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A Study on the Electrochemical Characteristics of Kerosene Derived Carbon Nanospheres As Anode Materials of Lithium Secondary Batteries

机译:煤油衍生碳纳米球电化学特性作为锂二次电池阳极材料的研究

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In this study, carbon nanospheres (CNSs) were synthesized by the nebulyzed assisted pyrolysis process using kerosene as carbon precursors, ferrocene catalyst and activated carbon support at elevated temperature under an nitrogen atmosphere. Morphology and structure of as grown CNSs were characterized by Scanning Electron Microscope (SEM), High-Resolution Transmission Electron Microscope (HRTEM) and Raman spectroscopy. It was found that the carbon products had a turbostratic structures and high degree of disorder carbon structures. Preliminary electrochemical measurements of kerosene derived CNSs as anode materials of lithium secondary batteries were carried out using charge -discharge tests. Experimental results showed that a stable cycle performances until the 100th cycles was obtained with specific capacity of 200 mAh/g. However, the main problem is the high irreversible capacity at the first cycle due to the low purity and non uniform carbon nano-spheres.
机译:在该研究中,通过在氮气氛下在升高的温度下,通过煤油作为碳前体,二茂铁催化剂和活性炭载体在氮气氛下在升高的温度下合成碳纳米球(CNSS)。通过扫描电子显微镜(SEM),高分辨率透射电子显微镜(HRTEM)和拉曼光谱,表征了种类的形态和结构。发现碳产品具有涡轮静脉结构和高度的紊乱碳结构。煤油衍生CNSS的初步电化学测量作为锂二次电池的阳极材料使用电荷 - 溶解试验进行。实验结果表明,稳定的循环性能,直到获得100次循环,特定容量为200mAh / g。然而,主要问题是由于低纯度和非均匀的碳纳米球引起的第一周期的高不可逆容量。

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