硅与氮化钛纳米复合材料作为锂离子电池负极的吸放锂性能研究

doi:10.3321/j.issn:1002-185x.2007.10.041

CORC > 北京大学 > 化学与分子工程学院

	硅与氮化钛纳米复合材料作为锂离子电池负极的吸放锂性能研究; Study on lithiation/delithiation properties of Si-TiN composited nanoparticles as anode materials for lithium-ion batteries
	王忠 ; 田文怀 ; 李星国
刊名	稀有金属材料与工程
	2007
关键词	纳米材料硅合金锂离子电池负极材料 nanomaterials Si alloys lithium ion batteries anode electrode
DOI	10.3321/j.issn:1002-185x.2007.10.041
英文摘要	采用直流电弧等离子体方法合成了硅与氮化钛纳米复合材料,利用XRD,TEM等手段研究了其微观结构。结果显示,得到的纳米颗粒由Si和TiN以及部分Cu0.1Si1.9Ti组成,其形状为球形,颗粒尺寸大多分布在10～50nm之间。用恒流充放电的方法研究了其作为锂离子电池负极的电化学行为,在锂的嵌入硅镍纳米颗粒的过程中,Si充当活性中心,而其中的TiN和Cu0.1Si1.9Ti作为惰性成分,不与Li反应,充当缓冲基体及导电剂的作用。当电流密度为150mA·g-1时,电极的循环稳定性最好,首次可逆容量为737mAh·g-1,20次循环后容量仍为542mAh·g-1。在0.05～0.8V的电位区间的循环稳...; Si-TiN composited nanoparticles were prepared by hydrogen plasma reaction. The morphology and crystal structure of the nanoparticles were investigated by TEM and XRD. The nanoparticles consists of Si and TiN as well as partial Cu0.1Si1.9Ti. During lithium insertion into the alloy electrodes, Si acts as active centre, while the TiN and Cu0.1Si1.9Ti in the material plays the role of matrix as an inertia phase, which can buffer silicon volume expansion and raise electric conductivity among silicon particles. A high lithium storage capacity of 737 mAh center dot g(-1) was observed for the composite nanoparticles, and specific capacity is 542 mAh center dot g(-1) at the 20th cycle. The cycle stability of the potential in the range of 0.05 similar to 0.80 V shows the best.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000250961500041&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); EI; 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 1; 10; 1874-1877; 36
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/226958]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	王忠,田文怀,李星国. 硅与氮化钛纳米复合材料作为锂离子电池负极的吸放锂性能研究, Study on lithiation/delithiation properties of Si-TiN composited nanoparticles as anode materials for lithium-ion batteries[J]. 稀有金属材料与工程,2007.
APA	王忠,田文怀,&李星国.(2007).硅与氮化钛纳米复合材料作为锂离子电池负极的吸放锂性能研究.稀有金属材料与工程.
MLA	王忠,et al."硅与氮化钛纳米复合材料作为锂离子电池负极的吸放锂性能研究".稀有金属材料与工程 (2007).