多级孔炭电极材料的制备及其性能研究  

Preparation of porous carbon electrode materials and its electrochemical capacitive performances

作　　者：高旭俊[1] 袁俊生[1,2] 付云朋[1] 张运秋[1] 闫圣娟[1] 

机构地区：[1]中国海洋大学化学化工学院海洋化学理论与工程技术教育部重点实验室,青岛266100 [2]教育部海水资源高效利用技术工程研究中心,天津300130

出　　处：《化工新型材料》2011年第11期93-96,共4页New Chemical Materials

基　　金：天津市应用基础及前沿技术研究计划重点项目(10JCZDJC24000)

摘　　要：以聚醚F127、间苯三酚和甲醛为原料,采用KOH活化法制备出具有介孔、微孔的多级孔炭材料,利用BET、XRD、SEM对样品的组成和结构进行了表征。结果表明:随着升温速率的增加和炭化时间的减少,介孔炭材料的比表面积、孔容以及介孔表面积先增大后减小。10℃/min条件下可获得最优性能的介孔炭,其介孔表面积为324.47m2.g-1,孔容为0.68cm3.g-1,平均孔径为8.44nm。活化剂与介孔炭的比例为4:1时制备出的多级孔炭材料的介孔表面积为682.16m2.g-1,总孔容为0.94cm3.g-1,平均孔径为4.70nm,且孔径主要集中在0～20nm,多级孔炭电极在海水中的比电容最高为242.37F.g-1,显著优于其它类的电极材料。是一种很有应用潜力的电容吸附电极材料。Employing polyether F127, phloroglucin and formaldehyde , a novel micro-meso porous carbon （PC） was prepared by KOH activation approach. The characterizations of samples were carried out by TG-DTA, BET, XRD and SEM. The results showed that the specific surface area, pore volume and mesoporous surface area of mesoporous car- bon（MC） increased at beginning and then decreased with the increase of heating rate and the decrease of carbonization time. When the heating rate was 10~C/min, the largest mesoporous surface area and pore volume of mesoporous carbons can be prepared, which possessed 324.47 m2· g 1 specific surface area and 0. 68 cm2· g-lpore volume and 8. 44nm average pore size. When the ratio of KOH to mesoporous carbon was 4 ： 1, the mesoporous specific surface area reached 682. 16 m2·g-1 and the pore volume of 0.94 cm3· g 1, the average pore size was 4. 70nm and the range of pore sizes mainly was between 0 nm and 20 nm. The capacitance of porous carbon electrodes was up to242.37 F · g-1 at a scan rate of 10 mv·S-1 in seawater, which was superior to other electrode materials. So the porous carbon was a very promising capacitor electrode material.

关 键 词：电容吸附 多级孔炭材料 比表面积 孔容 比电容 

分 类 号：TM242[一般工业技术—材料科学与工程]