CAJ | 학술논문

针对目前清洁能源领域电动车锂电池负极材料所用天然石墨微粉球形化程度高、振实密度大的要求，本实验通过控制机械磨得到不同粒径分布的球形化石墨微粉，并研究天然石墨微粉的粒度组成对振实密度的影响。结果表明：⑴经整形后，鳞片石墨微粉长径比变小，球形度系数有了很大提高，各向异性的影响减小；⑵合理的粒度分布（大小有序结合），小颗粒能紧密堆积在大颗粒缝隙间，石墨微粉松装密度达到0.625 g/cm3，振实密度达到1.111 g/cm3；⑶石墨粒径分布为D10=10.92μm，D50=18.45μm，D90=25.78μm，满足电动车锂电池负极材料用。
침대목전청길능원영역전동차리전지부겁재료소용천연석묵미분구형화정도고、진실밀도대적요구，본실험통과공제궤계마득도불동립경분포적구형화석묵미분，병연구천연석묵미분적립도조성대진실밀도적영향。결과표명：⑴경정형후，린편석묵미분장경비변소，구형도계수유료흔대제고，각향이성적영향감소；⑵합리적립도분포（대소유서결합），소과립능긴밀퇴적재대과립봉극간，석묵미분송장밀도체도0.625 g/cm3，진실밀도체도1.111 g/cm3；⑶석묵립경분포위D10=10.92μm，D50=18.45μm，D90=25.78μm，만족전동차리전지부겁재료용。
The lithium-ion battery of electric bicycle demands the natural graphite with good particle shape and high tap bulk density in the ifelds of clean energy. The mechanical mill was used to control the graphite particle with good particle shape and different particle size distribution. Meanwhile, the effect of particle size composition of natural graphite on tap bulk density was studied. The experimental results show:⑴The ratio of length/diameter of natural lfake-like graphite becomes less, and sphericity factor becomes bigger after formation. The inlfuence of lfake-like graphite aeolotropism descends a lot.⑵The rational particle size distribution of graphite is obtained;the smaller particles are piled up and stick around the bigger particles. The apparent density of graphite is 0.625 g/cm3, and tap bulk density of graphite is 1.111 g/cm3.⑶The particle size distribution of graphite is D10=10.92 μm, D50=18.45 μm, D90=25.78 μm, meeting the application in lithium-ion battery of electric bicycle.