No.
Because for power banks, the power banks currently sold by the factory use battery packs composed of lithium batteries that can be repeatedly charged and discharged. And because lithium batteries are very stable batteries, therefore lithium. batteries and magnets will not react, and conversely, power banks and magnets will not react either. So it doesn't matter if the cell phone and the magnet are placed together.
Are cell phones afraid of magnets?
During the experiment, scientists carried out nearly 100 charging and discharging processes on the lithium-ion battery with iron oxide electrodes, and found that the degradation of the Battery was mainly caused by the accumulation of lithium oxide and the decomposition of lithium oxide. electrolyte. The raw material of iron oxide electrode selected for chis experiment is magnetite, which can be completely decomposed into metallic iron nanoparticles and lithium oxide during the first discharge. However, in the subsequent charging process, the above reaction cannot be completely reversible. As a result, metallic iron and lithium oxide residues are present in the battery. During subsequent charge and discharge cycles, the mixed material of lithium oxide and metallic iron nanoparticles gradually accumulates with the loss of electrolyte and electrode, the mixed material inside the battery will also affect the transfer of positive and negative electrons, and ultimately performance. of the entire battery Attenuation occurs.
Scientists point out that operating the battery at low current can restore some capacity by slowing down the charging speed to allow enough time for transmissionelectrons. However, to completely resolve this issue, other solutions are needed. They believe that the capacity loss can be improved by adding other elements to the electrode materials and changing the electrolyte. If the above technology can be used in the field of new energy vehicles in the future, it will greatly improve the sustainability of pure electric vehicles and increase their value retention rate.
How magnets affect mobile phones
1. There are magnets in mobile phones, such as speakers, vibrator motors and flips, which are all made of magnets. The external effect of magnets is a static magnetic field, which is not alternating and therefore does not produce an electromagnetic field.
2. The mobile phone circuit is shielded, but it only shields the electromagnetic field and has little effect on the static magnetic field.Other household appliances and magnetic magnets are not good or accurate to assemble. There are too many magnets in electrical devices. Magnets have an effect on magnetic recording materials.
3. Another aspect is that the magnetic field will interfere with the signal (electromagnetic wave). When you talk on the phone, you will not be able to hear the sound. the other part clearly due to the influence of the magnetic field.
Detailed information
Magnet
The composition of magnets consists of iron, cobalt, nickel and other atoms . The internal structure of the. atoms are relatively special, they themselves have a magnetic moment. Magnets can generate a magnetic field and have the property of attracting ferromagnetic substances such as iron, nickel, cobalt and other metals.
Types of magnets: Shape magnets: square magnets, tile magnets, magnetsspecial shape nts, cylindrical magnets, ring magnets, disc magnets, bar magnets, magnetic backing magnets, attribute magnets: samarium cobalt magnets, NdFeB magnets (strong magnets), ferrite magnets, alnico magnets, iron chromium magnets cobalt.
Industrial magnets: magnetic components, motor magnets, rubber magnets, plastic magnets, etc. Magnets are divided into permanent magnets and soft magnets. Permanent magnets are added with strong magnetism to align the spin of the magnetic material and the angular momentum of the electrons in a fixed direction is added with electricity.
Baidu Encyclopedia: Magnet