Lithium battery into two categories: non-rechargeable and rechargeable

By | April 17, 2018

First, the lithium battery introduced

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Lithium into two categories: non-rechargeable and rechargeable. Non-rechargeable batteries as disposable batteries, it can only be a one-time chemical energy into electrical energy, electrical energy can not be restored back to chemical energy, such as lithium manganese dioxide batteries. Rechargeable batteries as secondary, which is commonly known as lithium-ion battery (LI-ion). Lithium-ion battery cathode of lithium-containing transition metal oxides, carbon anode is a material such as graphite, etc., containing lithium salt electrolyte is an organic solution. Both positive and negative cells or in the battery separator, the lithium ions in the form are to exist. Batteries at work, the lithium ion in the positive and negative electrodes and electrolyte membrane in the directional movement. When the battery is charging, the cathode of lithium ion to the electrolyte release, this process is de-embedded; negative ion from the electrolyte in the inhalation, the process is embedded. The battery discharge process and the situation is reversed, this time charging and discharging the lithium ion intercalation and deintercalation from the process as like a rocking chair swaying, it was the image of said lithium-ion battery as a “rocking chair batteries.”
Lithium-ion batteries and nickel-metal hydride battery, has many advantages. Lithium-ion

battery memory effect does not exist; the same capacity, the volume is very small; use voltage of 3.6 V, is the nickel-cadmium batteries, nickel metal hydride batteries 3 times; can be used in wide temperature range (-20 ℃ ~ 60 ℃) , and Ni-MH battery (0 ℃ ~ 50 ℃). While lithium-ion battery self-discharge rate is relatively low. Self-discharge rate refers to the period of time, do not use the battery in case of loss of power automatically percentage of total capacity. Usually at room temperature, Ni-MH battery from 25% to 35% per month, while the lithium-ion battery is only 5% to 8% per month. But lithium-ion batteries are also some people are not satisfied. Such as: lithium-ion batteries have life, usually two years, and do not use the state in the storage period of time, some of its capacity will be permanently lost. Lithium-ion battery anode material from the factory has already begun its failure in history, different temperature and battery fully charged state, its impact is different from Table 1 data (capacitance accounts for the remaining percentage of the original capacity) of column.

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