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What will be the next generation of lithium batteries?
Latest company news about What will be the next generation of lithium batteries?

On Secondary Batteries with Higher Energy Density/Specific Energy (Excluding fuel cells and atomic battery, because they are primary batteries, such as hydrogen fuel cells and metal/air fuel cells, fuel cells should be compared with oil, natural gas, bioethanol, internal combustion engines, and steam engine. The specific efficiency, specific power, specific cost, and specific pollution are not comparable to those of lithium-ion battery heads in any case. At best, lithium-ion batteries can be used for electric hybrid power, but internal combustion engines also have lithium-ion batteries for fuel The highest theoretical specific energy system for electric hybrid systems is either the lithium/silicon system or the lithium/air (real) system, neither of which may necessarily be achievable.
Metal lithium negative electrodes have been studied for over thirty years, and popular systems such as lithium-sulfur, lithium-air, and all solid-state batteries now rely on the use of metal lithium to obtain high specific energy. However, the dendrite problem of metal lithium negative electrodes has not been solved for more than thirty years, and I don't know if it is possible to solve it. In my opinion, it has been stagnant for thirty years without any substantial progress.
If the weight of the oxygen tank is included in the current research on lithium oxygen batteries, the energy density should be lower than that of conventional batteries. Only by using real air as the electrode reactant is meaningful work, and it is also difficult because nitrogen also reacts with lithium, and there are too many things in the air that can react with lithium.
The issue of silicon is now being addressed step by step, with the addition amount gradually increasing, which may be the closest to mass production (low silicon content systems already have mass production).
The specific energy of other metal elements (Na battery, Mg battery, Zn battery, Al battery) cannot exceed that of lithium. I don't think it will be the next generation battery. Why must we develop a system that theoretically performs worse than the previous generation of products?
In terms of auxiliary materials, such as graphene and solid electrolytes, the impact is not significant, at most it is just adding to the cake (if not adding chaos, the possibility of graphene having negative effects is now even higher), and it is not considered a new generation.
As for higher rate batteries such as supercapacitors and pseudo capacitors, I don't think they can be considered as the next generation, because as long as the energy density is reduced, there is always a way to achieve higher rates. Specific energy is a thermodynamic problem, specific power is a kinetic problem, and thermodynamic problems are undoubtedly more fundamental. Kinetic problems cannot exceed the limits specified by thermodynamics in any case.
So that's about it. The endpoint can be calculated as lithium metal with silicon, with a specific energy of approximately 1000Wh/kg, and now it's 300Wh/kg. It depends on how the middle is divided and how many generations it is divided.

Pub Time : 2023-04-05 15:56:04 >> News list
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