High-performance Na-ion Battery Material Development — Part 3
The midstream of the value chain
Working principle
The system is operated primarily by the movement of sodium ions between the cathode and anode: during charging, sodium ions are released from the positive electrode into the electrolyte, which embeds the negative electrode, causing the negative electrode to be sodium-rich; while during discharging, the opposite is true.
Performance advantage
High energy density, high safety (can be discharged to zero volts), environmental protection (no lead, cadmium, mercury, or any other pollution-causing elements), wide resource sources, and low cost.
Battery type
The types of cells are classified in terms of structure, including soft pack batteries and cylindrical batteries; from the classification of material systems, they include solid-state sodium-ion batteries, sodium-sulfur batteries, room-temperature sodium-ion batteries, and zebra batteries.
Battery production
Due to the working principle of sodium-ion batteries and the high similarity of battery materials to lithium-ion batteries, the process, and equipment for battery production can be reused.
Battery system
As sodium-ion batteries are only in their infancy in terms of commercialization, there are relatively few studies on their use. The AB battery system solution has been developed by CATL in terms of battery system integration. That is, the sodium-ion battery and lithium-ion battery are mixed and matched in a certain proportion, integrated into the same battery system, and their balance is achieved through the BMS control.
To be finished…….
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