|
文献题目：Electrospun nanofiber-supported carbon aerogel as a versatile platform toward asymmetric supercapacitors
作者：Feili Lai, Yunpeng Huang, Lizeng Zuo, Huahao Gu, Yue-E Miao and Tianxi Liu
刊物名称：Journal of Materials Chemistry A
Abstract：As a novel kind of carbon-based material, carbon aerogels have attracted have widespread attention owing to their integrated properties of a large internal surface area, small pore size, and outstanding mechanical strength. In this study, a fascinating carbon aerogel has been rationally designed with a unique cellular structure, consisting of one-dimensional carbon sheets originating form polyimide (PI). The interconnected o-PAN/PI (oPP) carbon aerogel exhibits low density but increased mechanical strength and can not only act as a versatile adsorbent but also as an ideal templater for the in situ growthe of MnO2 nanosheets to obtain oPP@MnO2 hybrid carbon aerogel. The oPP@MnO2 composite aerogel exhibits extraordinary electrochemical characteristics with a maximum specific capacitance of 1066 F/g, approaching the theoretical value(1370 F/g) of MnO2. Moreover, an assembled oPP@MnO2// activated oPP (A-oPP) asymmetric super capacitor delivers a considerably high energy density of up to 30.3 W·h·kg-1, highlighting the advantages of the unique cellular structure of the oPP carbon aerogel and oPP@MnO2 hybrid carbon aerogel. Therefore, the successful fabrication of the oPP carbon aerogel widens the scope of traditional electrospun lamellar membranes to multi-dimensional aerogels, providing a new strategy for the construction of nanofiber-based materials for energy storage and environmental protection applications.
上线时间：21st, Aug. 2016
评论：碳气凝胶作为一种新材料，因为其小孔径尺寸，高比表面积而受到关注。作者采用氧化聚丙烯腈和聚酰亚胺分别得到了一维和二维的碳气凝胶结构。而两者的杂化显示良好的力学性能，并为二氧化锰纳米层提供了良好的生长环境，并进一步得到了二氧化锰掺杂气凝胶。该气凝胶展示了优良的电化学性能，其最大比电容可达到1066 F/g，解禁二氧化锰电容的理论值，而能量密度高到30.3 W·h·kg-1。该气凝胶成功拓展了静电纺丝编织膜在多维气凝胶中的应用，为储能材料的制备提供了新的方法。
作者简介：刘天西，男，东华大学材料科学与工程学院教授，博士生导师。1992年毕业于河南大学化学化工学院，获得化学学士学位。之后在中科院长春应化所攻读高分子化学与物理专业，于1998年获得博士学位。随后又先后在在德国多特蒙德大学，新加坡国立大学进行科研工作。于2004年回国，在复旦大学担任教授，博士生导师至2015年。于2015.3在东华大学任教至今。其主要研究方向有：高分子纳米复合材料；有机-无机纳米杂化材料；通用高分子材料的改性及高性能化、多功能化、低成本化；高分子材料制备/加工-结构/形态-性能和应用；光电功能高分子材料；高性能工程塑料；高分子凝聚态物理等。
|
