单颗粒人造石墨负极材料的制备及储锂性能研究

Preparation and lithium storage properties of single particle artificial graphite anode materials

随着低碳经济的快速推进,人造石墨技术得到飞速的发展。国内外学者对人造石墨的包覆、石墨化、电化学及储锂机理进行了大量的研究,取得了丰硕的成果,但对粒度大小对电化学及储锂特性的影响研究较少。针对这一问题,从表面形貌、粒度分布、首次库伦效率和充放电比容量、循环测试几个方面,对单颗粒人造石墨的颗粒大小对储能特性的影响进行研究,所得研究成果具有一定的理论和实践价值。

With the rapid advancement of low-carbon economy, artificial graphite preparation technology has developed rapidly.In this regard, domestic and foreign scholars have done a lot of research on the coating, graphitization, electrochemistry, and lithium storage mechanism of artificial graphite, and achieved fruitful results.But there are few studies on the effect of particle size on electrochemistry and lithium storage characteristics.In response to this problem, the effect of the particle size of single-particle artificial graphite on the energy storage characteristics was studied from the aspects of surface morphology, particle size distribution, first coulombic efficiency, charge-discharge specific capacity, and cycle test.The research results obtained have certain theoretical and practical values.