新型氮掺杂多孔碳/S正极的制备及其储锂性能-《电镀与精饰》

文章信息/Info

Title:: Preparation and lithium storage performance of novel nitrogen-doped porous carbon/S cathode

作者:: 王亚清¹; 苏芸^1*; 李娜¹; 都玲玲²; 王斌¹; (1.新乡学院物理与电子工程学院,河南新乡 453000 2. 新乡学院 3D 打印学院,河南新乡 453000)

Author(s):: Wang Yaqing1; Su Yun1*; Li Na1; Du Lingling 2; Wang Bing1; (1. School of Physics and Electronic Engineering, Xinxiang University, Xinxiang 453000, China 2. School of 3D Printing, Xinxiang University, Xinxiang 453000, China)

Keywords:: polymer porous materials nitrogen doping lithium-sulfur batteries

摘要:: 氮掺杂多孔碳（N—C）作为锂硫电池硫载体材料具有巨大潜力，它们可以限制多硫化物的穿梭效应和溶解。在此，通过高温退火成功制备了源自一种三聚氰胺基有机聚合物（SNW-1）的N—C网络，并作为硫的载体材料成功制备出了N—C /S。采用X射线衍射仪（XRD）、拉曼光谱仪（Raman）、红外光谱仪（FTIR）、扫描电镜（SEM）、透射电镜（TEM）、热重分析仪（TGA）表征了N—C /S的形貌和结构。NC/S正极材料表现出优异的循环性能（在334.4 mA/g下500圈循环后为709 mAh/g，每圈循环衰减为0.09%）和优异的倍率性能（在167.2、334.4、836、1 672、3 344和8 360 mA/g电流密度下分别对应放电比容量为1 102、958、808、721、536和428 mAh/g）。

Abstract:: Because nitrogen-doped porous carbon (N—C) may limit the shuttling effect and polysulfide dissolution, they hold great promise as sulphur carrier materials for lithium-sulfur batteries. In this work, N—C networks produced from a melamine-based organic polymer (SNW-1) were successfully created by high-temperature annealing, and N—C/S was successfully prepared as a sulphur carrier material. The shape and structure of N—C/S were characterised using X-ray diffractometer(XRD), Raman spectrometer(Raman), infrared spectrometer(FTIR), scanning electron microscope (SEM), transmission electron microscope(TEM), and thermogravimetric analyze (TGA). The N C/S cathode material shows good rate performance (discharge specific capacities of 1 102, 958, 808, 721, 536, and 428 mAh/g at current densities of 167.2, 334.4, 836, 1672, 3344, and 8 360 mA/g, respectively) and excellent cycling performance (709 mAh/g after 500 cycles at 334.4 mA/g, with a decay of 0.09% per cycle)