摘要
以石墨烯为导电基底,通过调控多巴胺的添加顺序,成功地制备了氮掺杂石墨烯负载Fe_(2)O_(3)复合材料。扫描电镜和透射电镜表征结果表明,平均尺寸约为20 nm的Fe_(2)O_(3)均匀分布在氮掺杂石墨烯片表面。所制备的氮掺杂石墨烯负载Fe_(2)O_(3)复合材料展现了良好的锂离子存储性能,在0.1 A/g的电流密度下首次放电容量可以达到1434 mA·h/g,并在2 A/g下循环480次依然保持初始容量的78%。
Fe_(2)O_(3)/nitrogen-doped graphene is produced through regulating the addition order of dopamine,with nitrogen-doped graphene as conductive substrate and dopamine as nitrogen source.It is verified through characterization by scanning and transmission electron microscopy that Fe_(2)O_(3)nanoparticles with a size of around 20 nm are dispersed homogeneously on the surface of nitrogen-doped graphene.The prepared Fe_(2)O_(3)/nitrogen-doped graphene exhibits superior performance in Li storage with an initial discharge capacity reaching 1,434 mAh·g^(-1)at a current density of 0.1 A·g^(-1),and shows a good cycling property with 78%capacity remained over 480 cycles at a current density of 2 A·g^(-1).
作者
米盼盼
郭明钢
代岩
张旭
MI Pan-pan;GUO Ming-gang;DAI Yan;ZHANG Xu(Liaoning Key Laboratory of Chemical Additive Synthesis and Separation,Panjin Industrial Technology Institute,Dalian University of Technology,Panjin 124221,China;Dalian University of Technology,Panjin 124221,China)
出处
《现代化工》
CAS
CSCD
北大核心
2021年第11期138-142,147,共6页
Modern Chemical Industry
基金
辽宁省化学助剂合成与分离省重点实验室开放课题基金资助项目(ZJKF2010)。
