大连理工大学毕业设计（论文）格式规范新型超级电容器——碳化钴/碳复合材料-PAGEII--PAGEII-摘要超级电容器是性能介于电池与传统电容器之间的一种新型储能装置,具有比功率高、循环性能好、可快速充放电等优点,在电动汽车、UPS、航空航天、军事等领域有广阔的应用前景。根据储能原理，电化学超级电容器可以分为双电层电容器和法拉第赝电容器，其电极材料主要有碳材料、金属氧化物和导电聚合物等。在电化学超级电容器的研究中，其电极材料的研究更加引人注目，是因为电极材料是影响超级电容器性能的主要因素。目前，对超级电容器的研究主要集中在对高性能电极材料的制备上。本论文综述了电化学超级电容器及其电极材料的最新研究进展，并制备了复合电极材料,此外本文首先讨论了制备碳化钴/碳复合材料的碳前躯体,羧甲基纤维素比羧甲基纤维素钠更适合的前躯体,而后通过改变制备过程中无水碳酸钾的质量，来改变复合材料的比表面积，进而来改变超级电容器的比容量。以制备的碳化钴/碳复合材料为原料组装超级电容器，在1mol/L的KOH电解液、汞/氧化汞参比电极、以及铂片辅助电极的三电极体系中，采用恒电流充放电、循环伏安(CV)和电化学阻抗谱(EIS)等技术测试其电化学性能。关键词：超级电容器；碳；碳化钴；复合材料新型超级电容器——碳化钴/碳复合材料-PAGEIV-Novelelectrodematerialofsupercapacitor–cobaltcarbide/CcompositesAbstractSupercapacitorsarenewenergystoragedeviceswithintermediateperformancebetweenbatteriesanddielectriccapacitors,whichhavehighpowerdensity,longcycliclifeandshortcharge/dischargecapability,etc.Theyhavemultipleapplicationsincludingautomobiles,UPS,aeronauticsandastronautics,military,etc.Accordingtotheprincipleofenergy-storagetherearetwotypesofcapacitors:electricdouble-layercapacitorandfaradaypseudocapacitor.Generally,theelectrodematerialsofthesuper-capacitormainlyincludecarbonmaterials，metaloxidesandconductivepolymers.Itisconsideredthattheelectrode-materialsaretheimportantpartoftheelectrochemicalsuper-capacitor.Becauseofelectrodematerialsplayacrucialroleinsuper-capacitors.Nowadays，studiesonsupercapacitorsaremainlyfocusedonthepreparationofhighperformanceelectrodematerial.Inthisthesis,wehavereviewedthenewestdevelopmentinresearchofelectrodemate-rialsofelectrochemicalcapacitordevices，andpreparedcompositeelectrodematerials.Inaddition,wealsostudiedtheeffectofcarbonprecursorsusedinthepreparationofcobaltcarbide/carboncomposites.Carboxymethylcelluloseismuchmoresuitablethancarboxymethylcellulose.AcertainamountofK2CO3wasusedtoadjustthespecificareaofthecarboncompositeswiththegoalofobtaininghighcapacitance.Thecobaltcarbide/carboncompositeswasstudiedusingathreeelectrodessystem,inwhich1mol/LKOHwasusedaselectrolyte,HgO/Hgelectrodeastherefe