subject: Memory Effect Is The Principle Of Crystallization In Lithium Battery Will Not Produce Such A Reactio [print this page] How will the books of the Lithium maintenance it will be right? This problem has plagued a large number of the friends (including me), today found a stuff, changed some content to see.
Lithium-ion battery cathode materials are usually composed of active compounds of lithium, anode is a special molecular structure of carbon. Common cathode material mainly composed of LiCoO2, charging, plus the battery cathode polarization of the electric potential to force release of lithium-ion compounds, embedded negative elements arranged in lamellar structure of carbon. Discharge, the lithium-ion from the lamellar structure of the carbon in precipitation, and positive re-combination of compounds. Lithium-ion mobile rise to a current.Laptop battery
Although the chemical reaction principle is very simple, but in the actual industrial production, the practical problems need to be considered much more: cathode material additives required to maintain the activity of several charge and discharge, anode material required to design the molecular structure level accommodate more lithium-ion; fill in the electrolyte between the positive and negative, in addition to stability, but also has good electrical conductivity and reduce the battery internal resistance.
Change the shape of a variety of laptop battery
Although the lithium-ion batteries are nickel-cadmium batteries few memory effect, memory effect is the principle of crystallization in lithium battery will not produce such a reaction, almost. However, lithium-ion battery capacity after repeated charge and discharge will continue to decline, its causes are complex and diverse. Mainly positive and negative changes in the material itself, from the molecular level, the positive and negative electrodes of lithium ion on the hole to accommodate the structure will gradually collapse, blocking; from a chemical point of view, is the active anode material is passive, there's the other side to form a stable compounds. Cathode material physics will appear gradually falling off, etc. In short, can ultimately reduce the battery charge and discharge process of free movement in the lithium-ion number.IBM Laptop Battery
Over-charging and over-discharge, lithium-ion batteries will cause permanent damage to positive and negative, from the molecular level, intuitive understanding, excessive discharge of carbon anode will lead to excessive release of lithium ion and makes it appear lamellar structure collapsed, over- will charge too much into the negative electrode of lithium ion hard carbon structure to go, and make some lithium-ion can no longer be released. This is also why the lithium-ion batteries are usually equipped with charge-discharge control circuit reasons.
