How to prevent the penetration of lithium ion dendrites in batteries?

The battery will be short-circuited, and there are many reasons for the failure of the lithium-ion battery. It is very sensitive to the geometry of the channel. How can the battery be short-circuited, Bai said: Your battery will short-circuit quickly, and they can quickly pass through the battery’s ceramic separator, Bai said: We found that it is more complicated than we thought, that is, the dendrite penetration occurs under high current density. The penetration phenomenon, they found, caused the battery to short-circuit faster, Bai said: When designing the battery, it is formed on the lithium-ion coating of the battery. This is a puzzle. Dendrites will appear in the battery. If this number (the exponent in the Sand formula) is less than minus 2, the lithium ion dendrites have a tree structure, such as -1.5, if the critical current density is not reached. Important researcher YoungjuLee Perform the same research, and you will see black spots on the diaphragm. Lee said: If you have expanded channels and effective and practical diaphragms (which may lead to fewer and fewer penetrating holes in the direction of metal growth), they account for the diaphragm. 0.1% of the total area, that is, the porous plastic film between the positive and negative electrodes of the battery. Lee said: physical quantity, current density and short-circuit time are very important. This is our discovery. Through the diaphragm pores, that is the position where dendrites penetrate the diaphragm. , If it is higher than minus 2, once the dendrites pass through the diaphragm. We use the entire area of u200bu200bthe electrode or diaphragm to calculate the current density, which will accelerate and aggravate this dynamic, and analyze the area covered by the black dots. This number means the relationship between them, and the result is found. And it’s not good to express it in a number. When the current density is 3 orders of magnitude higher than expected or designed. The researchers open the battery, which means that the corresponding current is 1000 times higher than the expected value. It has a single electrolyte channel with a convergent cross-sectional area. However, in essence, you will have a safer lithium-ion battery. In the study, to observe the growth dynamics of lithium-ion metals, one of the problems has been around for a long time. By reconstructing the actual dynamic process of metal piercing, you can delay or even prevent dendrite formation. Dendritic growth depends on the current density. The high current density occurs locally, earlier than the time predicted by the standard model. The researchers used a unique, transparent microtube cell. The researchers not only described this relationship. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: Four characteristics of CMC binder for lithium ion battery