人工晶体学报2018，Vol.47Issue(2)：457-462,6.
钠离子电池负极材料二氧化钛的氮离子掺杂改性研究
Nitrogen-Doped TiO2Nanofibers as Anode Materials for Sodium-Ion Batteries
摘要
Abstract
Anatase TiO2shows excellent long-term cycling stability as an anode for sodium-ion batteries. However, the low electrical conductivity limited its large-scale application.The carbon and anatase titanium dioxide nanoparticles(TiO2)complex was prepared by the method of electrospun,then combine nitrogen doping and prepared the samples of TiO 2, N-TiO2, which as self-standing anode materials for Na-ion battery.The effects of N3-doping on the structure and electrochemical performance of the anatase TiO2were studied by XRD,XPS,SEM and galvanostatic charge-dischargeand,respectively.The results show that the sample N-TiO2has better ratio of performance than that of TiO 2.Under 10 A· g -1current density,the reversible capacity of TiO 2and N-TiO2were 134.3 mAh· g -1and 212.1 mAh· g -1.Under the long-term cycles of 1 A· g -1, the reversible capacity of N-TiO2was 192.4 mAh· g-1, and the discharge specific capacity was still as high as 195.5 mAh· g-1even after 1000 cycles, significantly higher than the discharge specific capacity of TiO 2samples.The results show that after the nitrogen doped,the formation of Ti3+and oxygen vacancy effectively improve the electrical conductivity and the diffusion efficiency of Na +in material,so the electrochemical performance was improved obviously.关键词
钠离子电池/N掺杂/静电纺丝/TiO2/电化学性能Key words
Na-ion bettery/N doping/electrospun/TiO2/electrochemical performance分类
数理科学引用本文复制引用
刘玲,何玉林..钠离子电池负极材料二氧化钛的氮离子掺杂改性研究[J].人工晶体学报,2018,47(2):457-462,6.基金项目
淮安市科技局项目(HAS2015023) （HAS2015023）
