配位-热解法合成纳米级多孔石墨化碳材料及其电容特性  

Nanoscale porous graphite carbons prepared by coordination-pyrolysis method and their capacitive properties

作　　者：孙立[1] 宋伟明[1] 江艳[1] 陈文龙[1] 李颖[1] 冯建[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,黑龙江齐齐哈尔161006

出　　处：《功能材料》2016年第6期241-246,共6页Journal of Functional Materials

基　　金：国家自然科学基金青年基金资助项目(21501104);黑龙江省自然科学基金面上资助项目(B2010010;B2015014);黑龙江省教育厅面上资助项目(12511595);齐齐哈尔大学青年教师科研启动支持计划资助项目(2014k-Z06)

摘　　要：为得到高电容特性的超级电容器电极材料,以廉价的可溶性淀粉为碳源采用配位-热解法制备了纳米级多孔石墨化碳电极材料。分别利用透射电镜(TEM)、X射线衍射(XRD)、拉曼光谱(Raman)和N2吸附-脱附(BET)等测试手段对材料的微观结构进行表征,结果表明,合成材料具有较大的比表面积(1 187m2/g)和高的石墨化程度。并对合成材料进行了电化学性能测试,测试结果说明,该材料展示了优异的电容特性,在1A/g时,其电容高达249F/g,5 000次循环后,其比电容仍为初始电容的99.97%。当以此材料为电极组装成电容器器件时,在功率密度为10 500 W/kg下其能量密度仍为46.79 Wh/kg。因此,这种方法制备的纳米级多孔石墨化碳是一种有潜力的超电材料。To obtain excellent electrode material with high capacitive property, the nanoscale porous graphite carbon was prepared via a sample coordination-pyrolysis method from renewable biomass starch. The nanostructure of the PGC-based materials were characterized by XRD, Raman, TEM and BET methods. The result exhibits that PGC has high BET surface area （SBET = 1 187 m^2/g） and superior graphitization. While being adopted as a supereapacitor electrode, PGC shows excellent electrochemical performance： a high specific capacitance of 249 F/g, outstanding cycle durability over 99.97% after 5 000 cyles, an high energy density of 46.79 Wh/kg at a high power density of 10 500 W/kg. Thus, the synthesized PGC material was very promising as an electrode material for high-power supercapacitors.

关 键 词：配位-热解法 多孔结构 石墨化碳 电容特性 

分 类 号：TB321[一般工业技术—材料科学与工程] O64[理学—物理化学]