以碳化后的中间相沥青为前驱体、KOH为活化剂制备了超级电容器用活性炭电极材料,考察了KOH活化温度和碱碳比对所制备的超级电容器用活性炭电极材料的孔隙结构和电化学行为的影响,分析了不同工艺条件下所制备的活性炭电极材料的孔结构和电化学性能的影响因素.结果表明,于800℃活化温度和4∶1碱碳比条件下制备的活性炭电极在1moI/L(C2H5)4NBF4/PC时的最大比电容量可达103.2F/g,活性炭孔结构和比电容量的变化依赖于具体的处理工艺,中孔的含量对活性炭电极的比电容量会产生重要影响.
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] | Kotz R et al.Principle and application of electrochemical capacitors[J].Electrochimica Acta,2000,54(02):2483. |
| [3] | Celzard A;Collas F;Mar(e)chéJ F et al.Porous electrodesbased double-layer supercapacitors:Pore structure versus series resistance[J].Journal of Power Sources,2002,108(1-2):153. |
| [4] | Liang Yanyu;Cao Lin .Synthesis of Co(OH)2/USY composite and its application for electrochemical supercapacitors[J].Journal of Power Sources,2004,136:197. |
| [5] | Hualan Wang;Qingli Hao;Xujie Yang;Lude Lu;Xin Wang .Graphene oxide doped polyaniline for supercapacitors[J].Electrochemistry communications,2009(6):1158-1161. |
| [6] | 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. |
| [7] | Calo J M;Hall P J .The application of small angle scattering techniquesto porosity characterization in carbons[J].CARBO,2004,42:1293. |
| [8] | Pe'rez-Mendoza M;Schumacher C;Sua'rez-GarcI' F .Analysis of the microporous texture of a glassy carbon by adsorption measurements and Monte Carlo simulation:Evolution with chemical and physical activation[J].CARBO,2006,44:638. |
| [9] | 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. |
| [10] | Qu D Y .Studies of the activated carbons used in double-layer supercapacitors[J].Journal of Power Sources,2002,109:403. |
| [11] | Raymundo-Pinero E;Azais P;Cacciaguerra T;Cazorla-Amoros D;Linares-Solano A;Beguin F .KOH and NaOH activation mechanisms of multiwalled carbon nanotubes with different structural organisation[J].Carbon: An International Journal Sponsored by the American Carbon Society,2005(4):786-795. |
| [12] | J.Yamashita;T.Hirano;M.Shioya .Development of mesopores during activation of poly(vinylidene fluoride)-based carbon[J].Carbon: An International Journal Sponsored by the American Carbon Society,2002(9):1541-1548. |
| [13] | Teng HS.;Wang SC. .Preparation of porous carbons from phenol-formaldehyde resins with chemical and physical activation[J].Carbon: An International Journal Sponsored by the American Carbon Society,2000(6):817-824. |
| [14] | Lillo M A;Juan-Juan J;Cazorla-Amorós D et al.About reaction occurring during chemical activation with hydroxides[J].CARBO,2004,42(07):1365. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%