Synthesis and characterization of CNT/LNMC nanocomposite electrode for Lithium Ion Battery

10th IEEE International Conference on Nanotechnology Pub Date : 2010-08-01 DOI:10.1109/NANO.2010.5697803

Gurpreet Singh, Y. Kim, B. Lim, Y. Jeong, S. Hong

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Abstract

CNT/LiNi0.33Mn0.33Co0.33O2 nanocomposite electrode material was fabricated for Lithium Ion Battery. Sol-Gel synthesis has been used to synthesize the nano-sized pristine LiNi0.33Mn0.33Co0.33O2 (LNMC). CNT/LiNi0.33Mn0.33Co0.33O2 nanocomposite has been synthesized by using low temperature dispersion method. Structural characterization of the material has been performed by using X-ray diffraction, which shows the formation of single phase LiNi0.33Mn0.33Co0.33O2 with R-3m as space group. Morphological properties have been investigated by using characterization tool such as FESEM, which confirms the formation of composite material. Thermal properties have been characterized by DSC/TG measurements. Electrochemical performance of the material is under study. CNTs helped in increasing the cycle life of the material when cycled in the voltage range of 4.6-2.8V at a cycling rate of 0.2 mA/cm², however the impedance is found to be higher in case of the composite material compared to the pristine nano-sized LNMC.

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锂离子电池用CNT/LNMC纳米复合电极的合成与表征

制备了CNT/LiNi0.33Mn0.33Co0.33O2纳米复合锂离子电池电极材料。采用溶胶-凝胶法合成了纳米级原始LiNi0.33Mn0.33Co0.33O2 (LNMC)。采用低温分散法制备了CNT/LiNi0.33Mn0.33Co0.33O2纳米复合材料。利用x射线衍射对材料进行了结构表征，发现材料形成了以R-3m为空间基的单相LiNi0.33Mn0.33Co0.33O2。利用FESEM等表征工具研究了复合材料的形态特性，证实了复合材料的形成。热性能已通过DSC/TG测量表征。该材料的电化学性能正在研究中。当在4.6-2.8V电压范围内以0.2 mA/cm2的循环速率循环时，CNTs有助于提高材料的循环寿命，但与原始纳米级LNMC相比，复合材料的阻抗更高。

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10th IEEE International Conference on Nanotechnology

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