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Why do lithium-ion batteries waste ?Can the loss of lithium-ion batteries be fixed?

11 May 2020 - Lithium ion battery,lithium ion batteries,motive power of electronic products

Why do lithium ion batteries waste ?Can the loss of lithium ion batteries be repaired? Can the loss of lithium-ion batteries be fixed? Lithium ion battery is the motive power of electronic products, if the battery consumption of electronic products is too big, greatly reduced the battery endurance of electronic products lithium ion battery. There are a lot of users complain about their electronic products battery life ability is too short, if the use of a long time, electronic products lithium ion battery life capacity will be relatively weakened, lithium ion battery in daily use is the common problem is loss, lithium ion battery discharge more do, the greater the loss of the battery will be.

lithium ion batterylithium polymer battery1LiFePo4 Battery

Why do lithium batteries wastage ?

Lithium ion batteries begin to wastage at the moment they leave the factory. This is due to the chemical nature of lithium-ion batteries, that is, the active material inside will gradually reduce its activity over time, and the parts that become inactive gradually lose the purpose of storing electric energy. The reason for the attenuation of the lithium ion battery is that the lithium ion will react with the electrolyte in the process of moving. In this way, the lithium ion has the necessary loss. Of course, the performance of the lithium ion battery will decrease with the addition of the charge and discharge times, which is quite normal.

Self-discharge refers to the natural loss of electric capacity of the battery when it is not in use. First, it is a reversible capacity loss, which means that the lost capacity can be recovered when charging. On the contrary, the negative and positive electrodes may have side reactions with the electrolyte in the charging state, and lithium ions are embedded and deem bedded. The lithium ions embedded and deem bedded in the positive and negative electrodes are only related to the lithium ions in the electrolyte. Therefore, the capacity of the positive and negative electrodes is not balanced, and this part of the capacity loss cannot be recovered during charging.

Lithium ion battery moves in different directions when charging and discharging. Lithium ion emits electrons to generate current when moving, but lithium ion will react with electrolyte in the process of moving, so lithium ion will have certain loss. As the number of charges and discharges increases, the number of lithium ions will decrease, and the performance of the battery will decrease. If the problem of lithium ion battery attenuation is to be solved, a new electrolyte must be developed to prevent the lithium ion from reacting with the electrolyte.

If do not use lithium-ion battery, the battery itself will also be self-consumption, so this process will also cause aging and oxidation and caused by internal resistance. In addition, the battery itself is relatively sensitive to the external environment. Temperature, humidity, the back change of the battery itself and the degree of oxidation will cause the change of the internal lithium ion. As long as the battery is not in a completely static state, the loss is certain.

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Can the loss of lithium-ion batteries be fixed?
Low temperatures can cause changes in the electrolyte inside a lithium-ion battery, prompting a chemical reaction in the freshly frozen battery. When the lithium ion battery is placed in a low-temperature environment, the microstructure of the lithium film on the surface of the lithium ion battery and the electrolyte as well as their interface will change significantly, resulting in a temporary inactivity in the battery and a decrease in leakage current. Therefore, the battery time will increase after recharging.

The old mobile phone lithium ion battery with automatic shutdown will be tightly wrapped with plastic wrap, as far as possible when the package, inside and outside a total of three layers, to ensure that the battery in a vacuum state. Then wrap three layers of newspaper around the plastic wrap to make the lithium ion battery completely sealed. After 48 hours in the refrigerator, the battery was removed and the six layers of paper film were removed one by one. No surface expansion or deformation was caused by the freezing of the lithium ion battery. Let it cool for a while, then charge it.

Close to scrap the lithium ion battery discharge and recharge thoroughly activate cells, specific methods of mobile phone, depth of discharge for through out the internal power to achieve a deeper level of recharging, with a specific device to connect phone with a low voltage small bulbs, inside the battery power will transfer to the small bulbs, until all light. Under normal circumstances, the phone will shut down automatically if it is connected below the rated voltage of 3.6 volts, and the phone's battery can be recharged after discharge for a longer time.

The capacity of the battery can be restored through repair, the service life of the battery can be prolonged, and the performance of the battery can be improved. It is not possible to prevent the loss of lithium-ion batteries that have been used for a long time, and the loss ratio is as high as 30-40%.It is not recommended that users of new electronic products use deep discharge to restore the battery capacity of electronic products. In fact, the battery loss within 10% does not affect normal use. This deep discharge method can be used when the battery has been used for a long time, the battery loss is large, and the battery life is obviously shorter.

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