On the Thinkpad laptop computer batteries and maintenance of (a)
On the Thinkpad laptop computer batteries and maintenance of (a)
We love machine exactly how lithium battery laptop battery maintenance is correct? This problem has plagued many people for a long time at the forum there is no uniform opinion. I looked up some information and consulted a friend (who the Department of electrochemical professional doctorate), and the introduction of the Friends under the advice of a well-known domestic battery, deputy director of the Institute. Can not arrogantly have resolved the issue and maintenance of lithium ion, but some of his recently acquired knowledge and experience to write about. The author of the study beyond the high school chemistry chemical Coban Orsay, have since been studying and working in the IT field, one must understand that even more shallow, N. of salt, but expert Paizhuanfuzheng.
Lithium-ion battery cathode material of lithium active compounds are usually composed of negative electrode is a special molecular IBM 02K7054 Battery structure of carbon. The common major components of LiCoO2 cathode materials
Charging
Positive reaction: LiCoO2 Li1-xCoO2 + xLi + + xe -
Negative reaction: C + xLi + + xe-CLix
Battery overall reaction: LiCoO2 + C Li1-xCoO2 + CLix
Discharge, then the occurrence of the above reaction of the reverse reaction.
Charging, the battery IBM ThinkPad R60 Battery added to the positive pole of the electric potential to force the release of compounds Li + ions, embedded negative elements arranged in lamellar structure of the carbon. Discharge, Li + ion from the lamellar structure of carbon in the escape and re-cathode combination of compounds. Li + movement to promote a current.
Reactive Although very simple, but in the actual industrial production, the practical problems need to be considered much more. Cathode material additives required to maintain the multiple charge-discharge activity, the negative electrode material, which needs to design the molecular structure of class in order to accommodate more Li + ions, fill in the electrolyte between IBM ThinkPad A21M Battery the positive and negative electrodes, in addition to maintaining stability, but also need to have good electrical conductivity, reducing the battery internal resistance.
The strict sense, despite the capacity of lithium-ion battery degradation, but not nickel-cadmium battery memory effect. Memory effect of the principle is that crystallization, in the lithium batteries will have little reaction.
Lithium-ion battery IBM ThinkPad A20M Battery capacity after repeated charge-discharge will decline, its causes are complex and varied,
One is the anode and cathode material itself changes, from the molecular level, the positive and negative electrodes of lithium ion on the hole to accommodate the structure will gradually collapse, congestion, from the chemical point of view, is the active anode material is passive, side reaction occurs to form a stable the other compounds. physically cathode material will appear gradually falling off, etc., in short, can ultimately reduce the battery charging and discharging process of the free movement of the number of Li + ions.
Second, catalytic additives, changes in the molecular structure of the original catalytic catalytic additives will gradually change the structure, and eventually could not even play a catalytic role in the opposite.
Third, repeated charge and discharge in the electrolyte gradually variability, resistance increases. Process bad electrolyte batteries IBM ThinkPad A20 Battery may be due to improper control of some elements faster degeneration.
