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In the current field of battery technology, semi-solid batteries and lithium-ion batteries with a mix of three materials are undoubtedly two highly prominent “stars”, and have been chosen as popular options by numerous terminal equipment manufacturers. These two types of batteries seem to serve the same goal – to provide power for devices, but in fact, they differ greatly in many key aspects. So, what are the internal factors that shape their respective characteristics and lead them to different technical and application paths? Next, the Grep team will delve into multiple core dimensions to conduct an in-depth analysis, guiding everyone to penetrate the surface and deeply understand the fundamental differences between semi-solid batteries and lithium-ion batteries.
I. What are semi-solid batteries and lithium-ion batteries with a lithium-metal anode?
Semisolid battery
Definition: Semi-solid batteries are a type of battery technology that lies between traditional liquid batteries and all-solid-state batteries. The electrode materials of these batteries are partially or entirely in a solid form, while the electrolyte is a system that combines solid electrolytes with liquid electrolytes, or a gel-like substance containing a certain amount of liquid electrolyte.
Structural characteristics: The structure of semi-solid batteries is similar to that of traditional liquid batteries, but there are differences in the composition and distribution of the electrodes and electrolytes. The electrodes usually use high-nickel multi-materials, lithium-rich manganese-based materials, etc. as the positive electrodes, and carbon-silicon negative electrodes as the negative electrodes to enhance the energy density and charging-discharging performance of the battery. In terms of the electrolyte, it includes both solid electrolytes with high ionic conductivity and good stability, such as oxides and sulfides, and a small amount of liquid electrolyte to improve the efficiency of ion transmission.
Tri-metallic lithium battery
Definition: A ternary lithium battery is a lithium-ion battery whose cathode components include nickel, manganese and cobalt.
Structural features: The ternary lithium batteries generally adopt the laminated pouch battery manufacturing process, which has a high energy density and excellent charging and discharging performance. The positive electrode material is ternary material, and the negative electrode material often uses graphite or silicon-carbon negative electrodes to enhance the capacity and charging-discharging efficiency of the battery.
