Currently electric vehicles and energy storage devices used in lithium-ion batteries, cobalt and Nickel as the electrode material containing as often. The above metal elements of resource depletion has been a concern for the resource-rich elements, the electrode material development is desired. Such approach to the issue, as the Yokohama National University research group 27, the manganese and titanium consists of a new electrode material developed and announced.
Manganese・titanium-based material is a cobalt・Nickel-traditional material is higher than the capacity that is,previous research also revealed that had been. Therefore, like the above-mentioned resource issues in addition to the discharge capacity and energy density from the viewpoint of the drawn material.
However, manganese・titanium-based material is more than 50 degrees and not enough of its capacity cannot be demonstrated, the output out of the challenge was having. Also, the cycle life is short and decisive problem I have had.
This research group is material to nano size reduction,particles in the grain boundary increases the concentration approach was performed. Materials to nano-size can with a liquid electrolyte, the contact area is increased, the lithium ions move easier. Therefore, the charge-discharge reaction is smoothly prone even at room temperature sufficient capacity is not as dangerous. Also, the cycle life than conventional and significantly improve the result.
The study”mechanical milling method called”the method, the nano-size of material to get successful. This technique is material to the vessel in a ceramic ball to rotate together with the mixing・grinding system.
The research group high-performance manganese・titanium-based electrode materials of the successful development in resource depletion, the problem is likely to spread. Manganese and titanium are resources abundant element that is a big advantage get. Conventional cobalt・Nickel-based material to substitute if you can,the cost is also lower than the electric car spread can be expected.
The outcome of this research is 25 the date of the Material Today online edition of the Journal has been published.