Functionalized Ni-rich Cathode and Binder of Lithium ion battery via Plasma-assisted Mechanochemistry
발표자
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초록
내용
Ni-rich cathode materials due to high practical capacity and low cost are promising materials for commercialization. However, Ni-rich cathode materials have some difficulties including serious capacity degradation during long-term cycling, thermal instability. In this work, we used the plasma-assisted mechanochemistry (PMC) process to overcome these disadvantages and enhanced interfacial interactions between NCM811 microparticles and PVDF binder. The PMC process creates a covalent bond by applying mechanical shear and various plasma treatment, which greatly increases the interfacial affinity between NCM811 and PVDF. The frictions with plasma treatment were formed sturdy interactions between NCM811 particles and PVDF. The PVDF fully and thinly covered the NCM811 surface to maintain their structures and maximize the dispersity of the electrode materials. This simple approach enhanced the electrochemical performances as well as offering easy control of the surface characteristics of NCM.