Theoretically, NMCs inherently have the advantage of developing towards high voltages. The standard test voltage of NMC half-cell is 4.35V, at which ordinary NMC can show good cycle performance. When the charging voltage is increased to 4.5V, the capacity of the symmetrical NMC (333 and 442) can reach 190, and the cyclability is not bad.

After charging to 4.6V, the cycle of NMC is not good, and the flatulence is also very serious. However, we believe that NMC can be charged to 4.6V through modification to meet the actual practical requirements.

The modified symmetrical NMC can reach a capacity of more than 200 in a 4.45V full battery, which is quite impressive. The method of NMC modification is basically the same as that of LCO. It is also bulk doping + surface coating, and it also has considerable technical content.

There is currently no market for high-voltage NMCs, because the market positioning of high-voltage NMCs is basically the same as that of high-end LCOs, and they are both used in the high-end 3C field. However, the application of high-end LCO in smart phones and tablets has just started, and natural high-voltage NMC has not been developed accordingly.

High-voltage NMC should be a continuation of high-end LCO. After high-voltage LCO drives the high-voltage demand of small batteries, high-voltage NMC replaces part of its market. After all, NMC still has a price advantage, which becomes more and more obvious with the rise of cobalt price.