以煤焦油沥青为原料,采用“中间相调制-化学活化”工艺制备了超级电容器用活性碳电极材料,考察了中间相调制温度对活性碳晶体结构、孔径分布、电容量特性的影响,并分析了中间相沥青的调制过程及不同实验条件对活性碳晶体结构、孔径分布、电容量特性的影响.结果表明,中间相沥青调制温度主要集中在190～492.5℃,随中间相调制温度升高,活性碳电极材料的振实密度明显增大,在500℃条件下制备的活性碳材料具有最高的比电容量,达到103F/g,较高的调制温度能提升活性碳中碳的边缘层含量,从而提高材料的面积比电容量.
参考文献
| [1] | Burke A .Ultracapacitors:Why,how,and where is the technology[J].Journal of Power Sources,2000,91(01):37. |
| [2] | 熊奇,唐冬汉.超级电容器在混合电动车上的研究进展[J].中山大学学报(自然科学版),2003(z1):130-133. |
| [3] | Kotz R et al.Principle and application of electrochemical capacitors[J].Electrochimica Acta,2000,54(02):2483. |
| [4] | Celzard A;Collas F;Mar(e)ché J F et al.Porous electrodesbased double-layer supercapacitors:Pore structure versus series resistance[J].Journal of Power Sources,2002,108(1-2):153. |
| [5] | Liang Yanyu;Cao Lin .Synthesis of Co(OH)2/USY composite and its application for electrochemical supercapacitors[J].Journal of Power Sources,2004,136(01):197. |
| [6] | Hualan Wang;Qingli Hao;Xujie Yang;Lude Lu;Xin Wang .Graphene oxide doped polyaniline for supercapacitors[J].Electrochemistry communications,2009(6):1158-1161. |
| [7] | Jong H. Jang;Seung M. Oh .Complex Capacitance Analysis of Porous Carbon Electrodes for Electric Double-Layer Capacitors[J].Journal of the Electrochemical Society,2004(4):A571-A577. |
| [8] | Calo J M;Hall P J .The application of small angle scattering techniquesto porosity characterization in carbons[J].CARBO,2004,42(03):1293. |
| [9] | Pe'rez-Mendoza M et al.Analysis of the microporous texture of a glassy carbon by adsorption measurements and Monte Carlo simulation:Evolution with chemical and physical activation[J].CARBO,2006,44(02):638. |
| [10] | M. Endo;T. Maeda;T. Takeda .Capacitance and Pore-Size Distribution in Aqueous and Nonaqueous Electrolytes Using Various Activated Carbon Electrodes[J].Journal of the Electrochemical Society,2001(8):A910-A914. |
| [11] | Qu D Y .Studies of the activated carbons used in double-layer supercapacitors[J].Journal of Power Sources,2002,109(02):403. |
| [12] | Kim Yongjung et al.Structure features necessary to obtain a high specific capacitance in electric double layer capacitor[J].CARBO,2004,42(06):2423. |
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