文献类型：期刊文献

英文题名：Metal chloride-assisted synthesis of hierarchical porous carbons for high-rate-performance supercapacitor

作者：Bing, Xuefeng[1];Jiang, Xu[1];Tian, Meng[1];Wang, Jitong[1,3];Qiao, Wenming[1,2];Ling, Licheng[1,2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Specially Funct Polymer Mat & Related Tec, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Natl Engn Res Ctr Ultrafine Powder, Shanghai 200237, Peoples R China

年份：2017

卷号：7

期号：43

起止页码：26650

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20172703893301);WOS:【SCI-EXPANDED(收录号:WOS:000401975700016)】；

基金：This work was financially supported by MOST (2014CB239702), National Natural Science Foundation of China (No. 21506061, 21576090, 51302083, 51272077), Shanghai Municipal Natural Science Foundation (No. 14ZR1410400), Shanghai Rising-Star Program (17QB1401700), Petro China Innovation Foundation and Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Porous materials - Sol-gel process - Supercapacitor - Sol-gels - Zinc chloride - Carbon - Carbonization

摘要：Hierarchical porous carbons with high surface area were prepared by direct carbonization of the polymers which were synthesized via a typical sol-gel method, using terephthalaldehyde and resorcinol as carbon precursors, and metal chloride as reaction assistant. All the metal chlorides could efficiently help to form 3-D porous network carbon with inter-linking irregular particles, and also successfully contribute to the developing of meso-macropores through the packing of grains. Such hierarchical porosity plays an important role for rapid ion diffusion, resulting in an excellent rate capability and low diffusion resistance. Moreover, it should be noted that ZnCl2 could also act as an in situ activation agent during the carbonization process to generate large surface area of 1106 m(2) g(-1) and pore volume of 1.2 cm(3) g(-1). In 3 mol L-1 H2SO4, high specific capacitance of 174.6 F g(-1) by using the ZnCl2-assisted hierarchical porous carbon as electrode material is obtained and it could retain ca. 84% when the current density increases from 0.1 A g(-1) to 20 A g(-1). This superior rate capability is higher than that of many hierarchical porous carbons reported in previous literatures. The facile production and excellent electrochemical performance suggested a low cost and effective method to prepare hierarchical porous carbon for energy storage.