Since the beginning of this year, benefiting from the explosion of new energy vehicle terminal sales, lithium batteries have also been popular, and the exponential increase in the prices of raw materials lithium carbonate and lithium hydroxide has also made enterprises and the market turn their attention to better costs. This has led to the emergence of various alternatives to lithium-ion batteries this year, including sodium batteries, aluminum batteries, and magnesium batteries.
So can these batteries really replace lithium batteries? The result, of course: no.
At present, the most important indicators of power batteries include energy density, safety performance, cycle life, manufacturing cost, and low-temperature level. Next, let's take a look at how powerful these new batteries are in publicity.
Aluminum battery: The energy density is three times that of lithium batteries, the cycle life is seven times higher, the cost is 50% lower, and there is no explosion or spontaneous combustion.
Sodium battery: The energy density is equivalent to lifepo4, the charging is fast, 80% can be charged in 15 minutes, low-temperature resistance, and the decline is reduced.
Magnesium battery: raw materials are readily available, high safety, and the melting point is three times that of lithium.
Zinc battery: Cycle life is twice that of lithium.
If there is such an effect, there is no doubt that the lithium battery will die soon. But all of this is only in the laboratory stage, and there is still a long way to go before commercial mass production. Five years is obviously not enough. You must know that lithium batteries have been in commercial mass production since 1991.
Let's learn about lithium batteries together~
Lithium Ion Battery
The fundamental reason why lithium-ion batteries can occupy the current global power battery and consumer battery fields and can be used as mainstream batteries in various fields such as consumer electronics, new energy vehicles, and energy storage is that their comprehensive performance best meets the needs. Lithium-ion batteries such as lithium cobalt oxide batteries, lithium manganate batteries, lithium iron phosphate batteries, and ternary lithium batteries occupy a major position in their respective fields, and in order to further meet future needs, lithium-ion batteries continue to have new technological and technological progress of:
1) Negative electrode material: At present, the main negative electrode used in lithium-ion batteries is artificial graphite, with a specific capacity of 372 mAh/g. In the case of the energy density potential of traditional graphite negative electrodes and fully exploited, silicon-based negative electrode materials have become a strong lithium-ion battery. One of the effective means of energy density, the theoretical specific capacity of silicon-based anode material can reach 4200mAh/g, 10 times that of graphite, and it has the high conductivity of carbon material and the high capacity of silicon material and can be matched with high nickel ternary Improve the energy density of lithium-ion batteries.
2) Positive electrode material: The positive electrode material is currently mainly ternary positive electrode material and lithium iron phosphate positive electrode material. Among them, lithium iron phosphate positive electrode material is expected to develop towards lithium iron manganese phosphate, which not only strengthens the energy density by 20%, but also maintains excellent safety. performance, while ternary is low cobalt or even cobalt-free gradually becoming the mainstream, whether it is ultra-high nickel 9 series or quaternary battery, both reduce costs and enhance energy density.
3) Electrolyte: At present, the inorganic lithium salt lithium hexafluorophosphate is the main choice for lithium-ion batteries, but it is gradually unable to keep up with the development needs of lithium batteries due to its unstable chemical properties and serious inefficiency in low-temperature environments. LiFSI has the advantages of high ionic conductivity, high electrochemical stability, and high thermal stability. It can better meet the development needs of high energy density and wide operating temperature in future batteries, and is expected to be the best choice to replace lithium hexafluorophosphate.
4) Separator: Lithium-ion battery separators mainly use dry-process and wet-process separators as needed. In the future, coating wet-process separators, which will account for an increasing proportion, will not only effectively improve the puncture resistance of the separator but also further improve the safety performance of the battery. It can also maintain higher wettability with the electrolyte, reducing the internal resistance of the battery, and enhancing the discharge power.
5) Process: BYD's blade battery, CATL's CTP technology, Tesla's CTC technology, etc. all strengthen the lithium ion by optimizing the structure, removing redundant parts, and efficiently using space without changing the material itself. battery performance.
6) Solid-state lithium battery: The ultimate goal of liquid lithium batteries Solid-state lithium batteries can also continue to consolidate the status of lithium-ion batteries. Solid-state batteries are batteries that use solid electrodes and solid electrolytes. Since liquid electrolytes are no longer used, they spontaneously ignite, etc. The risk is reduced, and the energy density can also reach more than 500 Wh/kg, which further meets the requirements of consumers for battery life. All in all, lithium's dominance is irreplaceable for the time being.
Contact MANLY Battery at sales@manlybatteries.com to get your custom lithium battery.
