天津工业大学学报2017，Vol.36Issue(4)：48-52,5.DOI:10.3969/j.issn.1671-024x.2017.04.010
掺氮木质素基碳微球用作钠离子电池负极材料
N-doped lignin-based carbon microspheres as anodes for sodium-ion batteries
摘要
Abstract
In order to improve the first Coulombic efficiency and specific capacity of the carbon materials for the anode electrode of sodium-ion battery, the nitrogen-doped lignin-based carbon microspheres (NLC) were prepared by a simple spray drying method with melamine as nitrogen source. The structure of carbon microspheres were characterized by TEM and XPS, and its electrochemical performance was tested. The results showed that lignin-based carbon microspheres are typical hard carbon structures. The nitrogen was successfully doped into the carbon material. The reversible specific capacity of lignin-based carbon microspheres was 123 mAh/g with an initial Coulombic efficiency of 36.28%at a constant current density of 20 mA/g. The reversible specific capacity of nitrogen-doped lignin-based carbon microspheres was 205 mAh/g with an initial Coulombic efficiency of 51%. The comparison found that doping nitrogen can introduce defects and improve the electrical Conductivity of carbon materials, the nitrogen-doped not only increases the capacity of sodium-ion battery but also greatly improves the initial coulombic efficiency.关键词
钠离子电池/木质素/碳微球/掺氮/负极材料Key words
sodium-ion batteries/lignin/carbon microspheres/nitrogen-doped/anode material分类
化学化工引用本文复制引用
时志强,杨春媛,王静,张进..掺氮木质素基碳微球用作钠离子电池负极材料[J].天津工业大学学报,2017,36(4):48-52,5.基金项目
国家自然科学基金资助项目(51603147) （51603147）
天津市自然科学基金资助项目(14RCHZGX00859,14JCQNJC07200,15ZCZDGX00270) （14RCHZGX00859,14JCQNJC07200,15ZCZDGX00270）
