蔬菜藤蔓衍生制备高性能锂离子电池硬碳负极材料  

Preparation of Hard Carbon as High-performance Anode Materials for Lithium-ion Batteries Derived from Vegetable Vines

作　　者：孙晓丽[1] 袁金秀[1] 张姗姗[1] 于会华 刘伟伟[1,3] 李成杰 SUN Xiaoli;YUAN Jinxiu;ZHANG Shanshan;YU Huihua;LIU Weiwei;LI Chengjie(Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization,Weifang University of Science and Technology,Weifang 262700,Shandong,China;Weihai Quality Inspection Center for Medical Devices,Weihai 264200,Shandong,China;School of Science,Kaili University,Kaili 556011,Guizhou,China)

机构地区：[1]潍坊科技学院山东半岛卤水资源高值化绿色化综合利用工程技术研发中心,山东潍坊262700 [2]威海市医疗器械产品质量检验中心,山东威海264200 [3]凯里学院理学院,贵州凯里556011

出　　处：《济南大学学报（自然科学版）》2021年第3期290-296,共7页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金项目(51562017);山东省高等学校科研创新平台项目(2018LS001,2018YY027);潍坊市科技发展计划项目(2018GX063)。

摘　　要：以葫芦科丝瓜藤蔓为前驱体,通过高温热解碳化制备具有多级孔结构的硬碳材料;采用扫描电子显微镜、X射线衍射、透射电子显微镜和氮气吸附-脱附等方法,对制备的硬碳材料进行形貌和结构分析;采用循环伏安和恒流充放电等测试方法,对制备的硬碳材料的储锂电化学性能进行分析。结果表明:丝瓜藤蔓衍生的硬碳材料富含微孔、介孔多级孔结构,在一定程度上保留了丝瓜藤蔓的生物学结构特性,促进了锂离子在石墨层间及活性位点的脱嵌-吸脱附动力学;与商业化硬碳石墨材料相比,所制备硬碳材料的比容量、倍率、循环性能具有明显的优势。Luffa cylindrica vines were used as the precursor to prepare hard carbon materials with multistage pore structure via high-temperature pyrolysis and carbonization.Methods of scanning electron microscopy,X-ray diffraction,transmission electron microscopy,and nitrogen adsorption-desorption were used to analyze the morphology and structure of the prepared hard carbon materials.The cyclic volt-ammetry and galvanostatic discharge-charge tests were carried out to analyze the lithium storage electrochemical performance of the prepared hard carbon matierials.The results show that the hard carbon materials derived from the Luffa cylindrica vines are rich in micropores and mesoporous with multistage pore structure,which retain biological structural characteristics of Luffa cylindrica vines to a certain extent,and promote the intercalation-deintercalation of lithium ions between graphite layers,as well as the kinetic behavior of adsorption-desorption on active sites.Compared with the commercial hard carbon materials,the prepared hard carbon materials show higher specific capacity,more excellent rate and cycle performance.

关 键 词：锂离子电池 硬碳材料 热分解 负极材料 生物质 

分 类 号：TM912[电气工程—电力电子与电力传动] O613.71[理学—无机化学]