物理化学学报2012，Vol.28Issue(6)：1525-1532,8.DOI:10.3866/PKU.WHXB201203271
双峰孔分布薄壁中孔碳的便捷制备
Facile Synthesis of Bimodal Mesoporous Carbon with Thin Pore Walls
摘要
Abstract
Mesoporous carbon materials are required for application in various areas. In our previous work, we successfully prepared mesoporous carbon with thin pore walls using inexpensive y-alumina as a template and sucrose as the carbon source, and proposed a mechanism for the synthetic process. Jn this work, other carbon source was explored to improve the synthetic process and obtain a better understanding of the synthetic mechanism. Compared with sucrose, phenolic resin generated in situ as the carbon precursor can form a complete and robust carbon layer on the template surface in one polymerization and carbonization procedure, simplifying the synthetic process. In addition, the specific surface areas of the carbon materials were greatly increased when phenolic resin was used as the carbon precursor. According to the proposed synthetic mechanism, the mesopores of the carbon materials had two sources: the removal of template particles, and the original pores of the template. When the size of template pores differed significantly from that of the template particles, the obtained carbon materials possessed a bimodal pore size distribution (PSD) at about 4 and 13 nm. In this work, carbon material with a bimodal PSD in the mesopore range was obtained when thin, rod-like alumina was used as the template. The carbon materials possessed ultra large specific surface area (>1800 m2 ·g-1) and pore volume (>4.5 cm3 ·9-1), so they were used as electrodes for electric double-layer capacitors. Cyclic voltammograms were nearly rectangular even at a high sweep rate (50 mV·s-1), and the capacitances were relatively high (about 200 F · g-1). When the current density was increased from 0.1 A·g-1 to 1.0 A·g-1, the decrease in specific capacitance was only 10%.关键词
中孔碳材料/薄壁/可控制备/双峰孔分布/酚醛树脂/电化学电容器Key words
Mesoporous carbon/ Thin pore wall/ Controllable synthesis/ Bimodal pore size distribution/ Phenolic resin/ Electric double-layer capacitor分类
化学化工引用本文复制引用
王羽,董会,耿靓,隗罡,朱月香,谢有畅..双峰孔分布薄壁中孔碳的便捷制备[J].物理化学学报,2012,28(6):1525-1532,8.基金项目
国家自然科学基金(20773004)和国家重点基础研究发展规划项目(973) (2011CB808702)资助 （20773004）
