Sungkyunkwan University reported that its research group has developed lithium ion battery high-performance electrode active materials based on the structure and function of spider webs, successfully solving the problems of high-capacity material degradation and slow charge and discharge speeds, and can be applied to various problems. Type of high capacity secondary battery.
Currently, in order to overcome the disadvantages of limited capacity (about 370 ma h/g) of graphite materials for lithium-ion battery anode materials, scientists have developed many materials such as high-capacity silicon and transition metal oxides. However, most of the high-capacity materials have lower electrical conductivity. Slow, resulting in slow charging and discharging speeds or problems such as rate limiting characteristics and long term instability due to volume expansion during charge and discharge.
The Korean research team used the ice-membrane method to build a three-dimensional network of spider-web-shaped structures into carbon nanotubes with multiple guarantees, and processed them with ozone to make the surface of the nanotubes resemble a spider web with elasticity. The study was published in the international academic magazine Advanced Energy Materials.
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