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采用NaOH一步炭化-活化聚偏二氯乙烯(PVDC)简便制备出高比表面积、层次孔结构炭材料。该炭材料具有发达的微孔-中孔-大孔的层次孔结构,其比表面达到2 815 m·2g-1。独特的微结构使其在无机和有机电解液中都表现出高的比电容和优异的大电流性能。其在6 mol·L-1KOH电解液中以0.05 A·g-1电流充放电测得的比电容高达376F·g-1,电流密度增大到50A·g-1比电容还保持215 F·g-1。在有机电解液1 mol·L-1Et4NBF4/AN中的比电容也达到170 F·g-1(电流密度0.05 A.g-1),电流密度增大到20A·g-1比容量还保持124F·g-1。
A one-step carbonization-activated poly (vinylidene chloride) (PVDC) was used to prepare carbon materials with high specific surface area and hierarchical pore structure. The carbon material has a developed pore structure of micropore-mesopore-macropore with a specific surface area of 2 815 m · 2g-1. The unique microstructure makes it show both high specific capacitance and excellent high current performance in both inorganic and organic electrolytes. Its specific capacitance was 376F · g-1 when it was charged and discharged at 0.05 A · g-1 in 6 mol·L-1 KOH electrolyte. The current density was also increased to 50A · g-1 while the capacitance was maintained at 215 F · g-1. The specific capacitance of 1 mol·L-1Et4NBF4 / AN in organic electrolyte also reached 170 F · g-1 (current density 0.05 Ag-1), and the current density increased to 20A · g-1. -1.