【作者】 李维政； 李冰玉； 高强； 沈明；

【Author】 Weizheng Li;Bingyu Li;Qiang Gao;Ming Shen;College of Chemistry & Chemical Engineering,Yangzhou University;

【机构】 扬州大学化学化工学院；

【摘要】 随着传统化石燃料的日益衰竭,迫使人们开发更加高效、清洁、可持续的能源以及相关的能量转化与存储新技术。双电层超级电容器具有充放电速度快,维护成本低、工作温度范围宽、循环寿命长、比功率密度高等特点,已经逐渐成为人们的研究热点。然而,与传统的锂离子电池相比超级电容器因其较低的能量密度使得其工业化应用受到限制。电极材料作为影响超级电容器性能的一个重要因素,一直以来是这个领域研究的重点。本文以酚醛树脂为碳源,TEOS为无机前驱体,阳离子双子表面活性剂为软模板剂,通过双子表面活性剂乳液作为界面微反应器合成了形貌可控的介孔纳米球,碳化刻蚀去除二氧化硅以后得到具有互联贯通介孔结构的碳纳米球。因其超高的比表面积(1215-1517 m2/g)、超大的孔容(1.12-3.22 cm3/g)、独特的贯穿孔道结构以及高比例N元素掺杂(5.18 at.%),在双电层超级电容器应用中表现出优异的性能。更多还原

【Abstract】 Climate change and the decreasing availability of fossil fuels require society to move towards sustainable and renewable resources and related energy conversion and storage technologies. Compared with the secondary battery, the supercapacitor has the characteristics of fast charge-discharge speed, low maintenance cost, wide operating temperature range, long lifecycle and ultrahigh specific power density, which has aroused extensive attention. However, compared with traditional lithium-ion batteries, supercapacitors are limited in industrial applications due to their low energy density. As a crucial factor affecting the performance of supercapacitors, electrode materials have always been the focus of research in this field. In this study, 3-aminophenol-formaldehyde resin was used as carbon source, tetraethyl orthosilicate(TEOS) was applied as inorganic precursor and Gemini surfactant was used as the soft template. N-doped mesoporous hollow carbon nanospheres(NMHCSs) were successful synthesized by using Gemini surfactant as emulsion interface microreactor. Deriving from the high specific surface area(1215-1517 m2/g), unique throughout channel structure, large pore volume(1.12-3.22 cm3/g) and high proportion of nitrogen element doping(5.18 at.%), the MHCSs exhibit excellent performance in electrical doule-layer supercapacitor(EDLC).更多还原