The volume expansion of silicon particles will lead to continuous rupture and regeneration of SEI film, which not only consumes a large amount of electrolyte and active lithium, but also accumulates a large number of side reaction products inside the cell, so that the overall thickness of the cell continues to increase, while the cell's usable capacity is also declining. In addition, the volume expansion rate and capacity retention rate of the high silicon system core are worse than those of the PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC, which indicates that there is still a long way to go for the optimization and modification of the high silicon system core.
Anode materials are a broad category, and the questions you should ask are not detailed enough. It can be popular science, PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC iron removal anode material at present in the commercial should be carbon and silicon more common. Carbon is also divided into graphite, hard carbon, soft carbon, and graphite is also divided into many kinds, artificial graphite, natural graphite, intermediate phase. Hard carbon is also biomass and non-biomass. Soft carbon, too, should be fine.
The carbon anode mentioned above has its special PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC treatment process. So, the problem is a bit of a macro problem. But all of them have one thing in common: they need heat treatment. Of course, the temperature and the environment are not quite the same.
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