Disadvantages of lithium iron phosphate batteries

The so-called lithium iron phosphate battery refers to the lithium ion battery with lithium iron phosphate as the positive electrode material. When it comes to lithium iron phosphate batteries, what you see is a series of reliable words such as environmental protection, safety and large capacity.

But lithium iron phosphate battery shortcomings we must also understand that in the process of use to take precautions. For example: the low temperature performance is poor, not good low temperature resistance, the anode material tap density is small, low tap density can be said to be the biggest drawback of the lithium iron phosphate, according to the national automobile starting batteries sales post-sale feedback, actually the most and some lithium battery, battery low temperature performance was quite good, in Harbin city north of domestic use fully qualified, such as the basic will not stall.

The only thing about the lithium iron phosphate battery is that I think it has no advantage in the application field of small battery such as mobile phone battery due to its large size. Even though it has low cost, good safety and good stability, if it is too large, it can only replace lithium cobalt oxide in small amount. That is, the volume of lithium iron phosphate battery of the same capacity is larger than lithium ion battery such as lithium cobalt acid, so it has no advantage in micro battery.

When used in power batteries, lithium iron phosphate batteries, like other batteries, need to face the problems of uneven material composition and poor production process control, that is, battery consistency. The poor electrical conductivity is the most critical problem. The fact that lithium iron phosphate has not been widely used this late is a major problem. This problem can be solved by adding C or other conductive agents. The specific capacity of 160mAh/g or above has been reported in the laboratory. The lithium iron phosphate material has been added as a conductive agent in the production process, and it is not needed to make batteries. Actually the material should be: LiFePO4/C, such a composite material.

In addition, some media reported that consumers reported that the duration of lithium iron phosphate battery was short, and they could not be recycled and reused after scrapping. There is no recoverable value of it. These are some manufacturers who use false one-sided reports to earn profits and write them indiscriminately ,which does not comply with scientific facts ,will seriously hinders the future development of lithium iron phosphate.

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