The Real Reason For Battery Capacity Fading
In fact, with the continuous improvement and optimization of science and technology, the washing machine in today’s society has helped us solve many cleaning problems and has become our good helper, so many users have encountered some problems about the battery during use. For example, why does the capacity of the battery decay. Next, in response to this problem, Voltai battery manufacturers summarize some experiences as follows:
1: Lithium battery manufacturers first analyze the changes in the structure of the positive electrode material of the battery; because the positive electrode material is the main source of the lithium battery pack, when the lithium iron phosphate battery is removed from the positive electrode, in order to maintain the neutral state of the material, then Metal elements are oxidized to a high oxidation state, accompanied by a composition transition. The transition of components easily leads to phase transfer and change of bulk phase structure. From the point of view of the analysis of lithium battery manufacturers, the phase transition of the electrode material will cause changes in lattice parameters and lattice mismatch. The induced stress will cause the breakage of the crystal grains and cause the propagation of cracks, resulting in material damage. The structure is mechanically damaged, so the electrochemical performance is degraded.
2: The lithium battery manufacturer will analyze the structure of the negative electrode material for everyone; the capacity attenuation of the lithium battery first occurs at the stage of formation, at this stage, SEI will be formed on the surface of the negative electrode, consuming part of the lithium ions. As the lithium battery is used, the change of the graphite structure will also cause the battery capacity to decrease, thus also causing the irreversible capacity decay of the lithium battery.
3: This point is also very important for lithium battery manufacturers, that is, the overcharge reaction of the positive electrode of the battery: when the ratio of the positive electrode active material to the negative electrode active material is too low, then the positive electrode overcharge is prone to occur. The capacity loss caused by overcharge of the positive electrode of the battery is mainly due to the production of electrochemically inert substances (such as Co3O4, Mn2O3, etc.), which destroys the capacity balance between our electrodes, which will also cause capacity loss.
As a lithium battery manufacturer, Voltai has been engaged in the customization of lithium iron phosphate batteries for many years. Many lithium-ion battery R&D personnel are customized on demand to meet your lithium battery customization needs. Professional R&D personnel provide you with a high-quality customized experience.
Post time: Apr-15-2021