【作者】 高凌峰； 蔡杰； 黄亮； 张俐娜；

【Author】 Lingfeng Gao;Jie Cai;Liang Huang;Lina Zhang;College of Chemistry and Molecular Sciences, Wuhan University;Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology;

【机构】 武汉大学化学与分子科学学院； 华中科技大学国家光电实验室；

【摘要】 <正>多孔碳材料具有非常广泛的应用,在吸附,催化,储能等领域的应用上取得了显著的研究成果[1]。在储能材料的应用中,多孔碳及其复合材料正在吸引越来越多研究者的关注,尤其是具有高比表面积的多级孔碳材料[2]。一般来讲,多级孔碳材料的构建通常需要用到二氧化硅等硬模板,以及高温活化碳化等复杂过程[3]。因此,需要寻找一种绿色的,温和的方法构建多级孔碳材料。甲壳素是一类广泛存在于自然界中的高分子材料,极难溶解于普通溶剂(水,有机溶剂,稀酸稀碱)中。壳聚糖是甲壳素脱乙酰化后得到的一类高分子,更多还原

【Abstract】 Recently, nanostructured porous carbons are attracting significant interest in various important applications. However, a green and innovative method to fabricate hierarchically porous structured carbon is still a challenge. In present work,hierarchically porous carbon microspheres(HCM) were prepared by pyrolyzing the chitin microspheres fabricated from chitin/chitosan blend solution, in which chitosan was used as forming agent of nanopores/nanochannels to construct the microspheres.The HCM displayed hierarchical porous structure and improved specific surface area(SSA) of 1450 m~2/g. For the application of HCM in hybrid electrode materials as supercapacitors, polyaniline(PANI) nanoclusters were further deposited on the surface of HCM. Symmetric supercapacitor(SSC) based on HCM-PANI exhibited high-rate capability with a retaining capacitance over 64% as the scan rate increased from 2 to500 mV/s. This work introduced a distinctive and green method to fabricate hierarchically porous carbon materials, having considerable application prospect for energy storage.更多还原