纳米石墨片/竹炭复合材料的制备、表征及其电化学性能研究  

Preparation,Characterization and Electrochemical Properties ofGraphite Nanosheets/Bamboo Charcoal Composites

作　　者：杨旋 赖建军 李洪锋 林冠烽[1,3] 黄彪[1] 郑新宇[2] YANG Xuan;LAI Jianjun;LI Hongfeng;LIN Guanfeng;HUANG Biao;ZHENG Xinyu(College of Material Engineering,Fujian Agriculture and Forestry University,Fuzhou 350002,China;College of Life Science,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Jinshan College,Fujian Agriculture and Forestry University,Fuzhou 350002,China)

机构地区：[1]福建农林大学材料工程学院,福建福州350002 [2]福建农林大学生命科学学院,福建福州350002 [3]福建农林大学金山学院,福建福州350002

出　　处：《林产化学与工业》2022年第4期54-60,共7页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目(31770611);广西林产化学与工程重点实验室开放课题(GXFK2007)。

摘　　要：以竹炭、鳞片石墨为原料,基于机械力效应,通过高能球磨的剥离和粉碎,然后高温炭化,制备出具有优良电化学性能的纳米石墨片/竹炭(GN/BC)复合材料;同时在相同条件下,以不添加鳞片石墨制备的高温多孔竹炭(PBC)为对照样品。利用X射线衍射(XRD)、拉曼光谱(Raman)、扫描电子显微镜(SEM)、比表面积与孔隙分布分析仪表征了材料的表面形貌和结构,并利用三电极体系测试了其电化学性能。研究结果表明:较高结晶度鳞片石墨的加入可以提高复合材料的结晶度,高能球磨可以使石墨片破碎成纳米尺寸,并嵌入竹炭内部;制备的GN/BC复合材料的比表面积为863.47 m~2/g,总孔容为0.56 cm~3/g、微孔孔容为0.26 cm~3/g,平均孔径为2.58 nm;在1 A/g的电流密度下,该复合材料具有280.97 F/g的高质量比电容,同时还具有良好的倍率性能。Based on mechanical force effect,graphite nanosheets/bamboo charcoal(GN/BC)composites with excellent electrochemical performance were prepared by high⁃energy ball milling and pulverization,and high⁃temperature carbonization using bamboo charcoal and flake graphite as raw materials.Meanwhile,the high⁃temperature porous bamboo charcoal(PBC)prepared without flake graphite was used as the control sample under the same conditions.The surface morphology and structure of the material were characterized by X⁃ray diffraction(XRD),Raman spectroscopy(Raman),scanning electron microscope(SEM)and specific surface area and pore distribution analyzer.The electrochemical performance of the product was tested by a three⁃electrode system.The results showed that the addition of flake graphite with higher crystallinity could improve the crystallinity of the composites.High⁃energy ball milling could break the graphite flakes into nanostructures and embed them in the bamboo charcoal.The specific surface area of the prepared GN/BC was 863.47 m2/g,the total pore volume was 0.56 cm3/g,the micropore volume was 0.26 cm3/g,and the average pore diameter was 2.58 nm.At a current density of 1A/g,the composite material had a high specific capacitance of 280.97 F/g and good rate performance.

关 键 词：机械力效应 竹炭 磷片石墨 电化学 

分 类 号：TQ35[化学工程] TQ424