Cobalt acid lithium, manganese acid lithium, lithium iron phosphate and polymer lithium battery which is more secure?

Source: 2020 - 04 - 01 'hits: lithium cobalt oxide, lithium manganese acid, lithium iron phosphate and polymer lithium battery which is more safe lithium cobalt oxide, lithium manganese acid, lithium iron phosphate, and the safety of lithium polymer batteries. Many consumers have about battery safety. And cobalt acid lithium, lithium polymer batteries, lithium manganese acid battery, lithium iron phosphate battery's biggest advantage is high safety coefficient, support quick charge ( Large current charging) And wider operating temperature range. From the current use of lithium ion battery's main skills, first of all, lithium cobalt acid lithium manganese acid, lithium iron phosphate batteries and lithium polymer battery several types, their different data and structural characteristics affect production skills and application of battery, which brings different security. A, cobalt acid lithium batteries: cobalt acid lithium batteries poor safety, high cost. Mainly used for small and medium sized batteries. Widely used in notebook computers, mobile phones, MP3/4 and other small electronic devices. The biggest characteristic of the preparation method is after a full charge, there are still a lot of lithium ion in anode. Negative tolerance is not more adhesive that is to say, the anode of lithium ion, but in the case of overload, the rest of the lithium ion can swim to the cathode, anode is not fully inclusive will form a cathode for lithium metal, because the metal lithium dendrite, so called dendrites, dendrites, will supply pierced diaphragm, diaphragm Pierce will form the internal short circuit. Because the main components of the electrolyte is carbonate, lightning and the boiling point is very low, so at high temperatures, they will be ashes or even explode. On the small capacity lithium battery, control of lithium dendrite is relatively simple. As a result, the cobalt acid lithium is limited to small capacity battery, such as portable electronic devices cannot be used for power battery. 2, polymer lithium battery: the theory of energy available in practice there is a lot of progress, and cobalt acid lithium battery, can better play to the effect of high capacity, but from the data, polymer lithium battery also choose cobalt acid lithium and organic electrolyte, so there is no root treatment security problems. From the point of view of use, the battery that attack can attack the over current short circuit. Polymer lithium battery electrolyte is colloidal, not easy to leak, also ruled out the possibility of a leak, but will attack more intense burning, so therefore, spontaneous combustion is one of the largest risk polymer lithium battery. Polymer lithium battery chose aluminum composite flexible packaging in the structure, different from the metal shell liquid battery, once a safe hidden trouble, simple blasting liquid battery, polymer battery will only gas drum. Three, manganese acid lithium battery: manganese acid lithium battery is good information, it can ensure the complete state of active lithium ion can be fully embedded negative carbon hole, rather than the lithium cobalt oxide will have a positive must remain, from the root to prevent the attack of dendrites. Because, the structure of the manganese acid lithium jingjing make its function than a cobalt acid lithium oxide, even if the external short circuit, Rather than internal short circuit) And basically can prevent separation of metallic lithium and cause burning and blasting. Manganese acid lithium battery not only has a huge market space, but also a huge technical development space. With three metadata such as lithium iron phosphate and compared the positive data, manganese acid lithium is rich in resources, low cost, no pollution, good safety, good multiplier function, etc. Four, lithium iron phosphate batteries: this is an interesting power battery, can be used for power tools and vehicles, lithium iron phosphate battery theoretical capacity is 170 mah/g, data can be made of the capacity of 160 mah/g. In terms of safety, lithium iron phosphate crystals in p - O key is stable, not easy to decompose. Even in the case of high temperature or overcharge, the same structure will not collapse like lithium cobalt oxide to produce heat or forming strong oxidizing substances, thus excellent safety. Lithium iron phosphate batteries can reach 350 ℃ hot peak - 500 ℃, and manganese acid lithium cobalt oxide and the hot peak of lithium-ion batteries is only about 200 ℃.