South Korea has developed a new electrode material so that lithium ion batteries can be recharged for 6 minutes to talk for 5 hours!

The research team at Pohang University of Science and Technology has developed a new electrode material that allows lithium-ion batteries to fill 75 % of their charge in six minutes.

The team, led by Professor LeeJin-woo of the Department of Chemical Engineering, said in a statement that the electrode material could be used in lithium-ion batteries and that the researchers had found a simpler way to synthesize layered porous inorganic materials.

The holes in the material are divided into small holes, which are divided into three types: small holes(below 2 nm), middle holes(2-50 nm), and large holes(more than 50 nm). The layered porous structure contains at least two types of three holes.

This material is especially suitable for batteries because it has a wide surface area and is extremely effective when transmitting chemicals. The problem is that mass production is somewhat difficult because the process is complex and requires the adjustment of various holes at the same time.

The research team controlled the evaporation conditions of the solvent, generated block copolymers at the same time and completed phase separation so that porous inorganic materials could be synthesized.

In addition to titanium niobium oxides, we can also apply this technique to a variety of inorganic materials such as tungsten and titanium dioxide. The team found ways to increase the permeability of electrolytes in the electrode, making it easier to transport lithium ions. Because the oxidation and reduction surface area widens, the charging speed is faster.

Professor LeeJin-woo said: "Although layered porous inorganic materials have many advantages as energy electrodes, because of the complex synthesis process, they can not really demonstrate their strengths. We will further study and find ways to enhance the performance of various energy electrode materials using new materials, not limited to lithium ion batteries. "

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