ZnSe/CoSe/SnO掺杂多孔碳纳米管的制备及其储锂性能的研究

Preparation of ZnSe/CoSe/SnO doped porous carbon nanotubes for lithium storage

以静电纺丝技术构筑的SnO_(2)纳米管为模板,在其表面制备金属有机框架层,并进一步通过硒化反应制备了ZnSe/CoSe/SnO纳米颗粒嵌入的N掺杂多孔碳纳米管(ZCS@NCNTs)。结果表明,以ZCS@NCNTs作为锂离子电池负极材料时展现出独特的结构和组分优势,显示出高倍率性能以及优异的循环稳定性,在电流密度为0.1 A/g时循环100圈的比容量为1 621.6 mAh/g;在5 A/g下循环2000圈后仍能提供426.2 mAh/g的可逆容量。

Metal-organic frameworks(MOFs)layer is prepared on the surface of SnO_(2) nanotubes constructed by the electrospinning technology,and further prepared into nitrogen-doped porous carbon nanotubes embedded with ZnSe/CoSe/SnO nanoparticles(ZCS@NCNTs)through selenization reaction.ZCS@NCNTs,as anode materials of lithium ion battery,exhibits unique structural and component advantages,showing high rate performance and excellent cycling stability.Its specific capacity is 1621.6 mAh·g^(-1)after 100 cycles at a current density of 0.1 A·g^(-1),and its reversible capacity remains 426.2 mAh·g^(-1)after 2000 cycles at 5 A·g^(-1).