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Who is the future of ternary lithium-ion batteries?

Who is the future of ternary lithium-ion batteries?

Release date:2018-11-16 author: clicks:

There is no doubt that in the upcoming electric car revolution, the ternary lithium-ion battery will be the real protagonist, an unshakable route for the next ten or even twenty years.


Moreover, once the lithium-powered battery has developed over a period of more than ten years, the whole industry chain will form a stable, complete and mature supporting (the industrial supporting is a huge moat, the entire industrial chain will mature, and the investment may require trillions of dollars, this is any other The technical route of the new technology route is insurmountable. The technical route of lithium-ion batteries is even more difficult to shake.


Therefore, the lithium battery is the undisputed champion in this ring game.


However, there are many technical routes inside the lithium battery technology route, which are roughly lithium cobaltate, lithium titanate, lithium manganate, lithium ferrite, ternary batteries, etc., friends may pay more attention to which of these technical routes Advantage. Next, a series of in-depth discussions.


Primary election


Let's talk about lithium cobalt oxide: the cycle performance is too bad, and the extremely rare metal cobalt is used in a large amount. The disadvantages are too obvious, and its fate is only eliminated.


Lithium titanate: high charging rate, long life; but there is also a clear shortcoming - the energy density is too low, resulting in high cost.


Its characteristics are similar to supercapacitors, and this fatal flaw also hinders its becoming the mainstream route of the power battery, so it can not stand out in the primary election.


The third is to say that the lithium manganate lithium ion battery has low cost and high charging rate; however, the high temperature performance is poor and the cycle is not good.


Therefore, lithium manganese oxide lithium ion batteries are rarely used directly as power batteries, but other materials are simultaneously added to form modified batteries, such as nickel and cobalt to become nickel-cobalt-manganese batteries, thereby achieving a balance of performance.


But after these improvements, it is no longer a simple lithium manganate battery, but has become one of the ternary battery types.


The results of this discussion indicate that lithium manganate should also be eliminated.


In the numerous technical routes of lithium batteries, the two technical routes of lithium iron phosphate vs. ternary batteries are the most rigid.


Lithium iron phosphate has high safety and long life, but low energy density, poor low temperature performance and poor consistency;


The ternary battery has high energy density, good consistency, good low temperature performance and low cost, but the safety performance is poor, and the cycle life is not as good as that of the iron lithium battery.


At present, the most mature industrial chain of lithium iron phosphate is in China, and we have more core technologies in related fields. The three-element battery is represented by Japan and South Korea, and is more mature.


Therefore, the confrontation of these two technical routes has a meaning of China vs Japan and South Korea.


In the past year, I still tirelessly think about this problem every day, read a lot of articles in related fields, read many interviews with technical experts in related fields, and think about the advantages and disadvantages of the two power lithium battery technology routes.


Finally, today I think I have a clearer understanding, and I am determined to complete this draft that has been dragged on for more than a year. Well, there is not much nonsense, and the finals are officially started!


finals


There are roughly seven dimensions for evaluating power battery performance:


1, security


2, energy density


3, cycle life


4, the cost


5, charging rate


6, battery cell consistency


7, low temperature performance


As a qualified technical route, there can be no obvious shortcomings in any of the above aspects. It is a feasible route to achieve balance in all aspects.


1, security


In this respect, the lithium iron phosphate lithium ion battery has a distinct advantage: it can be decomposed when the temperature reaches 480° or more, and can be subjected to severe tests such as acupuncture and fire.

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