氮掺杂多孔碳纳米纤维的制备及其储钾性能  

Preparation of Nitrogen-Doped Porous Carbon Nanofiber and Its Potassium Storage Performance

作　　者：都玲玲 王雁 苏芸 王斌 刘洋[3] Du Lingling;Wang Yan;Su Yun;Wang Bin;Liu Yang(School of 3D Printing,Xinxiang University,Xinxiang 453000,China;School of Physics and Electronic Engineering,Xinxiang University,Xinxiang 453000,China;School of Information Science and Engineering,Yanshan University,Qinhuangdao 066044,China)

机构地区：[1]新乡学院3D打印学院,河南新乡453000 [2]新乡学院物理与电子工程学院,河南新乡453000 [3]燕山大学信息科学与工程学院,河北秦皇岛066044

出　　处：《微纳电子技术》2022年第1期93-98,共6页Micronanoelectronic Technology

基　　金：河南省教育厅科学基金资助项目(15A140032);河南省科技攻关计划资助项目(192102310467);河南省自然科学基金青年基金资助项目(202300410015)。

摘　　要：基于静电纺丝获得多孔碳纳米纤维,随后高温锻烧制备出氮掺杂多孔碳纳米纤维(N-CNF),并将其作为钾离子电池的负极材料。通过场发射扫描电子显微镜(FESEM)、透射电子显微镜(TEM)、X射线粉末衍射仪、Raman光谱仪和比表面积分析仪对目标产物进行了表征,研究了N-CNF负极材料的结构和形貌。N-CNF作为钾离子电池的负极材料,展现出了优异的电化学性能。在50和100 mA·g^(-1)的电流密度下,N-CNF负极材料分别循环200圈和400圈后比容量还能分别高达239和163 mA·h·g^(-1)。同时,N-CNF负极材料展现出了优异的倍率性能,其经500 mA·g^(-1)的大电流循环后电流密度恢复到25 mA·g^(-1)时,比容量仍然可以恢复到231 mA·h·g^(-1),随后达到256 mA·h·g^(-1)。所以,制备的N-CNF负极材料具有潜在的应用前景。The porous carbon nanofiber was obtained based on electrospinning,and then the nitrogen-doped porous carbon nanofibers(N-CNFs)were prepared by high-temperature calcination,and used as the anode material for potassium ion batteries.The target product was characterized by field emission scanning electron microscope(FESEM),transmission electron microscope(TEM),X-ray powder diffractometer,Raman spectroscope and specific surface area analyzer,and the structure and morphology of the N-CNFs anode materials were studied.As a anode material for potassium ion batteries,the N-CNFs exhibit excellent electrochemical performance.At current densities of 50 and 100 mA·g^(-1),the specific capacity of the N-CNFs anode materials can reach as high as 239 and 163 mA·h·g^(-1)after 200 and 400 cycles,respectively.Meanwhile,the N-CNFs anode materials also show excellent rate performance.When the specific current density restores to 25 mA·g^(-1)after a large current cycle of 500 mA·g^(-1),the specific capacity can still restore to 231 mA·h·g^(-1),and then reach 256 mA·h·g^(-1).Therefore,the prepared N-CNFs anode material has potential application prospects.

关 键 词：静电纺丝 纳米纤维 氮掺杂多孔碳 负极材料 钾离子电池 

分 类 号：TB383[一般工业技术—材料科学与工程] TM911[电气工程—电力电子与电力传动]