Synthesis, characterization and capacitive behaviors of nanoporous carbons obtained by using the template of zeolite-13X/MCM-48 biporous molecular sieve
Zeolite-13X/MCM-48 biporous molecular sieve has been synthesized in the mode of overgrowth of MCM-48 on the surface of pre-added zeolite 13X. This kind of biporous molecular sieve has been taken as the template to prepare nanoporous carbons by a two-step casting process with furfuryl alcohol and acetonitrile as the precursors. The structures and textures are characterized by X-ray diffraction, nitrogen sorption at 77 K and high-resolution transmission electron microcopy. The electrochemical performances of the as-prepared porous carbons were tested by cyclic voltammetry and galvanostatic charge-discharge cycling in aqueous electrolyte. One of the carbon samples (labeled as C3-3) which is prepared by adding 5％ zeolite-13X in the MCM-48 sol as the template and conducting acetonitrile chemical vapor deposition for 4 h after the impregnation of furfuryl alcohol. The C3-3 nanoporous carbon keeps the structure ordering and has the capacitance of 197 F g-1 at 2 mV s-1. The cycling performance of this carbon sample is excellent, which can maintain above 90％ capacitance after 1000 cycles at 1 A g-1.
Biporous molecular sieve Porous carbons Electrochemical capacitance Aqueous electrolyte
Huan Xu Qiuming Gao
State Key Laboratory of High Performance Ceramics and Superfine Microstructures, GraduateSchool, Sha State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Graduate School, Sh
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
326-333
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）