Preparation of mesoporous MgO-templated carbons from phenolic resin and their applications for electric double-layer capacitors  

作　　者：LIU WenJie WANG ChengYang WANG JiuZhou JIA Fan ZHENG JiaMing CHEN MingMing 

机构地区：[1]Key Laboratory for Green Chemical Technology of Ministry of Education,School of Chemical Engineering and Technology,Tianjin University

出　　处：《Chinese Science Bulletin》2013年第9期992-997,共6页

基　　金：supported by the Natural Science Foundation of Tianjin City (12JCZDJC27000);the National Natural Science Foundation of China (51172160)

摘　　要：Mesoporous carbons were synthesized using thermoplastic phenolic resin(PF) as carbonaceous precursor and magnesium citrate as template precursor.Pore structure was determined as ink-bottle-like geometry through TEM,N2 adsorption analysis combined with TG curves.The porous carbons prepared were then applied as electrode material for electric double-layer capacitors.The capacitor performance was examined in 30 wt% KOH aqueous solution by cyclic voltammetry and galvanostatic charge/discharge measurements.The carbon prepared with MgO/PF mass ratio of 8/2 had a BET surface area of 1920 m2 g-1 and exhibited a capacitance of 220 F g-1 at a current density of 50 mA g-1.Besides,the carbon with the ratio of 4/6 had the optimize proportion of mesopores,which ensures its good rate performance that up to 98.3%,expressed as the ratio of the capacitance measured at 1000 mA g-1 against that at 50 mA g-1.Mesoporous carbons were synthesized using thermoplastic phenolic resin （PF） as carbonaceous precursor and magnesium citrate as template precursor. Pore structure was determined as ink-bottle-like geometry through TEM, N2 adsorption analysis combined with TG curves. The porous carbons prepared were then applied as electrode material for electric double-layer capacitors. The capacitor performance was examined in 30 wt% KOH aqueous solution by cyclic voltammetry and galvanostatic charge/discharge measurements. The carbon prepared with MgO/PF mass ratio of 8/2 had a BET surface area of 1920 mE g-1 and exhibited a capac- itance of 220 F g-1 at a current density of 50 mA g-l. Besides, the carbon with the ratio of 4/6 had the optimize proportion of mesopores, which ensures its good rate performance that up to 98.3%, expressed as the ratio of the capacitance measured at 1000 mA g-1 against that at 50 mA g-l.

关 键 词：双电层电容器 热塑性酚醛树脂 碳原子 MGO 介孔 模板 透射电子显微镜 应用 

分 类 号：O631.3[理学—高分子化学]