【作者】 周丹； 曲凤玉；

【Author】 Dan Zhou;Fengyu Qu;College of Chemistry and Chemical Engineering,Harbin Normal University;

【机构】 哈尔滨师范大学,化学化工学院；

【摘要】 以酚醛树脂作为碳源,嵌段共聚物P123和正硅酸乙酯为造孔剂,用静电纺丝和软膜板的方法合成了具有介孔和微孔结构的多孔碳纤维材料。多孔碳纤维材料具有相同的丝的结构,直径大约为700纳米,丝的长度为几十微米。此外,多孔碳纤维材料的比表面积为2092 m2g–1和较大的孔体积。它独特的结构使在6.0M氢氧化钾为电解液和0.5 Ag–1电流密度时,比电容为252 Fg–1。在2000圈后,它的循环稳定性保持为99%。更多还原

【Abstract】 Porous carbon nanofibers(PCNFs) were synthesized via electorspinning method using phenol-formaldehyde resin as carbon precursor with tetraethyl orthosilicate and triblock copolymer Pluronic P123 as porous and soft templates, respectively. The prepared sample shows a uniform nanofiber structure with ~700 nm in diameter and dozens of microns in length. Additionally, PCNFs possess an ultrahigh specific surface area(2092 m2 g–1) and high pore volume. The electrochemical performance of the prepared PCNFs material was investigated in 6.0 M KOH electrolyte. The PCNF electrode exhibits a high specific capacitance(252 F g–1 at 0.5 A g–1) and superior cycling stability(99% retention after 2000 cycles) mainly due to its unique structure.更多还原