What makes lithium iron phosphate batteries so powerful?

A recent study has answered why the use of lithium iron phosphate as a battery positive electrode usually makes the battery performance exceed expectations: the secret lies in its internal defects. Materials scientist MingTang said in a press release: We all know that this material works very well, but scientists have been arguing about the real reason. This material is not so good in many ways, but sometimes it exceeds people's expectations. Researchers found that in the process of manufacturing lithium iron phosphate, some atoms in its crystal lattice showed a dislocation phenomenon called anti-site defect. Scientists have discovered through research that this anti-position defect may be able to answer the admirable performance of this material. This defect allows the cathode material to release and collect lithium ions from a larger surface area. Prior to this, scientists assumed that lithium ions can only move in a single direction, which limits the size of the surface of the material that can release and absorb lithium ions. Microscopic imaging technology and computer models allow scientists to observe the movement of ions during battery charging. The scientists disaggregated the statement that the existence of the anti-position defect caused the ion to appear in a new direction of movement. This defect effectively adds the active surface area of u200bu200bthe lithium iron phosphate nanorods, making the lithium ion propagation between the positive electrode and the electrolyte more efficient. Tang claims: Most battery positive electrodes are shaped into thin disks to add unidirectional movement of lithium ions. Our findings have changed our view on the optimal shape design of lithium iron phosphate. The existence of this defect allows lithium ions to move in multiple directions, which means that our design criteria for maximizing performance are completely inaccurate. Even experts in the field of battery research do not all know the electrochemical properties and processes of lithium batteries and their components. But as more scientists imagine and decompose these electrochemical processes and properties, we will be able to improve them more and make the performance of lithium batteries as efficient as possible. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete.