球形石墨

球形石墨空腔电离室壁修正因子的Monte-Carlo模拟和实验测量

Monte-Carlo Calculation and Measurement of Wall Correction Factor for Spherical Graphite Ionization Chamber

10MW高温气冷堆为氦气冷却、石墨慢化的核反应堆，球形石墨燃料元件松散堆积在堆芯中。

MW high temperature gas cooled reactor ( HTR 10 ) is a helium cooled and graphite moderated nuclear reactor . Spherical graphite fuel elements are piled loosely in the core .

球形石墨微观结构的分形模型

A Fractal Model of the Microstructure

结果表明，球形石墨的背向散射谱及各阶分波中的共振频率均随孔隙率的增加向低频移动，其形态也发生变化。

The numerical results show that the backscattering spectra change remarkably and the resonance peaks in the scattered partial waves of each order move to lower values with increasing porosity .

用质量比为5∶5和7∶3的锰酸锂和包覆镍酸锂混合的复合材料作为正极，球形石墨作为负极，制成18650型锂离子电池并进行了安全性测试。

The 18650 type Li-ion batteries , using composite cathode of LiMn_2O_4 and coated-LiNiO_2 with the mass ratio of 5 ∶ 5 and 7 ∶ 3 , with graphite as anode electrode were assembled , safety tests were carried out .

在1C倍率下，50次循环后，球形鳞片石墨和GICs改性鳞片石墨的容量保持率分别为84.6%和99.4%。

After 50 cycles , the capacity retention rate of globular flake graphite and GICs modified flake graphite was 84.6 % and 99.4 % at 1 C , respectively .

改性球形微晶石墨用作锂离子电池负极材料的研究

Study on Modified Spherical Microcrystalline Graphite as Anode Materials for Li-ion Batteries

磷酚醛树脂包覆球形天然石墨作为锂离子电池负极材料

A Modified Natural Graphite Negative Materials of Lithium Ion Battery with Phosphorus-containing Phenol Resin

采用空气对球形天然石墨进行氧化改性，氧化后石墨的比表面积降低，降低球形天然石墨表面的缺陷，提高石墨结构的稳定性，使电化学性能得到提高。

The specific surface area and defects on the surface reduced , and the stability of graphite structure were improved , which were responsible for the improved electrochemical performance .

球形天然石墨材料具有良好的导电性，结晶度高，成本低，理论嵌锂容量高，充放电电位低且平坦，是目前作为锂离子电池负极材料重要部分。

Natural spherical graphite , is considered to be one of the most important anode materials because it is superior to other carbon candidates in terms of high conductivity , high crystallinity , low cost high theoretical lithium intercalating capacity , flat and low profile of charge and discharge potential .

C60分子以30eV初始动能入射到石墨表面时，将保持完好球形沉积在石墨表面；

At the impact energy of 30 eV , C_ ( 60 ) will deposit on the surface of the graphite and keep the sphere-like shape .

实验表明：从石墨向金刚石的转变，与石墨在催化剂&溶剂合金中的再结晶状态有关，类球形再结晶石墨是转变成金刚石小单元的基础。

One revealed that the transformation from graphite into diamond is related to spherical graphitic recrystallization in the catalyst-solvent alloy .