氮掺杂多孔晶态碳的合成及其电容特性的应用  

Synthesis and Capacitive Application of Nitrogen-doped Porous Graphitized Carbon

作　　者：孙立[1] 宋伟明[1] 阮曦金 杨欣[1] 李颖[1] 冯建[1] 徐立洋[1] 邓启刚[1] 

机构地区：[1]齐齐哈尔大学化学与化学工程学院,齐齐哈尔161006

出　　处：《人工晶体学报》2016年第3期686-691,共6页Journal of Synthetic Crystals

基　　金：国家自然科学基金青年项目(21501104);黑龙江省自然科学基金面上项目(B2015014);黑龙江省教育厅面上项目(12511595);齐齐哈尔大学青年教师科研启动支持计划项目(2014K-Z06)

摘　　要：采用水热-活化法以葡萄糖为碳源、尿素为氮源合成出高含氮量的多孔晶态碳材料。采用透射电镜、X射线衍射、N2吸附-脱附和X射线光电子能谱对材料的结构进行表征;利用循环伏安、恒流充放电和电化学阻抗对材料进行电容性能的测试。结果表明:合成材料具有强的结晶性、大的比表面积(1567 m2/g)、和高的氮含量(7.97at%)。当其做为电极材料应用于超级电容器中时,其展示出良好电化学性能,在1 A/g时,其比电容为258 F/g,要远高于含氮的活性碳(222 F/g)和晶态碳(106 F/g)的电容;5000次循环后,其比电容保持率为99.98%;在功率密度为500W/kg下其能量密度为10.69 Wh/kg。The nitrogen-doped graphite carbon( NGC) was fabricated by hydrothermal-activation route.Herein,glucose and urea were selected as carbon and nitrogen resource. The structure of NGC-based materials were determined via TEM,XRD,XPS and BET methods. The capacitve properties of the NGCbased materials were measured by CV,GCD and EIS. The results indicate that NGC has strong graphitic degree,large surface area( 1567 m2/ g) and high nitrogen level( 7. 97at%). When being assembled as an electrode for supercapactior, the NGC exhibited excellent capacitive properties: a high specific capacitance of 256 F / g at 1 A / g,which is much high than that of nitrogen-doped active carbon( 222 F /g) and graphite carbon( 106 F / g),the capacitan ceretention over 99. 98% after 5000 cyles and a high energy density of 10. 69 Wh / kg at a high power density of 500 W / kg。

关 键 词：氮掺杂 多孔 晶态碳 电容特性 

分 类 号：O613.71[理学—无机化学]