材料科学与工程学报2011，Vol.29Issue(2)：204-209,6.
针状焦和沥青焦用作锂离子电池负极材料的电极性能
Electrochemical Performance of Needle Coke and Pitch Coke Used as Anode Material for Li-ion Battery
摘要
Abstract
Graphitized cokes were prepared from needle coke and pitch coke to be used as anode material for Li-ion battery. Effect of the physical chemistry of the two cokes on the microstructure and electrochemical properties of their graphitized samples were investigated. The results indicate that needle coke was easier to be graphitized than pitch coke, because it was derived from purified mesophase pitch. When needle coke was graphitized at 2800℃, the values of d002, La, Lc were 0. 3373nm, 56.05nm, 27. llnm, respectively, while the La, Lc value of graphitized pitch coke was 53. 4％ of that of graphitized needle coke. The Li+ extraction capacitance of graphitized needle coke could maintain at 301mAh/g after it was charge/discharged for 40 cycles, while it was only 240mAh/g for graphitized pitch coke.关键词
针状焦/沥青焦/负极材料/锂离子电池Key words
needle coke/ pitch coke/ anode material/ lithium ion battery分类
化学化工引用本文复制引用
牛鹏星,王艳莉,詹亮,张秀云,刘春法,刘小军,凌立成..针状焦和沥青焦用作锂离子电池负极材料的电极性能[J].材料科学与工程学报,2011,29(2):204-209,6.基金项目
国家863重点资助项目(2008AA062302)、国家自然科学基金资助项目(20806024,50672025,5073003,51002051)和上海市国际合作资助项目(08160704000) （2008AA062302）
