Do lithium iron phosphate batteries require cobalt?

Introduction Do lithium iron phosphate batteries need cobalt? Lithium iron phosphate batteries require cobalt. Solid-state batteries must use cobalt, and the proportion is higher than that of lithium-ion batteries, because lithium iron phosphate batteries are suitable

Do lithium iron phosphate batteries require cobalt?

Lithium iron phosphate batteries require cobalt, and solid-state batteries need to use cobalt, and the proportion is higher than that of lithium ion batteries, because lithium iron phosphate lithium ion batteries are suitable for large-scale use in grid energy. storage.

Solid-state batteries must use cobalt, and the ratio is higher than that of lithium-ion batteries. Since iron phosphate lithium ion batteries are suitable for solid-state batteries, cobalt should be used and. the ratio is higher than that of lithium-ion batteries, because lithium-ion iron phosphate batteries are suitable for large-scale use in on-grid energy storage. Cobalt-free batteries are far from being available. Panasonic's cobalt demand could more than triple over the next five years.

Tesla's statement at that time alsoly overturned earlier suspicions about Tesla from the outside world. Everyone thought Tesla would use lithium iron phosphate battery technology in the China-made Model 3. According to relevant media reports, Tesla and Chinese power battery supplier CATL will produce electric vehicles without cobalt batteries in the Shanghai factory after entering into a partnership.

This news also makes the outside world believe that Tesla will change the technology design path, and the choice of power batteries will also include ternary cobalt and lithium iron phosphate batteries. In this regard, some netizens asked: "After using cobalt-free batteries, does it mean that they are lithium iron phosphate batteries?"

(Images/Text/Photos: Q&A) Xingrui Ideal ONE Model Y Model X HiPhi The difference between lithium batteries

Batteries in bedhium containing cobalt are better than those containing cobalt.

As an important raw material for lithium-ion batteries, cobalt can significantly increase the energy density of lithium-ion batteries. In order to replace cobalt, battery manufacturers often increase the use of nickel to increase the energy density of batteries. However, the increased use of nickel will lead to a reduction in the structural stability of corresponding electrode materials, which will affect battery life and safety.

Lithium batteries that still contain cobalt are therefore better at present, and it seems that the cobalt-free solution is still difficult to achieve. So there isn't much choice.

Basic properties of cobalt:

The chemical valencies of cobalt are +2 and +3. It does not interact with water at room temperature and is stableit in the humid air. It is oxidized to form CoO when heated above 300°C in air and burns to Co3O4 when white hot. The fine metal cobalt powder made by the hydrogen reduction method can ignite spontaneously in air to form cobalt oxide. The electrode potential shows that cobalt is a moderately active metal.

Its chemical properties are similar to those of iron and nickel. Oxidation occurs at high temperatures. When heated, cobalt reacts violently with oxygen, sulfur, chlorine, bromine, etc. to form the corresponding compounds. Cobalt is soluble in dilute acid and is passivated in fuming nitric acid forming an oxide film. Cobalt is slowly attacked by hydrofluoric acid, ammonia and sodium hydroxide. Cobalt is an amphoteric metal.

Pure cobalt battery life

1. Different characteristicsristics

1. Lithium polymer battery: shaping flexibility; higher mass ratio (3 times higher). MH-Ni batteries); wide electrochemical stability window, up to 5 V; perfect safety and reliability; longer life, less capacity loss;

2. Lithium cobalt oxide battery: stable structure, high capacity ratio, outstanding overall performance, but its safety is poor and the cost is very high.

2. Different applications

1. Lithium Polymer Battery: It has been more than 2 years since lithium-ion polymer battery technology matured and was commercialized globally, although sales are increasing rapidly. , However, its market share is still about 10%, which is incomparable with the 90% market share of liquid lithium batteries and is lower than people's expectations.

2. Lithium cobalt oxide battery: The application of the batteryie lithium-cobalt oxide is still relatively few in number. The technology of using cobalt-lithium for small batteries is very mature, but the cost of cobalt-lithium is now too high. Many companies use manganese-lithium instead.

Lithium cobalt oxide has stable performance and is currently the most mature technology used in mobile phones. However, the biggest disadvantage of its application is its high cost. Cobalt is also a relatively rare strategic metal. also has some advantages when used in power batteries.

Detailed information:

< p>Precautions for using lithium polymer batteries:

1. Pay attention to short circuit conditions

Lithium-ion polymer batteries are prone to short circuits during the process ofcharge. Including: internal short circuit, external short circuit, etc. Although most lithium-ion batteries now have short circuit protection circuits and explosion-proof wires, in many cases this protection circuit may not work under various circumstances, and the role of explosion-proof wires is also very limited.

2. Do not overcharge when charging

If the lithium-ion polymer battery is charged for too long, the possibility of expansion will increase.

Baidu Encyclopedia - Lithium-ion polymer battery

Baidu Encyclopedia - Lithium-cobalt oxide battery

The lifespan of a pure cobalt battery is about 330 times.

1. Pure lithium cobalt oxide battery is a type of polymer battery. Only the positive electrode material uses pure lithium cobalt oxide. Pure lithium cobalt oxide battery is a better material for batteriespolymers. The lifespan is relatively longer.

2. Lithium polymer batteries use file alloy as the positive electrode, polymer conductive materials, polyacetylene, polyaniline or polyparaphenol as the negative electrode, and organic solvents as the electrolyte.

3. The specific energy of lithium polyaniline battery can reach 350W.h/kg, but the specific power is only 50-60W/kg, the operating temperature is -40-70 degrees, and the service life is from -40 to 70 degrees. about 330 times.

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