中间相沥青碳微球的制备及其嵌锂行为的研究注意:本论文已在《宇航工艺材料 》2001,6:27-29发表 摘要:以含0.46%~3.7%(质量分数)吡啶不溶物(H)的宝钢煤焦油为原料,在450℃下自升压热缩聚制备中间相碳~ (MCMB),然后将其在700~C下进行碳化。应用SEM、恒电流充放电等技术研究了所得MCMB的表面物理形态及充放电性能。研究发现:随原料中一次H含量的增加,MCMB的球径逐渐减小;首次电容量从326 n ·h·g 增至425 m_4·h-g~,首次不可逆容量先增加而后减小,而首次亢放电效率先减小而后增加。 Preparation of Mesocarbon Microbeads and Its Performance of Lithium Insertion Li Baohua Lv Yonggen Li Kaixi Lv Chunxiang Ling Licheng Abstract:Coal tars with different pyridine insoluble(PI)content(0.46-3.7wt%)were used as raw materials to
prepare mesocarbon microbeads(MCMB) at 450℃for 2 h under autoginous pressure.MCMB were then heat-treated at
700℃ for 1 h.Surface morphology of the MCMB was investigated by SEM and constant-current charge-discharge properties were studied.It was found that,with the primary PI content increasing,the diameters of MCMB decreased, the first
discharge capacity increased from 326 mA. h.g-1 to 425 mA.h. g-1 and the first coulombic efficiencies decreased at the beginning and then increased. 1、浏览PDF格式全文需要使用软件--Abode Acrobat(由于软件较大并常见,我站不提供下载) 2、下载论文全文请点击鼠标右键“另存为”或使用断点续传软件下载(129KB) 本站收录的本文作者的其他论文: 1、Preparation of Porous Carbon Microspheres 2、Preparation of mesocarbon microbeads from coal tar
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