The powerful performance of lithium iron phosphate battery

A new study has answered why use lithium iron phosphate material as the battery positive usually let the battery performance than expected: the secret of which comes from its internal defects.

Materials scientists MingTang said in a press release: "we all know the material effect is very good, but for the real reason why scientists has been debated. This material is not so good in many ways, but sometimes will be surpassed expectations."

The researchers found that in the process of manufacture of the lithium iron phosphate, it appeared some of lattice atom a called the defects of dislocation phenomenon. Scientists through the study found that the trans defects may be able to solve this kind of material admirable performance. This kind of defect for the anode material can release from the surface of the larger area and collecting lithium ion.

Before this, scientists assumed that the lithium ions can only move in a single direction, thus limiting the lithium ions can release and absorption material surface size. Microscopic imaging technique and computer models allow scientists to observed movement of ions in the process of the battery state. Scientists analysis showed that the defect of existence for ion in a new direction.

This kind of defect effectively increased the lithium iron phosphate surface active area of the nanorods, let the spread between the anode and electrolyte of lithium ion more efficient. Tang said: "most of the battery anode is into a thin plate shape to increase lithium ion movement in one direction. Our findings have changed our view of lithium iron phosphate shape optimization design. The existence of this kind of defect that lithium ion can more direction, which means that we design to maximize the performance of standard is completely inaccurate."

Even the experts in the field of battery research also not all understand lithium ion batteries and components of the electrochemical properties and process. But as more scientists to assumptions and analysis these electrochemical process and performance, we will be able to have more perfect, let me lithium battery performance of the as efficient as possible.

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