Synthesis of Nanostructured Materials and their Electrochemical Study as Anode Materials of Lithium Ion Batteries

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Synthesis of Nanostructured Materials and their Electrochemical Study as Anode Materials of Lithium Ion Batteries
Kim, Chungho
Park, Jongnam
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Graduate School of UNIST
Nanostructured materials have been receiving increasing attention in recent years because of the interesting mechanical, optical and electrical properties that such materials offer. In particular, the development of nanostructured electrodes for lithium ion batteries has attracted the interest of a number of researchers due to the advantages offered in terms of new reaction mechanisms that are not possible with bulk materials, better buffering of volume expansion and shorter pathways for Li+ ion and electron transport. In field of current lithium ion batteries, it is necessary to use new negative electrode materials which have high capacity, low cost and environmental benignity. In tandem with above phenomenon, development of new nanostructured electrode materials for lithium ion batteries also work up the excitement of researchers due to many advantages. Successful strategies were that one method is surface coating for increase conductivity or reduce side reaction, aggregation of the nanoparticles and another method is controlling of nanoparticle’s morphology for enhance their specific surface area so that the kinetics would be improved and serve buffer space of the active material volume expansion. Although various methods have been previously developed for fabricating a self-assembled structure, these approaches tend to be based on either inert conditions or to rely on complex high temperature, high pressure process. And some approach (crystalline conversion reaction materials replace to amorphous conversion reaction materials) is not clearly veil the effect. To overcome these problems, new facile methods of anode materials have developed and the understanding of new anode materials synthesis mechanism and the improvement of lithium ion batteries were performed. For example, I introduce a facile method to prepare for the Ni2P nanostructures with controlled crystallinity and morphology and unveil a pure difference between crystalline and amorphous Ni2P as anode material for rechargeable lithium ion batteries. Furthermore, i developed Graphene Oxide Assisted Synthesis of Self-assembled Zinc Oxide for Lithium-Ion-Battery anode without hash condition.
Chemical Engineering
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