摘要
天然石墨(NG)分别掺入碳纳米管(CNT)和纳米炭粉(CNP),得到两种纳米炭与石墨碳的混合材料.通过比较NG、CWI、CNP及其混合材料分别作为锂离子电池负极时的电化学性能,发现碳纳米管的首次不可逆容量损失很大,它的混合材料也不适合作锂离子电池的负极材料;纳米炭粉与石墨有很好的协同效应,该混合材料具有良好的电化学性能,相同条件下与天然石墨相比,其充放电比容量分别提高9.8％和9.4％.
The composite materials of natural graphite (NG) and nano-scaled carbon were obtained by doping with carbon nanotube (CNT) and carbon nanopowder (CNP) respectively. The Electrochemical performance of NG, CNT, CNP and their composite materials were investigated as the anode materials of lithium ion batteries. The study shows carbon nanotube has large irreversible capacity loss and its composite material is not suitable to anode for lithium ion batteries. There are good cooperation effect between CNP and NG, their composite material shows very good electrochemical performance, compared with NG, its charge and discharge specific capacities increase by 9.8% and 9.4%, respectively.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2004年第5期1111-1117,共7页
Journal of Inorganic Materials
基金
科技型中小企业技术创新基金(00C26222200964)
关键词
锂离子电池
天然石墨
混合材料
电化学性能
lithium ion battery
natural graphite
composite material
electrochemical performance
