CAJ | 학술논문

以SnO2和葡萄糖为原料,采用一种简单的低温水热法制备了SnO2/C复合材料.采用SEM, TEM, XRD, TG和电化学测试系统对SnO2/C复合材料进行研究,研究结果表明:样品由亚微米大小球形颗粒组成,碳含量大约1.5 wt%.作为锂离子电池负极材料,SnO2/C复合材料展现了高达52.7%的起始库仑效率和753.4 mAh/g的可逆容量,而没有碳复合的SnO2材料仅显示了39.8%的起始库仑效率和548 mAh/g的可逆容量.SnO2/C复合材料也展现了良好的循环性能和稳定的高倍率性能.这表明水热法低温引入碳是SnO2/C复合材料具有良好电化学性能的重要影响因素.
이SnO2화포도당위원료,채용일충간단적저온수열법제비료SnO2/C복합재료.채용SEM, TEM, XRD, TG화전화학측시계통대SnO2/C복합재료진행연구,연구결과표명:양품유아미미대소구형과립조성,탄함량대약1.5 wt%.작위리리자전지부겁재료,SnO2/C복합재료전현료고체52.7%적기시고륜효솔화753.4 mAh/g적가역용량,이몰유탄복합적SnO2재료부현시료39.8%적기시고륜효솔화548 mAh/g적가역용량.SnO2/C복합재료야전현료량호적순배성능화은정적고배솔성능.저표명수열법저온인입탄시SnO2/C복합재료구유량호전화학성능적중요영향인소.
The SnO2/C composite was prepared by a facile low temperature hydrothermal procedure using SnO2 and glucose as raw materials. The pepared SnO/C composite were characterized by SEM, TEM, XRD, TG and electrochemical test system. The results showed that the composite is made up of spherical particles with the diameter of submicron size. The carbon content in the composite is about 1.5 wt%. As the anode active material for Li-ion batteries, the composite show an initial coulombic efficiency up to 52.7% and an initial reversible capacity as high as 753.4 mAh/g, while the bare SnO2 anode only show an initial coulombic efficiency of 39.8% and an initial reversible capacity of 548 mAh/g. The composite also exhibit an improved cycle durability and a stable high rate property. The improved electrochemical performance of the composite could be ascribed to the effect of the introduced-carbon which obtain by a low temperature hydrothermal reaction.