Analysis of lithium battery in aluminum foil surface topography affect battery performance

Source: 2020 - 04 - 11 he hath hits: time aluminum foil surface topography affect the performance of lithium battery abstract: 10 to 20 meters thick aluminum foil used in the cathode of lithium batteries. Smooth by comparing the chemical corrosion of aluminum foil and aluminum foil, aluminum foil surface morphology was studied on the properties of lithium battery. For high conductivity and particle size of LiCoO2 lithium battery materials, there was no significant difference between two kinds of aluminum foil the performance of lithium-ion batteries. However, for low conductivity and small particles of LiFePO4 materials, high discharge rates are very different. By optimizing the surface topography of aluminum foil and battery material granularity, can improve the performance of the battery. Lithium batteries; Battery performance. Surface treatment; Electrical conductivity; Smooth aluminum foil; Rough foil lithium ion secondary battery is considered to be the most promising future now power products, hybrid and electric vehicles will use lithium ion storage device to store more energy, wind energy and solar energy will be the main focus of family power research. Shows a consists of two electrodes of the battery: one electrode is coated cathode active material ( Such as lithium cobalt oxide, lithium manganese acid and lithium iron phosphate) Laminated on the aluminum foil collector; Other coating anode active substance ( As a natural graphite, for instance) Laminated copper foil collector, sandwich layer separators between two electrodes ( For example, polyethylene and polypropylene) , as a result, as a result of electronic electrode and organic electrolyte of lithium ion ( Such as ethylene carbonate ( EC) And the movement of the secondary battery diethyl carbonate ( 12月) ) 。 Battery and lithium iron phosphate, on the other hand, active material and rough aluminum foil in the form of significant differences also proved to affect the high rate of circulation characteristic of the battery. The increased contact with active and on the surface of the conductive material, rough foil cathode electrode slice of the performance of the improved. If it is possible to create a crater the size of the best activity and conductive material, rough, aluminum foil is thought to have a positive impact on battery performance.