance
ratio and is commonly used as an emergency power source or backup power source
in power systems.
Shortcomings: Assuming deep and agile high-power discharge, the available
capacity will decrease. Its characteristics are low energy density and short
lifespan. This year, lead-acid batteries have significantly improved their cycle
life by adding super active carbon materials to the negative electrode plate of
lead-acid batteries.
(2) Lithium ion battery: It is a type of battery that uses lithium metal or
lithium alloy as the negative electrode material and non-aqueous electrolyte
solution. It is mainly used in portable mobile devices, with a power of over
95%, a discharge time of several hours, and a number of cycles of 5000 or more.
It is agile in response and is the most energy-efficient practical battery in
use today. In recent years, technology has also been continuously advancing, and
there are various applications of positive and negative electrode materials.
The mainstream power lithium batteries in shopping malls are divided into
three categories: lithium cobalt oxide batteries, lithium manganese oxide
batteries, and lithium iron phosphate batteries. The former has a high energy
density but slightly poorer safety, while the latter is the opposite. For
domestic electric cars such as BYD,
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